From 1daded57126ba172eef3664c08829b83a1112cc9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hu=C3=A1ng=20J=C3=B9nli=C3=A0ng?= <jlhwung@gmail.com>
Date: Tue, 17 May 2022 18:02:58 -0400
Subject: [PATCH] Transform destructuring private (#14304)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Co-authored-by: Nicolò Ribaudo <nicolo.ribaudo@gmail.com>
Co-authored-by: Justin Ridgewell <justin@ridgewell.name>
---
 Gulpfile.mjs                                  |   1 +
 .../src/features.ts                           |   2 +-
 packages/babel-helper-define-map/src/index.ts |   6 +-
 .../package.json                              |   2 +-
 .../.npmignore                                |   3 +
 .../README.md                                 |  19 +
 .../package.json                              |  42 ++
 .../src/index.ts                              | 214 ++++++++
 .../src/util.ts                               | 471 ++++++++++++++++++
 .../array-rest-destructuring-middle/exec.js   |  10 +
 .../array-rest-destructuring-middle/input.js  |   7 +
 .../array-rest-destructuring-middle/output.js |  18 +
 .../array-rest-only/exec.js                   |  10 +
 .../array-rest-only/input.js                  |   9 +
 .../array-rest-only/output.js                 |  20 +
 .../assignment--es2015/array-rest/exec.js     |  10 +
 .../assignment--es2015/array-rest/input.js    |   7 +
 .../assignment--es2015/array-rest/output.js   |  14 +
 .../fixtures/assignment--es2015/basic/exec.js |  10 +
 .../assignment--es2015/basic/input.js         |   7 +
 .../assignment--es2015/basic/output.js        |  18 +
 .../completion-do-expression/exec.js          |   9 +
 .../completion-do-expression/input.js         |   8 +
 .../completion-do-expression/options.json     |  10 +
 .../completion-do-expression/output.js        |  15 +
 .../assignment--es2015/completion/exec.js     |  13 +
 .../member-expression/exec.js                 |  11 +
 .../member-expression/input.js                |  10 +
 .../member-expression/output.js               |  23 +
 .../nested-under-array-pattern/exec.js        |  14 +
 .../nested-under-array-pattern/input.js       |  11 +
 .../nested-under-array-pattern/output.js      |  26 +
 .../assignment--es2015/nested/exec.js         |  21 +
 .../assignment--es2015/nested/input.js        |  12 +
 .../assignment--es2015/nested/options.json    |   9 +
 .../assignment--es2015/nested/output.js       |  30 ++
 .../object-rest-and-keys/exec.js              |  16 +
 .../object-rest-and-keys/input.js             |  13 +
 .../object-rest-and-keys/output.js            |  30 ++
 .../object-rest-and-private-keys/exec.js      |  16 +
 .../object-rest-and-private-keys/input.js     |  13 +
 .../object-rest-and-private-keys/output.js    |  27 +
 .../object-rest-under-private/exec.js         |  13 +
 .../object-rest-under-private/input.js        |  12 +
 .../object-rest-under-private/output.js       |  28 ++
 .../assignment--es2015/object-rest/exec.js    |  16 +
 .../assignment--es2015/object-rest/input.js   |  13 +
 .../assignment--es2015/object-rest/output.js  |  33 ++
 .../fixtures/assignment--es2015/options.json  |   9 +
 .../under-param-initializer/exec.js           |  11 +
 .../under-param-initializer/input.js          |  10 +
 .../under-param-initializer/output.js         |  30 ++
 .../array-rest-destructuring-middle/exec.js   |  10 +
 .../array-rest-destructuring-middle/input.js  |   7 +
 .../array-rest-destructuring-middle/output.js |  14 +
 .../assignment/array-rest-only/exec.js        |  10 +
 .../assignment/array-rest-only/input.js       |   9 +
 .../assignment/array-rest-only/output.js      |  16 +
 .../fixtures/assignment/array-rest/exec.js    |  10 +
 .../fixtures/assignment/array-rest/input.js   |   7 +
 .../fixtures/assignment/array-rest/output.js  |  10 +
 .../test/fixtures/assignment/basic/exec.js    |  10 +
 .../test/fixtures/assignment/basic/input.js   |   7 +
 .../test/fixtures/assignment/basic/output.js  |  14 +
 .../completion-do-expression/exec.js          |   9 +
 .../completion-do-expression/input.js         |   8 +
 .../completion-do-expression/options.json     |   4 +
 .../completion-do-expression/output.js        |  11 +
 .../fixtures/assignment/completion/exec.js    |  13 +
 .../assignment/member-expression/exec.js      |  11 +
 .../assignment/member-expression/input.js     |  10 +
 .../assignment/member-expression/output.js    |  13 +
 .../nested-under-array-pattern/exec.js        |  14 +
 .../nested-under-array-pattern/input.js       |  11 +
 .../nested-under-array-pattern/output.js      |  17 +
 .../test/fixtures/assignment/nested/exec.js   |  21 +
 .../test/fixtures/assignment/nested/input.js  |  12 +
 .../test/fixtures/assignment/nested/output.js |  17 +
 .../assignment/object-rest-and-keys/exec.js   |  16 +
 .../assignment/object-rest-and-keys/input.js  |  13 +
 .../assignment/object-rest-and-keys/output.js |  21 +
 .../object-rest-and-private-keys/exec.js      |  16 +
 .../object-rest-and-private-keys/input.js     |  13 +
 .../object-rest-and-private-keys/output.js    |  19 +
 .../object-rest-under-private/exec.js         |  13 +
 .../object-rest-under-private/input.js        |  12 +
 .../object-rest-under-private/output.js       |  22 +
 .../fixtures/assignment/object-rest/exec.js   |  16 +
 .../fixtures/assignment/object-rest/input.js  |  13 +
 .../fixtures/assignment/object-rest/output.js |  26 +
 .../test/fixtures/assignment/options.json     |   4 +
 .../under-param-initializer/exec.js           |  11 +
 .../under-param-initializer/input.js          |  10 +
 .../under-param-initializer/output.js         |  27 +
 .../function-params/input.js                  |   7 +
 .../function-params/output.js                 |  26 +
 .../options.json                              |  12 +
 .../options.json                              |  12 +
 .../variable-declaration/exec.js              |  15 +
 .../variable-declaration/input.js             |  12 +
 .../variable-declaration/output.js            |  36 ++
 .../no-shadowed-params/exec.js                |  10 +
 .../no-shadowed-params/input.js               |   9 +
 .../no-shadowed-params/options.json           |   7 +
 .../no-shadowed-params/output.js              |  23 +
 .../catch-param/no-shadowed-params/exec.js    |  10 +
 .../catch-param/no-shadowed-params/input.js   |   9 +
 .../no-shadowed-params/options.json           |   4 +
 .../catch-param/no-shadowed-params/output.js  |  15 +
 .../for-init--es2015/lhs-with-assign/exec.js  |  12 +
 .../for-init--es2015/lhs-with-assign/input.js |   7 +
 .../lhs-with-assign/output.js                 |  16 +
 .../fixtures/for-init--es2015/lhs/input.js    |   6 +
 .../fixtures/for-init--es2015/lhs/output.js   |  19 +
 .../fixtures/for-init--es2015/options.json    |   7 +
 .../variable-declaration-with-assign/exec.js  |  12 +
 .../variable-declaration-with-assign/input.js |   9 +
 .../output.js                                 |  18 +
 .../variable-declaration/input.js             |   6 +
 .../variable-declaration/output.js            |  12 +
 .../fixtures/for-init/lhs-with-assign/exec.js |  12 +
 .../for-init/lhs-with-assign/input.js         |   7 +
 .../for-init/lhs-with-assign/output.js        |  13 +
 .../test/fixtures/for-init/lhs/input.js       |   6 +
 .../test/fixtures/for-init/lhs/output.js      |  11 +
 .../test/fixtures/for-init/options.json       |   4 +
 .../variable-declaration-with-assign/exec.js  |  12 +
 .../variable-declaration-with-assign/input.js |   9 +
 .../output.js                                 |  14 +
 .../for-init/variable-declaration/input.js    |   6 +
 .../for-init/variable-declaration/output.js   |   9 +
 .../lhs-with-shadowed-block-scoped/exec.js    |  10 +
 .../lhs-with-shadowed-block-scoped/input.js   |  10 +
 .../lhs-with-shadowed-block-scoped/output.js  |  21 +
 .../test/fixtures/for-of--es2015/lhs/input.js |   6 +
 .../fixtures/for-of--es2015/lhs/output.js     |  18 +
 .../test/fixtures/for-of--es2015/options.json |   7 +
 .../variable-declaration-block-scoped/exec.js |  10 +
 .../input.js                                  |  10 +
 .../output.js                                 |  21 +
 .../variable-declaration/input.js             |   6 +
 .../variable-declaration/output.js            |  18 +
 .../lhs-with-shadowed-block-scoped/exec.js    |  10 +
 .../lhs-with-shadowed-block-scoped/input.js   |  10 +
 .../lhs-with-shadowed-block-scoped/output.js  |  18 +
 .../test/fixtures/for-of/lhs/input.js         |   6 +
 .../test/fixtures/for-of/lhs/output.js        |  10 +
 .../test/fixtures/for-of/options.json         |   4 +
 .../variable-declaration-block-scoped/exec.js |  10 +
 .../input.js                                  |  10 +
 .../output.js                                 |  18 +
 .../for-of/variable-declaration/input.js      |   6 +
 .../for-of/variable-declaration/output.js     |  10 +
 .../function-length/exec.js                   |  11 +
 .../function-length/input.js                  |   7 +
 .../function-length/output.js                 |  26 +
 .../no-shadowed-params/input.js               |   5 +
 .../no-shadowed-params/output.js              |  17 +
 .../function-params--es2015/options.json      |   7 +
 .../shadowed-params/input.js                  |   6 +
 .../shadowed-params/output.js                 |  20 +
 .../function-params/function-length/exec.js   |  11 +
 .../function-params/function-length/input.js  |   7 +
 .../function-params/function-length/output.js |  23 +
 .../no-shadowed-params/input.js               |   5 +
 .../no-shadowed-params/output.js              |  10 +
 .../fixtures/function-params/options.json     |   4 +
 .../function-params/shadowed-params/input.js  |   6 +
 .../function-params/shadowed-params/output.js |  13 +
 .../array-pattern-with-rest/exec.js           |  26 +
 .../ordering--es2015/array-pattern/exec.js    |  22 +
 .../object-pattern-with-rest/exec.js          |  23 +
 .../ordering--es2015/object-pattern/exec.js   |  22 +
 .../fixtures/ordering--es2015/options.json    |   9 +
 .../exec.js                                   |  29 ++
 .../ordering/array-pattern-with-rest/exec.js  |  26 +
 .../fixtures/ordering/array-pattern/exec.js   |  22 +
 .../ordering/object-pattern-with-rest/exec.js |  23 +
 .../fixtures/ordering/object-pattern/exec.js  |  22 +
 .../test/fixtures/ordering/options.json       |   4 +
 .../.valid-preset-typescript/input.ts         |   4 +
 .../.valid-preset-typescript/options.json     |   4 +
 .../.valid-preset-typescript/output.js        |  10 +
 .../input.ts                                  |   4 +
 .../options.json                              |   6 +
 .../input.ts                                  |   4 +
 .../options.json                              |   3 +
 .../output.js                                 |   9 +
 .../array-rest-only/exec.js                   |   9 +
 .../array-rest-only/input.js                  |   8 +
 .../array-rest-only/output.js                 |  21 +
 .../array-rest/exec.js                        |   9 +
 .../array-rest/input.js                       |   6 +
 .../array-rest/output.js                      |  13 +
 .../basic/exec.js                             |   9 +
 .../basic/input.js                            |   6 +
 .../basic/output.js                           |  17 +
 .../nested-under-array-pattern/exec.js        |  13 +
 .../nested-under-array-pattern/input.js       |  10 +
 .../nested-under-array-pattern/output.js      |  28 ++
 .../nested/exec.js                            |  21 +
 .../nested/input.js                           |  12 +
 .../nested/options.json                       |   9 +
 .../nested/output.js                          |  37 ++
 .../non-identifier-keys/input.js              |   6 +
 .../non-identifier-keys/options.json          |   4 +
 .../non-identifier-keys/output.js             |  10 +
 .../object-rest-and-keys/exec.js              |  15 +
 .../object-rest-and-keys/input.js             |  12 +
 .../object-rest-and-keys/output.js            |  26 +
 .../object-rest-and-private-keys/exec.js      |  15 +
 .../object-rest-and-private-keys/input.js     |  12 +
 .../object-rest-and-private-keys/output.js    |  26 +
 .../object-rest-under-private/exec.js         |  12 +
 .../object-rest-under-private/input.js        |  11 +
 .../object-rest-under-private/output.js       |  29 ++
 .../object-rest/exec.js                       |  15 +
 .../object-rest/input.js                      |  12 +
 .../object-rest/options.json                  |   8 +
 .../object-rest/output.js                     |  36 ++
 .../variable-declaration--es2015/options.json |   9 +
 .../array-rest-only/exec.js                   |   9 +
 .../array-rest-only/input.js                  |   8 +
 .../array-rest-only/output.js                 |  16 +
 .../variable-declaration/array-rest/exec.js   |   9 +
 .../variable-declaration/array-rest/input.js  |   6 +
 .../variable-declaration/array-rest/output.js |   9 +
 .../variable-declaration/basic/exec.js        |   9 +
 .../variable-declaration/basic/input.js       |   6 +
 .../variable-declaration/basic/output.js      |  13 +
 .../nested-under-array-pattern/exec.js        |  13 +
 .../nested-under-array-pattern/input.js       |  10 +
 .../nested-under-array-pattern/output.js      |  19 +
 .../variable-declaration/nested/exec.js       |  21 +
 .../variable-declaration/nested/input.js      |  12 +
 .../variable-declaration/nested/output.js     |  25 +
 .../non-identifier-keys/input.js              |   6 +
 .../non-identifier-keys/options.json          |   4 +
 .../non-identifier-keys/output.js             |  10 +
 .../object-rest-and-keys/exec.js              |  15 +
 .../object-rest-and-keys/input.js             |  12 +
 .../object-rest-and-keys/output.js            |  21 +
 .../object-rest-and-private-keys/exec.js      |  15 +
 .../object-rest-and-private-keys/input.js     |  12 +
 .../object-rest-and-private-keys/output.js    |  20 +
 .../object-rest-under-private/exec.js         |  12 +
 .../object-rest-under-private/input.js        |  11 +
 .../object-rest-under-private/output.js       |  22 +
 .../variable-declaration/object-rest/exec.js  |  15 +
 .../variable-declaration/object-rest/input.js |  12 +
 .../object-rest/output.js                     |  29 ++
 .../variable-declaration/options.json         |   4 +
 .../test/index.js                             |   3 +
 .../test/package.json                         |   1 +
 .../test/plugin-ordering.js                   |  28 ++
 .../test/util.skip-bundled.js                 |  77 +++
 .../src/index.ts                              |   4 +-
 .../package.json                              |  18 +-
 .../src/index.ts                              |  25 +-
 .../src/util.ts                               |  36 +-
 .../input.js                                  |   2 +
 .../output.js                                 |   2 +
 .../for-of-shadowed-block-scoped/exec.js      |   8 +
 .../for-of-shadowed-block-scoped/input.js     |   8 +
 .../for-of-shadowed-block-scoped/options.json |   3 +
 .../for-of-shadowed-block-scoped/output.js    |  20 +
 .../src/index.ts                              |   1 -
 .../src/index.ts                              |  58 +--
 .../parameter-properties-with-class/output.js |  12 +-
 packages/babel-standalone/package.json        |   1 +
 .../scripts/pluginConfig.json                 |   1 +
 .../babel-standalone/src/generated/plugins.ts |   3 +
 .../babel-standalone/src/preset-stage-2.ts    |   2 +-
 .../test/preset-stage-1.test.js               |  14 +
 .../babel-traverse/src/path/introspection.ts  |  10 +-
 packages/babel-traverse/src/scope/index.ts    |  21 +-
 packages/babel-traverse/test/scope.js         |  25 +
 .../src/ast-types/generated/index.ts          |   9 +-
 .../src/builders/generated/index.ts           |   9 +-
 .../src/converters/toComputedKey.ts           |   2 +-
 packages/babel-types/src/definitions/core.ts  |   6 +
 tsconfig.json                                 |   4 +
 yarn.lock                                     |  18 +
 283 files changed, 4338 insertions(+), 76 deletions(-)
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/.npmignore
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/README.md
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/package.json
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/src/index.ts
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/src/util.ts
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/options.json
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/options.json
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-under-private/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-under-private/input.js
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 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/options.json
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/output.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/exec.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/input.js
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/options.json
 create mode 100644 packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/output.js
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diff --git a/Gulpfile.mjs b/Gulpfile.mjs
index 51681902950c..169cfe9719e9 100644
--- a/Gulpfile.mjs
+++ b/Gulpfile.mjs
@@ -459,6 +459,7 @@ function copyDts(packages) {
 
 const libBundles = [
   "packages/babel-parser",
+  "packages/babel-plugin-proposal-destructuring-private",
   "packages/babel-plugin-proposal-object-rest-spread",
   "packages/babel-plugin-proposal-optional-chaining",
   "packages/babel-preset-react",
diff --git a/packages/babel-helper-create-class-features-plugin/src/features.ts b/packages/babel-helper-create-class-features-plugin/src/features.ts
index a895190c6645..a749d8b1b1c0 100644
--- a/packages/babel-helper-create-class-features-plugin/src/features.ts
+++ b/packages/babel-helper-create-class-features-plugin/src/features.ts
@@ -181,7 +181,7 @@ export function shouldTransform(path: NodePath<t.Class>, file: File): boolean {
   if (privateMethodPath && !hasFeature(file, FEATURES.privateMethods)) {
     throw privateMethodPath.buildCodeFrameError(
       "Class private methods are not enabled. " +
-        "Please add `@babel/plugin-proposal-private-method` to your configuration.",
+        "Please add `@babel/plugin-proposal-private-methods` to your configuration.",
     );
   }
 
diff --git a/packages/babel-helper-define-map/src/index.ts b/packages/babel-helper-define-map/src/index.ts
index 591cd78193f6..0653c7991744 100644
--- a/packages/babel-helper-define-map/src/index.ts
+++ b/packages/babel-helper-define-map/src/index.ts
@@ -121,7 +121,11 @@ export function toComputedObjectFromClass(obj: any) {
     const prop = obj.properties[i];
     const val = prop.value;
     val.properties.unshift(
-      objectProperty(identifier("key"), toComputedKey(prop)),
+      objectProperty(
+        identifier("key"),
+        // @ts-expect-error toComputedObjectFromClass is not used, maybe we can remove it
+        toComputedKey(prop),
+      ),
     );
     objExpr.elements.push(val);
   }
diff --git a/packages/babel-plugin-proposal-class-static-block/package.json b/packages/babel-plugin-proposal-class-static-block/package.json
index 3eabbc73bf72..e1d008c8fd01 100644
--- a/packages/babel-plugin-proposal-class-static-block/package.json
+++ b/packages/babel-plugin-proposal-class-static-block/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@babel/plugin-proposal-class-static-block",
   "version": "7.17.12",
-  "description": "Allow parsing of class static blocks",
+  "description": "Transform class static blocks",
   "repository": {
     "type": "git",
     "url": "https://github.com/babel/babel.git",
diff --git a/packages/babel-plugin-proposal-destructuring-private/.npmignore b/packages/babel-plugin-proposal-destructuring-private/.npmignore
new file mode 100644
index 000000000000..f9806945836e
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/.npmignore
@@ -0,0 +1,3 @@
+src
+test
+*.log
diff --git a/packages/babel-plugin-proposal-destructuring-private/README.md b/packages/babel-plugin-proposal-destructuring-private/README.md
new file mode 100644
index 000000000000..eeca2d9af0b2
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/README.md
@@ -0,0 +1,19 @@
+# @babel/plugin-proposal-destructuring-private
+
+> Transform destructuring private proposal
+
+See our website [@babel/plugin-proposal-destructuring-private](https://babeljs.io/docs/en/babel-plugin-proposal-destructuring-private) for more information.
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/plugin-proposal-destructuring-private
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/plugin-proposal-destructuring-private --dev
+```
diff --git a/packages/babel-plugin-proposal-destructuring-private/package.json b/packages/babel-plugin-proposal-destructuring-private/package.json
new file mode 100644
index 000000000000..2da4b4c798bb
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/package.json
@@ -0,0 +1,42 @@
+{
+  "name": "@babel/plugin-proposal-destructuring-private",
+  "version": "0.0.0",
+  "description": "Transform destructuring private proposal",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/babel/babel.git",
+    "directory": "packages/babel-plugin-proposal-destructuring-private"
+  },
+  "license": "MIT",
+  "publishConfig": {
+    "access": "public"
+  },
+  "main": "./lib/index.js",
+  "keywords": [
+    "babel-plugin"
+  ],
+  "dependencies": {
+    "@babel/helper-plugin-utils": "workspace:^",
+    "@babel/plugin-syntax-destructuring-private": "workspace:^",
+    "@babel/plugin-transform-destructuring": "workspace:^",
+    "@babel/plugin-transform-parameters": "workspace:^"
+  },
+  "peerDependencies": {
+    "@babel/core": "^7.17.0"
+  },
+  "devDependencies": {
+    "@babel/core": "workspace:^",
+    "@babel/helper-plugin-test-runner": "workspace:^",
+    "@babel/traverse": "workspace:^",
+    "@babel/types": "workspace:^"
+  },
+  "homepage": "https://babel.dev/docs/en/next/babel-plugin-proposal-destructuring-private",
+  "engines": {
+    "node": ">=6.9.0"
+  },
+  "author": "The Babel Team (https://babel.dev/team)",
+  "exports": {
+    ".": "./lib/index.js",
+    "./package.json": "./package.json"
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/src/index.ts b/packages/babel-plugin-proposal-destructuring-private/src/index.ts
new file mode 100644
index 000000000000..f210f5146e52
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/src/index.ts
@@ -0,0 +1,214 @@
+import { declare } from "@babel/helper-plugin-utils";
+import syntaxDestructuringPrivate from "@babel/plugin-syntax-destructuring-private";
+import {
+  hasPrivateKeys,
+  hasPrivateClassElement,
+  transformPrivateKeyDestructuring,
+  buildVariableDeclarationFromParams,
+} from "./util";
+import { convertFunctionParams } from "@babel/plugin-transform-parameters";
+import { unshiftForXStatementBody } from "@babel/plugin-transform-destructuring";
+
+import type { PluginPass } from "@babel/core";
+import type { Visitor } from "@babel/traverse";
+
+export default declare(function ({ assertVersion, assumption, types: t }) {
+  assertVersion("^7.17.0");
+  const {
+    assignmentExpression,
+    assignmentPattern,
+    cloneNode,
+    expressionStatement,
+    isExpressionStatement,
+    isIdentifier,
+    isSequenceExpression,
+    sequenceExpression,
+    variableDeclaration,
+    variableDeclarator,
+  } = t;
+
+  const ignoreFunctionLength = assumption("ignoreFunctionLength");
+  const objectRestNoSymbols = assumption("objectRestNoSymbols");
+
+  const privateKeyDestructuringVisitor: Visitor<PluginPass> = {
+    Function(path) {
+      // (b, { #x: x } = I) => body
+      // transforms to:
+      // (b, p1) => { var { #x: x } = p1 === undefined ? I : p1; body; }
+      const firstPrivateIndex = path.node.params.findIndex(param =>
+        hasPrivateKeys(param),
+      );
+      if (firstPrivateIndex === -1) return;
+      // wrap function body within IIFE if any param is shadowed
+      convertFunctionParams(path, ignoreFunctionLength, () => false, false);
+      // invariant: path.body is always a BlockStatement after `convertFunctionParams`
+      const { node, scope } = path;
+      const { params } = node;
+      const firstAssignmentPatternIndex = ignoreFunctionLength
+        ? -1
+        : params.findIndex(param => param.type === "AssignmentPattern");
+      const paramsAfterIndex = params.splice(firstPrivateIndex);
+      const { params: transformedParams, variableDeclaration } =
+        buildVariableDeclarationFromParams(paramsAfterIndex, scope);
+
+      path.get("body").unshiftContainer("body", variableDeclaration);
+      params.push(...transformedParams);
+      // preserve function.length
+      // (b, p1) => {}
+      // transforms to
+      // (b, p1 = void 0) => {}
+      if (firstAssignmentPatternIndex >= firstPrivateIndex) {
+        params[firstAssignmentPatternIndex] = assignmentPattern(
+          // @ts-ignore The transformed assignment pattern must not be a RestElement
+          params[firstAssignmentPatternIndex],
+          scope.buildUndefinedNode(),
+        );
+      }
+      scope.crawl();
+      // the pattern will be handled by VariableDeclaration visitor.
+    },
+    CatchClause(path) {
+      // catch({ #x: x }) { body }
+      // transforms to:
+      // catch(_e) { var {#x: x } = _e; body }
+      const { node, scope } = path;
+      if (!hasPrivateKeys(node.param)) return;
+      // todo: handle shadowed param as we did in convertFunctionParams
+      const ref = scope.generateUidIdentifier("e");
+      path
+        .get("body")
+        .unshiftContainer(
+          "body",
+          variableDeclaration("let", [variableDeclarator(node.param, ref)]),
+        );
+      node.param = cloneNode(ref);
+      scope.crawl();
+      // the pattern will be handled by VariableDeclaration visitor.
+    },
+    ForXStatement(path) {
+      const { node, scope } = path;
+      const leftPath = path.get("left");
+      if (leftPath.isVariableDeclaration()) {
+        const left = leftPath.node;
+        if (!hasPrivateKeys(left.declarations[0].id)) return;
+        // for (const { #x: x } of cls) body;
+        // transforms to:
+        // for (const ref of cls) { const { #x: x } = ref; body; }
+        // todo: the transform here assumes that any expression within
+        // the destructuring pattern (`{ #x: x }`), when evluated, do not interfere
+        // with the iterator of cls. Otherwise we have to pause the iterator and
+        // interleave the expressions.
+        // See also https://gist.github.com/nicolo-ribaudo/f8ac7916f89450f2ead77d99855b2098
+        const temp = scope.generateUidIdentifier("ref");
+        node.left = variableDeclaration(left.kind, [
+          variableDeclarator(temp, null),
+        ]);
+        left.declarations[0].init = cloneNode(temp);
+        unshiftForXStatementBody(path, [left]);
+        scope.crawl();
+        // the pattern will be handled by VariableDeclaration visitor.
+      } else if (leftPath.isPattern()) {
+        if (!hasPrivateKeys(leftPath.node)) return;
+        // for ({ #x: x } of cls);
+        // transforms to:
+        // for (const ref of cls) { ({ #x: x } = ref); body; }
+        // This transform assumes that any expression within the pattern
+        // does not interfere with the iterable `cls`.
+        const temp = scope.generateUidIdentifier("ref");
+        node.left = variableDeclaration("const", [
+          variableDeclarator(temp, null),
+        ]);
+        const assignExpr = expressionStatement(
+          assignmentExpression("=", leftPath.node, cloneNode(temp)),
+        );
+        unshiftForXStatementBody(path, [assignExpr]);
+        scope.crawl();
+      }
+    },
+    VariableDeclaration(path, state) {
+      const { scope, node } = path;
+      const { declarations } = node;
+      if (!declarations.some(declarator => hasPrivateKeys(declarator.id))) {
+        return;
+      }
+      const newDeclarations = [];
+      for (const declarator of declarations) {
+        for (const { left, right } of transformPrivateKeyDestructuring(
+          // @ts-expect-error The id of a variable declarator must not be a RestElement
+          declarator.id,
+          declarator.init,
+          scope,
+          /* isAssignment */ false,
+          /* shouldPreserveCompletion */ false,
+          name => state.addHelper(name),
+          objectRestNoSymbols,
+          /* useBuiltIns */ true,
+        )) {
+          newDeclarations.push(variableDeclarator(left, right));
+        }
+      }
+      node.declarations = newDeclarations;
+      scope.crawl();
+    },
+
+    AssignmentExpression(path, state) {
+      const { node, scope, parent } = path;
+      if (!hasPrivateKeys(node.left)) return;
+      const assignments = [];
+      const shouldPreserveCompletion =
+        (!isExpressionStatement(parent) && !isSequenceExpression(parent)) ||
+        path.isCompletionRecord();
+      for (const { left, right } of transformPrivateKeyDestructuring(
+        // @ts-expect-error The left of an assignment expression must not be a RestElement
+        node.left,
+        node.right,
+        scope,
+        /* isAssignment */ true,
+        shouldPreserveCompletion,
+        name => state.addHelper(name),
+        objectRestNoSymbols,
+        /* useBuiltIns */ true,
+      )) {
+        assignments.push(assignmentExpression("=", left, right));
+      }
+      // preserve completion record
+      if (shouldPreserveCompletion) {
+        const { left, right } = assignments[0];
+        // If node.right is right and left is an identifier, then the left is an effectively-constant memoised id
+        if (isIdentifier(left) && right === node.right) {
+          if (
+            !isIdentifier(assignments[assignments.length - 1].right, {
+              name: left.name,
+            })
+          ) {
+            // If the last assignment does not end with left, then we push `left` as the completion value
+            assignments.push(cloneNode(left));
+          }
+          // do nothing as `left` is already at the end of assignments
+        } else {
+          const tempId = scope.generateDeclaredUidIdentifier("m");
+          assignments.unshift(
+            assignmentExpression("=", tempId, cloneNode(node.right)),
+          );
+          assignments.push(cloneNode(tempId));
+        }
+      }
+
+      path.replaceWith(sequenceExpression(assignments));
+      scope.crawl();
+    },
+  };
+
+  const visitor: Visitor<PluginPass> = {
+    Class(path, state) {
+      if (!hasPrivateClassElement(path.node.body)) return;
+      path.traverse(privateKeyDestructuringVisitor, state);
+    },
+  };
+
+  return {
+    name: "proposal-destructuring-private",
+    inherits: syntaxDestructuringPrivate,
+    visitor: visitor,
+  };
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/src/util.ts b/packages/babel-plugin-proposal-destructuring-private/src/util.ts
new file mode 100644
index 000000000000..66ffbba18b53
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/src/util.ts
@@ -0,0 +1,471 @@
+import type * as t from "@babel/types";
+import type { Scope } from "@babel/traverse";
+import { types } from "@babel/core";
+import type { File } from "@babel/core";
+import { buildObjectExcludingKeys } from "@babel/plugin-transform-destructuring";
+const {
+  assignmentExpression,
+  binaryExpression,
+  conditionalExpression,
+  cloneNode,
+  isObjectProperty,
+  isPrivateName,
+  memberExpression,
+  numericLiteral,
+  objectPattern,
+  restElement,
+  variableDeclarator,
+  variableDeclaration,
+  unaryExpression,
+} = types;
+
+function buildUndefinedNode() {
+  return unaryExpression("void", numericLiteral(0));
+}
+
+function transformAssignmentPattern(
+  initializer: t.Expression,
+  tempId: t.Identifier,
+) {
+  return conditionalExpression(
+    binaryExpression("===", cloneNode(tempId), buildUndefinedNode()),
+    initializer,
+    cloneNode(tempId),
+  );
+}
+
+function initRestExcludingKeys(pattern: t.LVal): ExcludingKey[] | null {
+  if (pattern.type === "ObjectPattern") {
+    const { properties } = pattern;
+    if (properties[properties.length - 1].type === "RestElement") {
+      return [];
+    }
+  }
+  return null;
+}
+
+/**
+ * grow `excludingKeys` from given properties. This routine mutates properties by
+ * memoising the computed non-static keys.
+ *
+ * @param {ExcludingKey[]} excludingKeys
+ * @param {t.ObjectProperty[]} properties An array of object properties that should be excluded by rest element transform
+ * @param {Scope} scope Where should we register the memoised id
+ */
+function growRestExcludingKeys(
+  excludingKeys: ExcludingKey[],
+  properties: t.ObjectProperty[],
+  scope: Scope,
+) {
+  if (excludingKeys === null) return;
+  for (const property of properties) {
+    const propertyKey = property.key;
+    if (property.computed && !scope.isStatic(propertyKey)) {
+      const tempId = scope.generateDeclaredUidIdentifier("m");
+      // @ts-expect-error A computed property key must not be a private name
+      property.key = assignmentExpression("=", tempId, propertyKey);
+      excludingKeys.push({ key: tempId, computed: true });
+    } else if (propertyKey.type !== "PrivateName") {
+      excludingKeys.push(property);
+    }
+  }
+}
+
+/**
+ * Prepare var declarations for params. Only param initializers
+ * will be transformed to undefined coalescing, other features are preserved.
+ * This function does NOT mutate given AST structures.
+ *
+ * @export
+ * @param {Function["params"]} params An array of function params
+ * @param {Scope} scope A scope used to generate uid for function params
+ * @returns {{ params: Identifier[]; variableDeclaration: VariableDeclaration }} An array of new id for params
+ * and variable declaration to be prepended to the function body
+ */
+export function buildVariableDeclarationFromParams(
+  params: t.Function["params"],
+  scope: Scope,
+): {
+  params: (t.Identifier | t.RestElement)[];
+  variableDeclaration: t.VariableDeclaration;
+} {
+  const { elements, transformed } = buildAssignmentsFromPatternList(
+    params,
+    scope,
+    /* isAssignment */ false,
+  );
+  return {
+    params: elements,
+    variableDeclaration: variableDeclaration(
+      "var",
+      transformed.map(({ left, right }) => variableDeclarator(left, right)),
+    ),
+  };
+}
+
+interface Transformed {
+  left: Exclude<LHS, t.AssignmentPattern>;
+  right: t.Expression;
+}
+
+function buildAssignmentsFromPatternList(
+  elements: (t.LVal | null)[],
+  scope: Scope,
+  isAssignment: boolean,
+): {
+  elements: (t.Identifier | t.RestElement | null)[];
+  transformed: Transformed[];
+} {
+  const newElements: (t.Identifier | t.RestElement)[] = [],
+    transformed = [];
+  for (let element of elements) {
+    if (element === null) {
+      newElements.push(null);
+      transformed.push(null);
+      continue;
+    }
+    const tempId = scope.generateUidIdentifier("p");
+    if (isAssignment) {
+      scope.push({ id: cloneNode(tempId) });
+    }
+    if (element.type === "RestElement") {
+      newElements.push(restElement(tempId));
+      // The argument of a RestElement within a BindingPattern must be either Identifier or BindingPattern
+      element = element.argument as t.Identifier | t.Pattern;
+    } else {
+      newElements.push(tempId);
+    }
+    if (element.type === "AssignmentPattern") {
+      transformed.push({
+        left: element.left,
+        right: transformAssignmentPattern(element.right, tempId),
+      });
+    } else {
+      transformed.push({
+        left: element,
+        right: cloneNode(tempId),
+      });
+    }
+  }
+  return { elements: newElements, transformed };
+}
+
+/**
+ * A DFS simplified pattern traverser. It skips computed property keys and assignment pattern
+ * initializers. The following nodes will be delegated to the visitor:
+ * - ArrayPattern
+ * - ArrayPattern elements
+ * - AssignmentPattern
+ * - ObjectPattern
+ * - ObjectProperty
+ * - RestElement
+ * @param root
+ * @param visitor
+ */
+export function* traversePattern(
+  root: t.LVal,
+  visitor: (
+    node: t.LVal | t.ObjectProperty,
+    index: number,
+    depth: number,
+  ) => Generator<any, void, any>,
+) {
+  const stack = [];
+  stack.push({ node: root, index: 0, depth: 0 });
+  let item: {
+    node: t.LVal | t.ObjectProperty | null;
+    index: number;
+    depth: number;
+  };
+  while ((item = stack.pop()) !== undefined) {
+    const { node, index } = item;
+    if (node === null) continue;
+    yield* visitor(node, index, item.depth);
+    const depth = item.depth + 1;
+    switch (node.type) {
+      case "AssignmentPattern":
+        stack.push({ node: node.left, index: 0, depth });
+        break;
+      case "ObjectProperty":
+        // inherit the depth and index as an object property can not be an LHS without object pattern
+        stack.push({ node: node.value, index, depth: item.depth });
+        break;
+      case "RestElement":
+        stack.push({ node: node.argument, index: 0, depth });
+        break;
+      case "ObjectPattern":
+        for (let list = node.properties, i = list.length - 1; i >= 0; i--) {
+          stack.push({ node: list[i], index: i, depth });
+        }
+        break;
+      case "ArrayPattern":
+        for (let list = node.elements, i = list.length - 1; i >= 0; i--) {
+          stack.push({ node: list[i], index: i, depth });
+        }
+        break;
+      case "TSParameterProperty":
+      case "TSAsExpression":
+      case "TSTypeAssertion":
+      case "TSNonNullExpression":
+        throw new Error(
+          `TypeScript features must first be transformed by ` +
+            `@babel/plugin-transform-typescript.\n` +
+            `If you have already enabled that plugin (or '@babel/preset-typescript'), make sure ` +
+            `that it runs before @babel/plugin-proposal-destructuring-private.`,
+        );
+      default:
+        break;
+    }
+  }
+}
+
+export function hasPrivateKeys(pattern: t.LVal) {
+  let result = false;
+  traversePattern(pattern, function* (node) {
+    if (isObjectProperty(node) && isPrivateName(node.key)) {
+      result = true;
+      // stop the traversal
+      yield;
+    }
+  }).next();
+  return result;
+}
+
+export function hasPrivateClassElement(node: t.ClassBody): boolean {
+  return node.body.some(element =>
+    isPrivateName(
+      // @ts-expect-error: for those class element without `key`, they must
+      // not be a private element
+      element.key,
+    ),
+  );
+}
+
+/**
+ * Traverse the given pattern and report the private key path.
+ * A private key path is analagous to an array of `key` from the pattern NodePath
+ * to the private key NodePath. See also test/util.skip-bundled.js for an example output
+ *
+ * @export
+ * @param {t.LVal} pattern
+ */
+export function* privateKeyPathIterator(pattern: t.LVal) {
+  const indexPath = [];
+  yield* traversePattern(pattern, function* (node, index, depth) {
+    indexPath[depth] = index;
+    if (isObjectProperty(node) && isPrivateName(node.key)) {
+      // The indexPath[0, depth] contains the path from root pattern to the object property
+      // with private key. The indexPath may have more than depth + 1 elements because we
+      // don't shrink the indexPath when the traverser returns to parent nodes.
+      yield indexPath.slice(1, depth + 1);
+    }
+  });
+}
+
+type LHS = Exclude<t.LVal, t.RestElement | t.TSParameterProperty>;
+
+type ExcludingKey = {
+  key: t.ObjectProperty["key"];
+  computed: t.ObjectProperty["computed"];
+};
+type Item = {
+  left: LHS;
+  right: t.Expression;
+  restExcludingKeys?: ExcludingKey[] | null;
+};
+
+function rightWillBeReferencedOnce(left: LHS) {
+  switch (left.type) {
+    // Skip memoising the right when left is an identifier or
+    // an array pattern
+    case "Identifier":
+    case "ArrayPattern":
+      return true;
+    case "ObjectPattern":
+      return left.properties.length === 1;
+    default:
+      return false;
+  }
+}
+/**
+ * Transform private destructuring. It returns a generator
+ * which yields a pair of transformed LHS and RHS, which can form VariableDeclaration or
+ * AssignmentExpression later.
+ *
+ * @export
+ * @param {LHS} left The root pattern
+ * @param {t.Expression} right The initializer or the RHS of pattern
+ * @param {Scope} scope The scope where memoized id should be registered
+ * @param {boolean} isAssignment Whether we are transforming from an AssignmengExpression of VariableDeclaration
+ * @returns {Generator<Transformed, void, void>}
+ */
+export function* transformPrivateKeyDestructuring(
+  left: LHS,
+  right: t.Expression,
+  scope: Scope,
+  isAssignment: boolean,
+  shouldPreserveCompletion: boolean,
+  addHelper: File["addHelper"],
+  objectRestNoSymbols: boolean,
+  useBuiltIns: boolean,
+): Generator<Transformed, void, void> {
+  const stack: Item[] = [];
+  const rootRight = right;
+  // The stack holds patterns that we don't known whether they contain private key
+  stack.push({
+    left,
+    right,
+    restExcludingKeys: initRestExcludingKeys(left),
+  });
+  let item: Item;
+  while ((item = stack.pop()) !== undefined) {
+    const { restExcludingKeys } = item;
+    let { left, right } = item;
+    const searchPrivateKey = privateKeyPathIterator(left).next();
+    if (searchPrivateKey.done) {
+      if (restExcludingKeys?.length > 0) {
+        // optimize out the rest element because `objectWithoutProperties`
+        // returns a new object
+        // `{ ...z } = babelHelpers.objectWithoutProperties(m, ["x"])`
+        // to
+        // `z = babelHelpers.objectWithoutProperties(m, ["x"])`
+        const { properties } = left as t.ObjectPattern;
+        if (properties.length === 1) {
+          // The argument of an object rest element must be an Identifier
+          left = (properties[0] as t.RestElement).argument as t.Identifier;
+        }
+        yield {
+          left: left as t.ObjectPattern,
+          right: buildObjectExcludingKeys(
+            restExcludingKeys,
+            right,
+            scope,
+            addHelper,
+            objectRestNoSymbols,
+            useBuiltIns,
+          ),
+        };
+      } else {
+        yield {
+          left:
+            // An assignment pattern will not be pushed to the stack
+            left as Transformed["left"],
+          right,
+        };
+      }
+    } else {
+      // now we need to split according to the indexPath;
+      const indexPath = searchPrivateKey.value;
+      for (
+        let indexPathIndex = 0, index;
+        (indexPathIndex < indexPath.length &&
+          (index = indexPath[indexPathIndex]) !== undefined) ||
+        left.type === "AssignmentPattern";
+        indexPathIndex++
+      ) {
+        const isRightSafeToReuse =
+          // If we should preserve completion and the right is the rootRight, then the
+          // right is NOT safe to reuse because we will insert a new memoising statement
+          // in the AssignmentExpression visitor, which causes right to be referenced more
+          // than once
+          !(shouldPreserveCompletion && right === rootRight) &&
+          (rightWillBeReferencedOnce(left) || scope.isStatic(right));
+        if (!isRightSafeToReuse) {
+          const tempId = scope.generateUidIdentifier("m");
+          if (isAssignment) {
+            scope.push({ id: cloneNode(tempId) });
+          }
+          yield { left: tempId, right };
+          right = cloneNode(tempId);
+        }
+        // invariant: at this point right must be a static identifier;
+        switch (left.type) {
+          case "ObjectPattern": {
+            const { properties } = left;
+            if (index > 0) {
+              // properties[0, index) must not contain private keys
+              const propertiesSlice = properties.slice(0, index);
+              yield {
+                left: objectPattern(propertiesSlice),
+                right: cloneNode(right),
+              };
+            }
+            if (index < properties.length - 1) {
+              // for properties after `index`, push them to stack so we can process them later
+              // inherit the restExcludingKeys on the stack if we are at
+              // the first level, otherwise initialize a new restExcludingKeys
+              const nextRestExcludingKeys =
+                indexPathIndex === 0
+                  ? restExcludingKeys
+                  : initRestExcludingKeys(left);
+              growRestExcludingKeys(
+                nextRestExcludingKeys,
+                // @ts-expect-error properties[0, index] must not contain rest element
+                // because properties[index] contains a private key
+                properties.slice(0, index + 1),
+                scope,
+              );
+              stack.push({
+                left: objectPattern(properties.slice(index + 1)),
+                right: cloneNode(right),
+                restExcludingKeys: nextRestExcludingKeys,
+              });
+            }
+            // An object rest element must not contain a private key
+            const property = properties[index] as t.ObjectProperty;
+            // The value of ObjectProperty under ObjectPattern must be an LHS
+            left = property.value as LHS;
+            const { key } = property;
+            const computed =
+              property.computed ||
+              // `{ 0: x } = RHS` is transformed to a computed member expression `x = RHS[0]`
+              (key.type !== "Identifier" && key.type !== "PrivateName");
+            right = memberExpression(right, key, computed);
+            break;
+          }
+          case "AssignmentPattern": {
+            right = transformAssignmentPattern(
+              left.right,
+              right as t.Identifier,
+            );
+            left = left.left;
+            break;
+          }
+          case "ArrayPattern": {
+            // todo: the transform here assumes that any expression within
+            // the array pattern, when evluated, do not interfere with the iterable
+            // in RHS. Otherwise we have to pause the iterable and interleave
+            // the expressions.
+            // See also https://gist.github.com/nicolo-ribaudo/f8ac7916f89450f2ead77d99855b2098
+            // and ordering/array-pattern-side-effect-iterable test
+            const leftElements = left.elements;
+            const leftElementsAfterIndex = leftElements.splice(index);
+            const { elements, transformed } = buildAssignmentsFromPatternList(
+              leftElementsAfterIndex,
+              scope,
+              isAssignment,
+            );
+            leftElements.push(...elements);
+            yield { left, right: cloneNode(right) };
+            // for elements after `index`, push them to stack so we can process them later
+            for (let i = transformed.length - 1; i > 0; i--) {
+              // skipping array holes
+              if (transformed[i] !== null) {
+                stack.push(transformed[i]);
+              }
+            }
+            ({ left, right } = transformed[0]);
+            break;
+          }
+          default:
+            break;
+        }
+      }
+      stack.push({
+        left,
+        right,
+        restExcludingKeys: initRestExcludingKeys(left),
+      });
+    }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/exec.js
new file mode 100644
index 000000000000..6d1e6de5d111
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/exec.js
@@ -0,0 +1,10 @@
+let x, y, z;
+class C {
+  static #x;
+  static {
+    ([{ y }, { #x: x = y }, ...z] = [{ y: 1}, C]);
+  }
+}
+
+expect(x).toBe(1);
+expect(z).toStrictEqual([]);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/input.js
new file mode 100644
index 000000000000..70615f84cae2
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/input.js
@@ -0,0 +1,7 @@
+let x, y, z;
+class C {
+  static #x;
+  static {
+    ([{ y }, { #x: x = y }, ...z] = [{ y: 1}, C]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/output.js
new file mode 100644
index 000000000000..15f6b3310491
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-destructuring-middle/output.js
@@ -0,0 +1,18 @@
+let x, y, z;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  var _p, _p2, _m;
+
+  [{
+    y
+  }, _p, ..._p2] = [{
+    y: 1
+  }, C], _m = babelHelpers.classStaticPrivateFieldSpecGet(_p, C, _x), x = _m === void 0 ? y : _m, z = _p2;
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/exec.js
new file mode 100644
index 000000000000..3748bab5a407
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/exec.js
@@ -0,0 +1,10 @@
+let result;
+class C {
+  static #x;
+  static {
+    var x, z;
+    [...{ 0: { #x: x = 1 }, ...z }] = [C];
+    result = { x, z };
+  }
+}
+expect(result).toStrictEqual({ x: 1, z: {} });
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/input.js
new file mode 100644
index 000000000000..7f14fc9c787a
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/input.js
@@ -0,0 +1,9 @@
+let result;
+class C {
+  static #x;
+  static {
+    var x, z;
+    [...{ 0: { #x: x = 1 }, ...z }] = [C];
+    result = { x, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/output.js
new file mode 100644
index 000000000000..2691e38a1b03
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest-only/output.js
@@ -0,0 +1,20 @@
+const _excluded = ["0"];
+let result;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  var _p, _m;
+
+  var x, z;
+  [..._p] = [C], _m = babelHelpers.classStaticPrivateFieldSpecGet(_p[0], C, _x), x = _m === void 0 ? 1 : _m, z = babelHelpers.objectWithoutProperties(_p, _excluded);
+  result = {
+    x,
+    z
+  };
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/exec.js
new file mode 100644
index 000000000000..54c0347d10e9
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/exec.js
@@ -0,0 +1,10 @@
+let x, z;
+class C {
+  static #x;
+  static {
+    ([{ #x: x = 1 }, ...z] = [C]);
+  }
+}
+
+expect(x).toBe(1);
+expect(z).toStrictEqual([]);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/input.js
new file mode 100644
index 000000000000..fc244ab5af80
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/input.js
@@ -0,0 +1,7 @@
+let x, z;
+class C {
+  static #x;
+  static {
+    ([{ #x: x = 1 }, ...z] = [C]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/output.js
new file mode 100644
index 000000000000..837199e34665
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/array-rest/output.js
@@ -0,0 +1,14 @@
+let x, z;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  var _p, _p2, _m;
+
+  [_p, ..._p2] = [C], _m = babelHelpers.classStaticPrivateFieldSpecGet(_p, C, _x), x = _m === void 0 ? 1 : _m, z = _p2;
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/exec.js
new file mode 100644
index 000000000000..b0c00d030344
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/exec.js
@@ -0,0 +1,10 @@
+let a, x, b;
+class C {
+  static #x;
+  static {
+    ({ a = 1, #x: x = 2, b = 3 } = C);
+  }
+}
+expect(a).toBe(1);
+expect(x).toBe(2);
+expect(b).toBe(3);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/input.js
new file mode 100644
index 000000000000..16d994cde245
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/input.js
@@ -0,0 +1,7 @@
+let a, x, b;
+class C {
+  static #x;
+  static {
+    ({ a = 1, #x: x = 2, b = 3 } = C);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/output.js
new file mode 100644
index 000000000000..42e29778c281
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/basic/output.js
@@ -0,0 +1,18 @@
+let a, x, b;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  var _m;
+
+  ({
+    a = 1
+  } = C), _m = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x), x = _m === void 0 ? 2 : _m, ({
+    b = 3
+  } = C);
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/exec.js
new file mode 100644
index 000000000000..4e8130dbed03
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/exec.js
@@ -0,0 +1,9 @@
+var result;
+class C {
+  static #x;
+  static {
+    var x;
+    result = do { ({#x: x = 2} = C); }
+  }
+}
+expect(result).toBe(C);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/input.js
new file mode 100644
index 000000000000..a929a603b588
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/input.js
@@ -0,0 +1,8 @@
+var result;
+class C {
+  static #x;
+  static {
+    var x;
+    result = do { ({#x: x = 2} = C); }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/options.json
new file mode 100644
index 000000000000..637f74481731
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/options.json
@@ -0,0 +1,10 @@
+{
+  "plugins": [
+    "proposal-do-expressions",
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties",
+    "proposal-private-methods",
+    ["proposal-object-rest-spread", { "useBuiltIns": true }]
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/output.js
new file mode 100644
index 000000000000..6820a344d940
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion-do-expression/output.js
@@ -0,0 +1,15 @@
+var result;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  var _m, _m2;
+
+  var x;
+  result = (_m = C, _m2 = babelHelpers.classStaticPrivateFieldSpecGet(_m, C, _x), x = _m2 === void 0 ? 2 : _m2, _m);
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion/exec.js
new file mode 100644
index 000000000000..f56e05c08f33
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/completion/exec.js
@@ -0,0 +1,13 @@
+let r1, r2, r3;
+class C {
+  static #x = { b: 2 };
+  static {
+    let a, b;
+    r1 = ({ a = 1, #x: { b }} = C);
+    (function f(r = ({ #x: { b }} = C)) { r2 = r })();
+    ((g = (r = ({ #x: { a } } = { #x: { b }} = C)) => { r3 = r }) => g())();
+  }
+}
+expect(r1).toBe(C);
+expect(r2).toBe(C);
+expect(r3).toBe(C);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/exec.js
new file mode 100644
index 000000000000..3c865df1a3e8
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/exec.js
@@ -0,0 +1,11 @@
+let x;
+class C {
+  static #x;
+  static #y;
+  static #z;
+  static {
+    let z;
+    ([C.#x, { #x: x }, ...z] = [0, C]);
+  }
+}
+expect(x).toBe(0);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/input.js
new file mode 100644
index 000000000000..45be876183ce
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/input.js
@@ -0,0 +1,10 @@
+let x;
+class C {
+  static #x;
+  static #y;
+  static #z;
+  static {
+    let z;
+    ([C.#x, { #x: x }, ...z] = [0, C]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/output.js
new file mode 100644
index 000000000000..37753eaca23e
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/member-expression/output.js
@@ -0,0 +1,23 @@
+let x;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
+var _y = {
+  writable: true,
+  value: void 0
+};
+var _z = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  var _p, _p2;
+
+  let z;
+  [babelHelpers.classStaticPrivateFieldDestructureSet(C, C, _x).value, _p, ..._p2] = [0, C], x = babelHelpers.classStaticPrivateFieldSpecGet(_p, C, _x), z = _p2;
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/exec.js
new file mode 100644
index 000000000000..686556b8466b
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/exec.js
@@ -0,0 +1,14 @@
+class C {
+  static #x = "x";
+  static #y = [];
+  static #z;
+  static self = C;
+  static #self() { return C }
+  static {
+    let x, y, z;
+    [{ #x: x } = C.self, { #y: [,{ #z: y = C.#self() } = C.self ] },,z = y.#y] = [this,this];
+    expect(x).toBe("x");
+    expect(y).toBe(C);
+    expect(z).toStrictEqual([]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/input.js
new file mode 100644
index 000000000000..5ca915829bdb
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/input.js
@@ -0,0 +1,11 @@
+class C {
+  static #x = "x";
+  static #y = [];
+  static #z;
+  static self = C;
+  static #self() { return C }
+  static {
+    let x, y, z;
+    [{ #x: x } = C.self, { #y: [,{ #z: y = C.#self() } = C.self ] },,z = y.#y] = [this,this];
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/output.js
new file mode 100644
index 000000000000..3454fb0bf7dd
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested-under-array-pattern/output.js
@@ -0,0 +1,26 @@
+class C {}
+
+function _self() {
+  return C;
+}
+
+var _x = {
+  writable: true,
+  value: "x"
+};
+var _y = {
+  writable: true,
+  value: []
+};
+var _z = {
+  writable: true,
+  value: void 0
+};
+babelHelpers.defineProperty(C, "self", C);
+
+(() => {
+  var _p, _p2, _p3, _p4, _m;
+
+  let x, y, z;
+  [_p, _p2,, _p3] = [C, C], x = babelHelpers.classStaticPrivateFieldSpecGet(_p === void 0 ? C.self : _p, C, _x), [, _p4] = babelHelpers.classStaticPrivateFieldSpecGet(_p2, C, _y), _m = babelHelpers.classStaticPrivateFieldSpecGet(_p4 === void 0 ? C.self : _p4, C, _z), y = _m === void 0 ? babelHelpers.classStaticPrivateMethodGet(C, C, _self).call(C) : _m, z = _p3 === void 0 ? babelHelpers.classStaticPrivateFieldSpecGet(y, C, _y) : _p3;
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/exec.js
new file mode 100644
index 000000000000..c59766b8f366
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/exec.js
@@ -0,0 +1,21 @@
+let result;
+class C {
+  static #y = "y";
+  static #z = "self";
+  static #x;
+  static b = "b";
+  static self = C;
+  static #self = C;
+  static {
+    let cloned, b, y, yy, yy2;
+    ({ #x: { [C.#z]: { b, #x: y = (C.b = "bb", C.#self.#y) }, #x: yy = (delete C.self, { ...cloned } = C, C.#y = "yy") } = C.#self, #y: yy2 } = C);
+    result = { b, y, yy, cloned, yy2 };
+  }
+}
+expect(result).toStrictEqual({
+  b: "b",
+  y: "y",
+  yy: "yy",
+  cloned: { b: "bb" },
+  yy2: "yy"
+})
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/input.js
new file mode 100644
index 000000000000..890f16f203bd
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/input.js
@@ -0,0 +1,12 @@
+class C {
+  static #y = "y";
+  static #z = "self";
+  static #x;
+  static b = "b";
+  static self = C;
+  static #self = C;
+  static {
+    let cloned, b, y, yy, yy2;
+    ({ #x: { [C.#z]: { b, #x: y = (C.b = "bb", C.#self.#y) }, #x: yy = (delete C.self, { ...cloned } = C, C.#y = "yy") } = C.#self, #y: yy2 } = C);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/options.json
new file mode 100644
index 000000000000..48eb48aad7d6
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/options.json
@@ -0,0 +1,9 @@
+{
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties",
+    "proposal-private-methods"
+  ],
+  "minNodeVersion": "8.0.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/output.js
new file mode 100644
index 000000000000..d207099e0f1f
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/nested/output.js
@@ -0,0 +1,30 @@
+class C {}
+
+var _y = {
+  writable: true,
+  value: "y"
+};
+var _z = {
+  writable: true,
+  value: "self"
+};
+var _x = {
+  writable: true,
+  value: void 0
+};
+babelHelpers.defineProperty(C, "b", "b");
+babelHelpers.defineProperty(C, "self", C);
+var _self = {
+  writable: true,
+  value: C
+};
+
+(() => {
+  var _m, _m2, _m3, _m4, _m5;
+
+  let cloned, b, y, yy, yy2;
+  _m = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x), _m2 = _m === void 0 ? babelHelpers.classStaticPrivateFieldSpecGet(C, C, _self) : _m, _m3 = _m2[babelHelpers.classStaticPrivateFieldSpecGet(C, C, _z)], ({
+    b
+  } = _m3), _m4 = babelHelpers.classStaticPrivateFieldSpecGet(_m3, C, _x), y = _m4 === void 0 ? (C.b = "bb", babelHelpers.classStaticPrivateFieldSpecGet(babelHelpers.classStaticPrivateFieldSpecGet(C, C, _self), C, _y)) : _m4, _m5 = babelHelpers.classStaticPrivateFieldSpecGet(_m2, C, _x), yy = _m5 === void 0 ? (delete C.self, ({ ...cloned
+  } = C), babelHelpers.classStaticPrivateFieldSpecSet(C, C, _y, "yy")) : _m5, yy2 = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _y);
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/exec.js
new file mode 100644
index 000000000000..63e834ef0af0
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/exec.js
@@ -0,0 +1,16 @@
+let result;
+class C {
+  static #x = "#x";
+  static y = "y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    let x, y, z;
+    ({ #x: x, y, ...z } = C);
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  x: "#x", y: "y", z: { a: "a", b: "b", c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/input.js
new file mode 100644
index 000000000000..f1a251c17ecb
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/input.js
@@ -0,0 +1,13 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    let x, y, z;
+    ({ #x: x, y, ...z } = C);
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/output.js
new file mode 100644
index 000000000000..096518eaab16
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-keys/output.js
@@ -0,0 +1,30 @@
+const _excluded = ["y"];
+let result;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: "#x"
+};
+var _y = {
+  writable: true,
+  value: "y"
+};
+babelHelpers.defineProperty(C, "a", "a");
+babelHelpers.defineProperty(C, "b", "b");
+babelHelpers.defineProperty(C, "c", "c");
+
+(() => {
+  var _C;
+
+  let x, y, z;
+  x = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x), (_C = C, ({
+    y
+  } = _C), z = babelHelpers.objectWithoutProperties(_C, _excluded), _C);
+  result = {
+    x,
+    y,
+    z
+  };
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/exec.js
new file mode 100644
index 000000000000..fcfcf3bafcd5
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/exec.js
@@ -0,0 +1,16 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    let x, y, z;
+    ({ #x: x, #y: y, ...z } = C);
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  x: "#x", y: "#y", z: { a: "a", b: "b", c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/input.js
new file mode 100644
index 000000000000..f29b28b5a652
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/input.js
@@ -0,0 +1,13 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    let x, y, z;
+    ({ #x: x, #y: y, ...z } = C);
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/output.js
new file mode 100644
index 000000000000..d13cce9b234b
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-and-private-keys/output.js
@@ -0,0 +1,27 @@
+let result;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: "#x"
+};
+var _y = {
+  writable: true,
+  value: "#y"
+};
+babelHelpers.defineProperty(C, "a", "a");
+babelHelpers.defineProperty(C, "b", "b");
+babelHelpers.defineProperty(C, "c", "c");
+
+(() => {
+  var _C;
+
+  let x, y, z;
+  x = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x), y = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _y), (_C = C, ({} = _C), z = Object.assign({}, _C), _C);
+  result = {
+    x,
+    y,
+    z
+  };
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-under-private/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-under-private/exec.js
new file mode 100644
index 000000000000..6dff97a97aff
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-under-private/exec.js
@@ -0,0 +1,13 @@
+let result;
+class C {
+  static x = "x";
+  static y = "y";
+  static z = "z";
+  static #x = C;
+  static {
+    var x, y, z;
+    ({ x, #x: { y, ...z } } = C);
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({ x: "x", y: "y", z: { x: "x", z: "z" } })
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-under-private/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-under-private/input.js
new file mode 100644
index 000000000000..d67ebdde0914
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-under-private/input.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static x = "x";
+  static y = "y";
+  static z = "z";
+  static #x = C;
+  static {
+    var x, y, z;
+    ({ x, #x: { y, ...z } } = C);
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-under-private/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-under-private/output.js
new file mode 100644
index 000000000000..3ada6df296df
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest-under-private/output.js
@@ -0,0 +1,28 @@
+const _excluded = ["y"];
+let result;
+
+class C {}
+
+babelHelpers.defineProperty(C, "x", "x");
+babelHelpers.defineProperty(C, "y", "y");
+babelHelpers.defineProperty(C, "z", "z");
+var _x = {
+  writable: true,
+  value: C
+};
+
+(() => {
+  var _babelHelpers$classSt;
+
+  var x, y, z;
+  ({
+    x
+  } = C), (_babelHelpers$classSt = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x), ({
+    y
+  } = _babelHelpers$classSt), z = babelHelpers.objectWithoutProperties(_babelHelpers$classSt, _excluded), _babelHelpers$classSt);
+  result = {
+    x,
+    y,
+    z
+  };
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/exec.js
new file mode 100644
index 000000000000..f03d0735bead
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/exec.js
@@ -0,0 +1,16 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var a, b, x, y, z;
+    ({ [C.a]: a, #x: x, [C.b]: b, #y: y, ...z } = C);
+    result = { a, b, x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  a: "a", b: "b", x: "#x", y: "#y", z: { c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/input.js
new file mode 100644
index 000000000000..231b2f804345
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/input.js
@@ -0,0 +1,13 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var a, b, x, y, z;
+    ({ [C.a]: a, #x: x, [C.b]: b, #y: y, ...z } = C);
+    result = { a, b, x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/output.js
new file mode 100644
index 000000000000..eab489f2dde1
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/object-rest/output.js
@@ -0,0 +1,33 @@
+let result;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: "#x"
+};
+var _y = {
+  writable: true,
+  value: "#y"
+};
+babelHelpers.defineProperty(C, "a", "a");
+babelHelpers.defineProperty(C, "b", "b");
+babelHelpers.defineProperty(C, "c", "c");
+
+(() => {
+  var _m, _m2;
+
+  var a, b, x, y, z;
+  ({
+    [_m = C.a]: a
+  } = C), x = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x), ({
+    [_m2 = C.b]: b
+  } = C), y = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _y), z = babelHelpers.objectWithoutProperties(C, [_m, _m2].map(babelHelpers.toPropertyKey));
+  result = {
+    a,
+    b,
+    x,
+    y,
+    z
+  };
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/options.json
new file mode 100644
index 000000000000..e1c5858604ed
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/options.json
@@ -0,0 +1,9 @@
+{
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties",
+    "proposal-private-methods",
+    ["proposal-object-rest-spread", { "useBuiltIns": true }]
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/exec.js
new file mode 100644
index 000000000000..387b1623a8f9
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/exec.js
@@ -0,0 +1,11 @@
+let a,b;
+class C {
+  static #x = { a: 1, b: 2 };
+  static {
+    (function f(r = { #x: { b }} = C) {})()
+  }
+  static m(r = { #x: { a } } = C) {}
+}
+C.m();
+expect(a).toBe(1);
+expect(b).toBe(2);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/input.js
new file mode 100644
index 000000000000..cd50bcd759bf
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/input.js
@@ -0,0 +1,10 @@
+let a;
+class C {
+  static #x = { a: 1, b: 2 };
+  static {
+    let b;
+    (function f(r = { #x: { b }} = C) {})()
+  }
+  static m(r = { #x: { a } } = C) {}
+}
+C.m();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/output.js
new file mode 100644
index 000000000000..d0f627623477
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment--es2015/under-param-initializer/output.js
@@ -0,0 +1,30 @@
+var _m2;
+
+let a;
+
+class C {
+  static m(r = (_m2 = C, ({
+    a
+  } = babelHelpers.classStaticPrivateFieldSpecGet(_m2, C, _x)), _m2)) {}
+
+}
+
+var _x = {
+  writable: true,
+  value: {
+    a: 1,
+    b: 2
+  }
+};
+
+(() => {
+  var _m;
+
+  let b;
+
+  (function f(r = (_m = C, ({
+    b
+  } = babelHelpers.classStaticPrivateFieldSpecGet(_m, C, _x)), _m)) {})();
+})();
+
+C.m();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/exec.js
new file mode 100644
index 000000000000..6d1e6de5d111
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/exec.js
@@ -0,0 +1,10 @@
+let x, y, z;
+class C {
+  static #x;
+  static {
+    ([{ y }, { #x: x = y }, ...z] = [{ y: 1}, C]);
+  }
+}
+
+expect(x).toBe(1);
+expect(z).toStrictEqual([]);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/input.js
new file mode 100644
index 000000000000..70615f84cae2
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/input.js
@@ -0,0 +1,7 @@
+let x, y, z;
+class C {
+  static #x;
+  static {
+    ([{ y }, { #x: x = y }, ...z] = [{ y: 1}, C]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/output.js
new file mode 100644
index 000000000000..a95547193b0d
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-destructuring-middle/output.js
@@ -0,0 +1,14 @@
+let x, y, z;
+
+class C {
+  static #x;
+  static {
+    var _p, _p2, _m;
+
+    [{
+      y
+    }, _p, ..._p2] = [{
+      y: 1
+    }, C], _m = _p.#x, x = _m === void 0 ? y : _m, z = _p2;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/exec.js
new file mode 100644
index 000000000000..3748bab5a407
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/exec.js
@@ -0,0 +1,10 @@
+let result;
+class C {
+  static #x;
+  static {
+    var x, z;
+    [...{ 0: { #x: x = 1 }, ...z }] = [C];
+    result = { x, z };
+  }
+}
+expect(result).toStrictEqual({ x: 1, z: {} });
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/input.js
new file mode 100644
index 000000000000..7f14fc9c787a
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/input.js
@@ -0,0 +1,9 @@
+let result;
+class C {
+  static #x;
+  static {
+    var x, z;
+    [...{ 0: { #x: x = 1 }, ...z }] = [C];
+    result = { x, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/output.js
new file mode 100644
index 000000000000..9eae325d1e7e
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest-only/output.js
@@ -0,0 +1,16 @@
+const _excluded = ["0"];
+let result;
+
+class C {
+  static #x;
+  static {
+    var _p, _m;
+
+    var x, z;
+    [..._p] = [C], _m = _p[0].#x, x = _m === void 0 ? 1 : _m, z = babelHelpers.objectWithoutProperties(_p, _excluded);
+    result = {
+      x,
+      z
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/exec.js
new file mode 100644
index 000000000000..54c0347d10e9
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/exec.js
@@ -0,0 +1,10 @@
+let x, z;
+class C {
+  static #x;
+  static {
+    ([{ #x: x = 1 }, ...z] = [C]);
+  }
+}
+
+expect(x).toBe(1);
+expect(z).toStrictEqual([]);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/input.js
new file mode 100644
index 000000000000..fc244ab5af80
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/input.js
@@ -0,0 +1,7 @@
+let x, z;
+class C {
+  static #x;
+  static {
+    ([{ #x: x = 1 }, ...z] = [C]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/output.js
new file mode 100644
index 000000000000..50156224c564
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/array-rest/output.js
@@ -0,0 +1,10 @@
+let x, z;
+
+class C {
+  static #x;
+  static {
+    var _p, _p2, _m;
+
+    [_p, ..._p2] = [C], _m = _p.#x, x = _m === void 0 ? 1 : _m, z = _p2;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/exec.js
new file mode 100644
index 000000000000..b0c00d030344
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/exec.js
@@ -0,0 +1,10 @@
+let a, x, b;
+class C {
+  static #x;
+  static {
+    ({ a = 1, #x: x = 2, b = 3 } = C);
+  }
+}
+expect(a).toBe(1);
+expect(x).toBe(2);
+expect(b).toBe(3);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/input.js
new file mode 100644
index 000000000000..16d994cde245
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/input.js
@@ -0,0 +1,7 @@
+let a, x, b;
+class C {
+  static #x;
+  static {
+    ({ a = 1, #x: x = 2, b = 3 } = C);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/output.js
new file mode 100644
index 000000000000..9e2c02707338
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/basic/output.js
@@ -0,0 +1,14 @@
+let a, x, b;
+
+class C {
+  static #x;
+  static {
+    var _m;
+
+    ({
+      a = 1
+    } = C), _m = C.#x, x = _m === void 0 ? 2 : _m, ({
+      b = 3
+    } = C);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/exec.js
new file mode 100644
index 000000000000..4e8130dbed03
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/exec.js
@@ -0,0 +1,9 @@
+var result;
+class C {
+  static #x;
+  static {
+    var x;
+    result = do { ({#x: x = 2} = C); }
+  }
+}
+expect(result).toBe(C);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/input.js
new file mode 100644
index 000000000000..a929a603b588
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/input.js
@@ -0,0 +1,8 @@
+var result;
+class C {
+  static #x;
+  static {
+    var x;
+    result = do { ({#x: x = 2} = C); }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/options.json
new file mode 100644
index 000000000000..fd0b65b50e67
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["proposal-do-expressions", "proposal-destructuring-private"],
+  "minNodeVersion": "16.11.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/output.js
new file mode 100644
index 000000000000..d32ee58d5442
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion-do-expression/output.js
@@ -0,0 +1,11 @@
+var result;
+
+class C {
+  static #x;
+  static {
+    var _m, _m2;
+
+    var x;
+    result = (_m = C, _m2 = _m.#x, x = _m2 === void 0 ? 2 : _m2, _m);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion/exec.js
new file mode 100644
index 000000000000..f56e05c08f33
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/completion/exec.js
@@ -0,0 +1,13 @@
+let r1, r2, r3;
+class C {
+  static #x = { b: 2 };
+  static {
+    let a, b;
+    r1 = ({ a = 1, #x: { b }} = C);
+    (function f(r = ({ #x: { b }} = C)) { r2 = r })();
+    ((g = (r = ({ #x: { a } } = { #x: { b }} = C)) => { r3 = r }) => g())();
+  }
+}
+expect(r1).toBe(C);
+expect(r2).toBe(C);
+expect(r3).toBe(C);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/member-expression/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/member-expression/exec.js
new file mode 100644
index 000000000000..3c865df1a3e8
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/member-expression/exec.js
@@ -0,0 +1,11 @@
+let x;
+class C {
+  static #x;
+  static #y;
+  static #z;
+  static {
+    let z;
+    ([C.#x, { #x: x }, ...z] = [0, C]);
+  }
+}
+expect(x).toBe(0);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/member-expression/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/member-expression/input.js
new file mode 100644
index 000000000000..45be876183ce
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/member-expression/input.js
@@ -0,0 +1,10 @@
+let x;
+class C {
+  static #x;
+  static #y;
+  static #z;
+  static {
+    let z;
+    ([C.#x, { #x: x }, ...z] = [0, C]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/member-expression/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/member-expression/output.js
new file mode 100644
index 000000000000..738a12d73cae
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/member-expression/output.js
@@ -0,0 +1,13 @@
+let x;
+
+class C {
+  static #x;
+  static #y;
+  static #z;
+  static {
+    var _p, _p2;
+
+    let z;
+    [C.#x, _p, ..._p2] = [0, C], x = _p.#x, z = _p2;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested-under-array-pattern/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested-under-array-pattern/exec.js
new file mode 100644
index 000000000000..686556b8466b
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested-under-array-pattern/exec.js
@@ -0,0 +1,14 @@
+class C {
+  static #x = "x";
+  static #y = [];
+  static #z;
+  static self = C;
+  static #self() { return C }
+  static {
+    let x, y, z;
+    [{ #x: x } = C.self, { #y: [,{ #z: y = C.#self() } = C.self ] },,z = y.#y] = [this,this];
+    expect(x).toBe("x");
+    expect(y).toBe(C);
+    expect(z).toStrictEqual([]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested-under-array-pattern/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested-under-array-pattern/input.js
new file mode 100644
index 000000000000..5ca915829bdb
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested-under-array-pattern/input.js
@@ -0,0 +1,11 @@
+class C {
+  static #x = "x";
+  static #y = [];
+  static #z;
+  static self = C;
+  static #self() { return C }
+  static {
+    let x, y, z;
+    [{ #x: x } = C.self, { #y: [,{ #z: y = C.#self() } = C.self ] },,z = y.#y] = [this,this];
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested-under-array-pattern/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested-under-array-pattern/output.js
new file mode 100644
index 000000000000..3d9e614af2a0
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested-under-array-pattern/output.js
@@ -0,0 +1,17 @@
+class C {
+  static #x = "x";
+  static #y = [];
+  static #z;
+  static self = C;
+
+  static #self() {
+    return C;
+  }
+
+  static {
+    var _p, _p2, _p3, _p4, _m;
+
+    let x, y, z;
+    [_p, _p2,, _p3] = [this, this], x = (_p === void 0 ? C.self : _p).#x, [, _p4] = _p2.#y, _m = (_p4 === void 0 ? C.self : _p4).#z, y = _m === void 0 ? C.#self() : _m, z = _p3 === void 0 ? y.#y : _p3;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested/exec.js
new file mode 100644
index 000000000000..c59766b8f366
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested/exec.js
@@ -0,0 +1,21 @@
+let result;
+class C {
+  static #y = "y";
+  static #z = "self";
+  static #x;
+  static b = "b";
+  static self = C;
+  static #self = C;
+  static {
+    let cloned, b, y, yy, yy2;
+    ({ #x: { [C.#z]: { b, #x: y = (C.b = "bb", C.#self.#y) }, #x: yy = (delete C.self, { ...cloned } = C, C.#y = "yy") } = C.#self, #y: yy2 } = C);
+    result = { b, y, yy, cloned, yy2 };
+  }
+}
+expect(result).toStrictEqual({
+  b: "b",
+  y: "y",
+  yy: "yy",
+  cloned: { b: "bb" },
+  yy2: "yy"
+})
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested/input.js
new file mode 100644
index 000000000000..890f16f203bd
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested/input.js
@@ -0,0 +1,12 @@
+class C {
+  static #y = "y";
+  static #z = "self";
+  static #x;
+  static b = "b";
+  static self = C;
+  static #self = C;
+  static {
+    let cloned, b, y, yy, yy2;
+    ({ #x: { [C.#z]: { b, #x: y = (C.b = "bb", C.#self.#y) }, #x: yy = (delete C.self, { ...cloned } = C, C.#y = "yy") } = C.#self, #y: yy2 } = C);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested/output.js
new file mode 100644
index 000000000000..6ddd0084d98b
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/nested/output.js
@@ -0,0 +1,17 @@
+class C {
+  static #y = "y";
+  static #z = "self";
+  static #x;
+  static b = "b";
+  static self = C;
+  static #self = C;
+  static {
+    var _m, _m2, _m3, _m4, _m5;
+
+    let cloned, b, y, yy, yy2;
+    _m = C.#x, _m2 = _m === void 0 ? C.#self : _m, _m3 = _m2[C.#z], ({
+      b
+    } = _m3), _m4 = _m3.#x, y = _m4 === void 0 ? (C.b = "bb", C.#self.#y) : _m4, _m5 = _m2.#x, yy = _m5 === void 0 ? (delete C.self, ({ ...cloned
+    } = C), C.#y = "yy") : _m5, yy2 = C.#y;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-keys/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-keys/exec.js
new file mode 100644
index 000000000000..63e834ef0af0
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-keys/exec.js
@@ -0,0 +1,16 @@
+let result;
+class C {
+  static #x = "#x";
+  static y = "y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    let x, y, z;
+    ({ #x: x, y, ...z } = C);
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  x: "#x", y: "y", z: { a: "a", b: "b", c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-keys/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-keys/input.js
new file mode 100644
index 000000000000..73d43ef46825
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-keys/input.js
@@ -0,0 +1,13 @@
+let result;
+class C {
+  static #x = "#x";
+  static y = "y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    let x, y, z;
+    ({ #x: x, y, ...z } = C);
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-keys/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-keys/output.js
new file mode 100644
index 000000000000..ae46e51f1469
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-keys/output.js
@@ -0,0 +1,21 @@
+let result;
+
+class C {
+  static #x = "#x";
+  static y = "y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    let x, y, z;
+    x = C.#x, ({
+      y,
+      ...z
+    } = C);
+    result = {
+      x,
+      y,
+      z
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-private-keys/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-private-keys/exec.js
new file mode 100644
index 000000000000..fcfcf3bafcd5
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-private-keys/exec.js
@@ -0,0 +1,16 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    let x, y, z;
+    ({ #x: x, #y: y, ...z } = C);
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  x: "#x", y: "#y", z: { a: "a", b: "b", c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-private-keys/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-private-keys/input.js
new file mode 100644
index 000000000000..f29b28b5a652
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-private-keys/input.js
@@ -0,0 +1,13 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    let x, y, z;
+    ({ #x: x, #y: y, ...z } = C);
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-private-keys/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-private-keys/output.js
new file mode 100644
index 000000000000..9cbe29ab2cce
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-and-private-keys/output.js
@@ -0,0 +1,19 @@
+let result;
+
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    let x, y, z;
+    x = C.#x, y = C.#y, ({ ...z
+    } = C);
+    result = {
+      x,
+      y,
+      z
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-under-private/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-under-private/exec.js
new file mode 100644
index 000000000000..6dff97a97aff
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-under-private/exec.js
@@ -0,0 +1,13 @@
+let result;
+class C {
+  static x = "x";
+  static y = "y";
+  static z = "z";
+  static #x = C;
+  static {
+    var x, y, z;
+    ({ x, #x: { y, ...z } } = C);
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({ x: "x", y: "y", z: { x: "x", z: "z" } })
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-under-private/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-under-private/input.js
new file mode 100644
index 000000000000..d67ebdde0914
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-under-private/input.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static x = "x";
+  static y = "y";
+  static z = "z";
+  static #x = C;
+  static {
+    var x, y, z;
+    ({ x, #x: { y, ...z } } = C);
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-under-private/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-under-private/output.js
new file mode 100644
index 000000000000..a31104ad6357
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest-under-private/output.js
@@ -0,0 +1,22 @@
+let result;
+
+class C {
+  static x = "x";
+  static y = "y";
+  static z = "z";
+  static #x = C;
+  static {
+    var x, y, z;
+    ({
+      x
+    } = C), ({
+      y,
+      ...z
+    } = C.#x);
+    result = {
+      x,
+      y,
+      z
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest/exec.js
new file mode 100644
index 000000000000..f03d0735bead
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest/exec.js
@@ -0,0 +1,16 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var a, b, x, y, z;
+    ({ [C.a]: a, #x: x, [C.b]: b, #y: y, ...z } = C);
+    result = { a, b, x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  a: "a", b: "b", x: "#x", y: "#y", z: { c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest/input.js
new file mode 100644
index 000000000000..231b2f804345
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest/input.js
@@ -0,0 +1,13 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var a, b, x, y, z;
+    ({ [C.a]: a, #x: x, [C.b]: b, #y: y, ...z } = C);
+    result = { a, b, x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest/output.js
new file mode 100644
index 000000000000..10ca5e47a965
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/object-rest/output.js
@@ -0,0 +1,26 @@
+let result;
+
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var _m, _m2;
+
+    var a, b, x, y, z;
+    ({
+      [_m = C.a]: a
+    } = C), x = C.#x, ({
+      [_m2 = C.b]: b
+    } = C), y = C.#y, z = babelHelpers.objectWithoutProperties(C, [_m, _m2].map(babelHelpers.toPropertyKey));
+    result = {
+      a,
+      b,
+      x,
+      y,
+      z
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/options.json
new file mode 100644
index 000000000000..b671b8bdab63
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["proposal-destructuring-private"],
+  "minNodeVersion": "16.11.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/under-param-initializer/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/under-param-initializer/exec.js
new file mode 100644
index 000000000000..387b1623a8f9
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/under-param-initializer/exec.js
@@ -0,0 +1,11 @@
+let a,b;
+class C {
+  static #x = { a: 1, b: 2 };
+  static {
+    (function f(r = { #x: { b }} = C) {})()
+  }
+  static m(r = { #x: { a } } = C) {}
+}
+C.m();
+expect(a).toBe(1);
+expect(b).toBe(2);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/under-param-initializer/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/under-param-initializer/input.js
new file mode 100644
index 000000000000..cd50bcd759bf
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/under-param-initializer/input.js
@@ -0,0 +1,10 @@
+let a;
+class C {
+  static #x = { a: 1, b: 2 };
+  static {
+    let b;
+    (function f(r = { #x: { b }} = C) {})()
+  }
+  static m(r = { #x: { a } } = C) {}
+}
+C.m();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/under-param-initializer/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/under-param-initializer/output.js
new file mode 100644
index 000000000000..e666e783149e
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assignment/under-param-initializer/output.js
@@ -0,0 +1,27 @@
+var _m2;
+
+let a;
+
+class C {
+  static #x = {
+    a: 1,
+    b: 2
+  };
+  static {
+    var _m;
+
+    let b;
+
+    (function f(r = (_m = C, ({
+      b
+    } = _m.#x), _m)) {})();
+
+  }
+
+  static m(r = (_m2 = C, ({
+    a
+  } = _m2.#x), _m2)) {}
+
+}
+
+C.m();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-ignoreFunctionLength/function-params/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-ignoreFunctionLength/function-params/input.js
new file mode 100644
index 000000000000..ab2d2de13412
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-ignoreFunctionLength/function-params/input.js
@@ -0,0 +1,7 @@
+class C {
+  static #x;
+  static 0(...[...{0: { #x: x }}]) {}
+  static 1(a, b = 1, { #x: x }, ...c) {}
+  static 2(a, b, { #x: x } = C) {}
+  static 3(a, b, { #x: x }, c = 1) {}
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-ignoreFunctionLength/function-params/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-ignoreFunctionLength/function-params/output.js
new file mode 100644
index 000000000000..9db270ef7691
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-ignoreFunctionLength/function-params/output.js
@@ -0,0 +1,26 @@
+class C {
+  static 0(..._p) {
+    var [..._p2] = _p,
+        x = babelHelpers.classStaticPrivateFieldSpecGet(_p2[0], C, _x);
+  }
+
+  static 1(a, b = 1, _p3, ..._p4) {
+    var x = babelHelpers.classStaticPrivateFieldSpecGet(_p3, C, _x),
+        c = _p4;
+  }
+
+  static 2(a, b, _p5) {
+    var x = babelHelpers.classStaticPrivateFieldSpecGet(_p5 === void 0 ? C : _p5, C, _x);
+  }
+
+  static 3(a, b, _p6, _p7) {
+    var x = babelHelpers.classStaticPrivateFieldSpecGet(_p6, C, _x),
+        c = _p7 === void 0 ? 1 : _p7;
+  }
+
+}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-ignoreFunctionLength/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-ignoreFunctionLength/options.json
new file mode 100644
index 000000000000..6101c1836f44
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-ignoreFunctionLength/options.json
@@ -0,0 +1,12 @@
+{
+  "assumptions": {
+    "ignoreFunctionLength": true
+  },
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties",
+    "proposal-private-methods",
+    ["proposal-object-rest-spread", { "useBuiltIns": true }]
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/options.json
new file mode 100644
index 000000000000..613db701c964
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/options.json
@@ -0,0 +1,12 @@
+{
+  "assumptions": {
+    "objectRestNoSymbols": true
+  },
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties",
+    "proposal-private-methods",
+    ["proposal-object-rest-spread", { "useBuiltIns": true }]
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/variable-declaration/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/variable-declaration/exec.js
new file mode 100644
index 000000000000..53ee397c5820
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/variable-declaration/exec.js
@@ -0,0 +1,15 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { [C.a]: a, #x: x, [C.b]: b, #y: y, ...z } = C;
+    result = { a, b, x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  a: "a", b: "b", x: "#x", y: "#y", z: { c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/variable-declaration/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/variable-declaration/input.js
new file mode 100644
index 000000000000..bffc7a5ee2b4
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/variable-declaration/input.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { [C.a]: a, #x: x, [C.b]: b, #y: y, ...z } = C;
+    result = { a, b, x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/variable-declaration/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/variable-declaration/output.js
new file mode 100644
index 000000000000..f525646493a3
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/assumption-objectRestNoSymbols/variable-declaration/output.js
@@ -0,0 +1,36 @@
+let result;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: "#x"
+};
+var _y = {
+  writable: true,
+  value: "#y"
+};
+babelHelpers.defineProperty(C, "a", "a");
+babelHelpers.defineProperty(C, "b", "b");
+babelHelpers.defineProperty(C, "c", "c");
+
+(() => {
+  var _m, _m2;
+
+  var {
+    [_m = C.a]: a
+  } = C,
+      x = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x),
+      {
+    [_m2 = C.b]: b
+  } = C,
+      y = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _y),
+      z = babelHelpers.objectWithoutPropertiesLoose(C, [_m, _m2].map(babelHelpers.toPropertyKey));
+  result = {
+    a,
+    b,
+    x,
+    y,
+    z
+  };
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/exec.js
new file mode 100644
index 000000000000..6b1df81d8ea2
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/exec.js
@@ -0,0 +1,10 @@
+var x;
+class C {
+  #x;
+  static {
+    x = "x";
+    try { throw new C() } catch ({ #x: x }) {
+    }
+  }
+}
+expect(x).toBe("x");
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/input.js
new file mode 100644
index 000000000000..b8ba97ae407d
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/input.js
@@ -0,0 +1,9 @@
+var x;
+class C {
+  #x;
+  static {
+    x = "x";
+    try { throw new C() } catch ({ #x: x }) {
+    }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/options.json
new file mode 100644
index 000000000000..8d357aef7402
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/options.json
@@ -0,0 +1,7 @@
+{
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties"
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/output.js
new file mode 100644
index 000000000000..5688afc9281d
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param--es2015/no-shadowed-params/output.js
@@ -0,0 +1,23 @@
+var x;
+
+var _x = /*#__PURE__*/new WeakMap();
+
+class C {
+  constructor() {
+    babelHelpers.classPrivateFieldInitSpec(this, _x, {
+      writable: true,
+      value: void 0
+    });
+  }
+
+}
+
+(() => {
+  x = "x";
+
+  try {
+    throw new C();
+  } catch (_e) {
+    let x = babelHelpers.classPrivateFieldGet(_e, _x);
+  }
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/exec.js
new file mode 100644
index 000000000000..6b1df81d8ea2
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/exec.js
@@ -0,0 +1,10 @@
+var x;
+class C {
+  #x;
+  static {
+    x = "x";
+    try { throw new C() } catch ({ #x: x }) {
+    }
+  }
+}
+expect(x).toBe("x");
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/input.js
new file mode 100644
index 000000000000..b8ba97ae407d
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/input.js
@@ -0,0 +1,9 @@
+var x;
+class C {
+  #x;
+  static {
+    x = "x";
+    try { throw new C() } catch ({ #x: x }) {
+    }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/options.json
new file mode 100644
index 000000000000..b671b8bdab63
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["proposal-destructuring-private"],
+  "minNodeVersion": "16.11.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/output.js
new file mode 100644
index 000000000000..45bc0a04f3ca
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/catch-param/no-shadowed-params/output.js
@@ -0,0 +1,15 @@
+var x;
+
+class C {
+  #x;
+  static {
+    x = "x";
+
+    try {
+      throw new C();
+    } catch (_e) {
+      let x = _e.#x;
+    }
+
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs-with-assign/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs-with-assign/exec.js
new file mode 100644
index 000000000000..a5758b3f342f
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs-with-assign/exec.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static #x = 42;
+  static {
+    let x, y;
+    for ({ #x: x } = { #x: y } = C;;) {
+      result = { x, y };
+      break;
+    }
+  }
+}
+expect(result).toStrictEqual({ x: 42, y: 42});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs-with-assign/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs-with-assign/input.js
new file mode 100644
index 000000000000..82b14c5452f3
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs-with-assign/input.js
@@ -0,0 +1,7 @@
+class C {
+  static #x = 42;
+  static {
+    let x, y;
+    for ({ #x: x } = { #x: y } = C;;) { break; }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs-with-assign/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs-with-assign/output.js
new file mode 100644
index 000000000000..ba1bd3c17a15
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs-with-assign/output.js
@@ -0,0 +1,16 @@
+class C {}
+
+var _x = {
+  writable: true,
+  value: 42
+};
+
+(() => {
+  let x, y;
+
+  for (_m = (_m2 = C, y = babelHelpers.classStaticPrivateFieldSpecGet(_m2, C, _x), _m2), x = babelHelpers.classStaticPrivateFieldSpecGet(_m, C, _x), _m;;) {
+    var _m, _m2;
+
+    break;
+  }
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs/input.js
new file mode 100644
index 000000000000..435022d57a6d
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs/input.js
@@ -0,0 +1,6 @@
+class C {
+  #x;
+  static {
+    for ({ #x: x } = this;;) { break; }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs/output.js
new file mode 100644
index 000000000000..12bf9e55f321
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/lhs/output.js
@@ -0,0 +1,19 @@
+var _x = /*#__PURE__*/new WeakMap();
+
+class C {
+  constructor() {
+    babelHelpers.classPrivateFieldInitSpec(this, _x, {
+      writable: true,
+      value: void 0
+    });
+  }
+
+}
+
+(() => {
+  for (_m = C, x = babelHelpers.classPrivateFieldGet(_m, _x), _m;;) {
+    var _m;
+
+    break;
+  }
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/options.json
new file mode 100644
index 000000000000..8d357aef7402
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/options.json
@@ -0,0 +1,7 @@
+{
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties"
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration-with-assign/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration-with-assign/exec.js
new file mode 100644
index 000000000000..50c718f481c0
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration-with-assign/exec.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static #x = 42;
+  static {
+    let y;
+    for (let { #x: x } = { #x: y } = C;;) {
+      result = { x, y };
+      break
+    };
+  }
+}
+expect(result).toStrictEqual({ x: 42, y: 42});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration-with-assign/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration-with-assign/input.js
new file mode 100644
index 000000000000..0b30c4deb3d2
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration-with-assign/input.js
@@ -0,0 +1,9 @@
+class C {
+  static #x = 42;
+  static {
+    let y;
+    for (let { #x: x } = { #x: y } = C;;) {
+      break
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration-with-assign/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration-with-assign/output.js
new file mode 100644
index 000000000000..89c4773d5c46
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration-with-assign/output.js
@@ -0,0 +1,18 @@
+class C {}
+
+var _x = {
+  writable: true,
+  value: 42
+};
+
+(() => {
+  let y;
+
+  for (let x = babelHelpers.classStaticPrivateFieldSpecGet((_m = C, y = babelHelpers.classStaticPrivateFieldSpecGet(_m, C, _x), _m), C, _x);;) {
+    var _m;
+
+    break;
+  }
+
+  ;
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration/input.js
new file mode 100644
index 000000000000..d9b6b142e217
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration/input.js
@@ -0,0 +1,6 @@
+class C {
+  static #x;
+  static {
+    for (let { #x: x } = C;;) { break; }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration/output.js
new file mode 100644
index 000000000000..b24ba926176f
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init--es2015/variable-declaration/output.js
@@ -0,0 +1,12 @@
+class C {}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  for (let x = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x);;) {
+    break;
+  }
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs-with-assign/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs-with-assign/exec.js
new file mode 100644
index 000000000000..a5758b3f342f
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs-with-assign/exec.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static #x = 42;
+  static {
+    let x, y;
+    for ({ #x: x } = { #x: y } = C;;) {
+      result = { x, y };
+      break;
+    }
+  }
+}
+expect(result).toStrictEqual({ x: 42, y: 42});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs-with-assign/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs-with-assign/input.js
new file mode 100644
index 000000000000..82b14c5452f3
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs-with-assign/input.js
@@ -0,0 +1,7 @@
+class C {
+  static #x = 42;
+  static {
+    let x, y;
+    for ({ #x: x } = { #x: y } = C;;) { break; }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs-with-assign/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs-with-assign/output.js
new file mode 100644
index 000000000000..fb12bc77834a
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs-with-assign/output.js
@@ -0,0 +1,13 @@
+class C {
+  static #x = 42;
+  static {
+    let x, y;
+
+    for (_m = (_m2 = C, y = _m2.#x, _m2), x = _m.#x, _m;;) {
+      var _m, _m2;
+
+      break;
+    }
+
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs/input.js
new file mode 100644
index 000000000000..435022d57a6d
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs/input.js
@@ -0,0 +1,6 @@
+class C {
+  #x;
+  static {
+    for ({ #x: x } = this;;) { break; }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs/output.js
new file mode 100644
index 000000000000..9ef3ef20cb47
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/lhs/output.js
@@ -0,0 +1,11 @@
+class C {
+  #x;
+  static {
+    for (_m = this, x = _m.#x, _m;;) {
+      var _m;
+
+      break;
+    }
+
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/options.json
new file mode 100644
index 000000000000..b671b8bdab63
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["proposal-destructuring-private"],
+  "minNodeVersion": "16.11.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration-with-assign/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration-with-assign/exec.js
new file mode 100644
index 000000000000..50c718f481c0
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration-with-assign/exec.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static #x = 42;
+  static {
+    let y;
+    for (let { #x: x } = { #x: y } = C;;) {
+      result = { x, y };
+      break
+    };
+  }
+}
+expect(result).toStrictEqual({ x: 42, y: 42});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration-with-assign/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration-with-assign/input.js
new file mode 100644
index 000000000000..0b30c4deb3d2
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration-with-assign/input.js
@@ -0,0 +1,9 @@
+class C {
+  static #x = 42;
+  static {
+    let y;
+    for (let { #x: x } = { #x: y } = C;;) {
+      break
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration-with-assign/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration-with-assign/output.js
new file mode 100644
index 000000000000..df0a155d4efa
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration-with-assign/output.js
@@ -0,0 +1,14 @@
+class C {
+  static #x = 42;
+  static {
+    let y;
+
+    for (let x = (_m = C, y = _m.#x, _m).#x;;) {
+      var _m;
+
+      break;
+    }
+
+    ;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration/input.js
new file mode 100644
index 000000000000..d9b6b142e217
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration/input.js
@@ -0,0 +1,6 @@
+class C {
+  static #x;
+  static {
+    for (let { #x: x } = C;;) { break; }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration/output.js
new file mode 100644
index 000000000000..99b21d9250da
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-init/variable-declaration/output.js
@@ -0,0 +1,9 @@
+class C {
+  static #x;
+  static {
+    for (let x = C.#x;;) {
+      break;
+    }
+
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs-with-shadowed-block-scoped/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs-with-shadowed-block-scoped/exec.js
new file mode 100644
index 000000000000..d9289567a2f7
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs-with-shadowed-block-scoped/exec.js
@@ -0,0 +1,10 @@
+class C {
+  static a = "a";
+  static #x;
+  static {
+    var x, a = "a";
+    for ({ #x: x, [a]: a } of [C]) {
+      const a = "A";
+    }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs-with-shadowed-block-scoped/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs-with-shadowed-block-scoped/input.js
new file mode 100644
index 000000000000..d9289567a2f7
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs-with-shadowed-block-scoped/input.js
@@ -0,0 +1,10 @@
+class C {
+  static a = "a";
+  static #x;
+  static {
+    var x, a = "a";
+    for ({ #x: x, [a]: a } of [C]) {
+      const a = "A";
+    }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs-with-shadowed-block-scoped/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs-with-shadowed-block-scoped/output.js
new file mode 100644
index 000000000000..2720cf683d2c
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs-with-shadowed-block-scoped/output.js
@@ -0,0 +1,21 @@
+class C {}
+
+babelHelpers.defineProperty(C, "a", "a");
+var _x = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  var x,
+      a = "a";
+
+  for (const _ref of [C]) {
+    x = babelHelpers.classStaticPrivateFieldSpecGet(_ref, C, _x), ({
+      [a]: a
+    } = _ref);
+    {
+      const a = "A";
+    }
+  }
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs/input.js
new file mode 100644
index 000000000000..f02105a5d715
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs/input.js
@@ -0,0 +1,6 @@
+class C {
+  #x;
+  static {
+    for ({ #x: x } of [this]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs/output.js
new file mode 100644
index 000000000000..356869f3e61f
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/lhs/output.js
@@ -0,0 +1,18 @@
+var _x = /*#__PURE__*/new WeakMap();
+
+class C {
+  constructor() {
+    babelHelpers.classPrivateFieldInitSpec(this, _x, {
+      writable: true,
+      value: void 0
+    });
+  }
+
+}
+
+(() => {
+  for (const _ref of [C]) {
+    x = babelHelpers.classPrivateFieldGet(_ref, _x);
+    ;
+  }
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/options.json
new file mode 100644
index 000000000000..8d357aef7402
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/options.json
@@ -0,0 +1,7 @@
+{
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties"
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration-block-scoped/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration-block-scoped/exec.js
new file mode 100644
index 000000000000..59f9f48f8c71
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration-block-scoped/exec.js
@@ -0,0 +1,10 @@
+class C {
+  static a = "a";
+  static #x;
+  static {
+    const a = "a";
+    for (const { #x: x, [a]: _ } of [C]) {
+      const a = "A";
+    }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration-block-scoped/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration-block-scoped/input.js
new file mode 100644
index 000000000000..59f9f48f8c71
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration-block-scoped/input.js
@@ -0,0 +1,10 @@
+class C {
+  static a = "a";
+  static #x;
+  static {
+    const a = "a";
+    for (const { #x: x, [a]: _ } of [C]) {
+      const a = "A";
+    }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration-block-scoped/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration-block-scoped/output.js
new file mode 100644
index 000000000000..dc98f60842bd
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration-block-scoped/output.js
@@ -0,0 +1,21 @@
+class C {}
+
+babelHelpers.defineProperty(C, "a", "a");
+var _x = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  const a = "a";
+
+  for (const _ref of [C]) {
+    const x = babelHelpers.classStaticPrivateFieldSpecGet(_ref, C, _x),
+          {
+      [a]: _
+    } = _ref;
+    {
+      const a = "A";
+    }
+  }
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration/input.js
new file mode 100644
index 000000000000..96346f23285b
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration/input.js
@@ -0,0 +1,6 @@
+class C {
+  #x;
+  static {
+    for (const { #x: x } of [this]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration/output.js
new file mode 100644
index 000000000000..b44bf3a082ec
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of--es2015/variable-declaration/output.js
@@ -0,0 +1,18 @@
+var _x = /*#__PURE__*/new WeakMap();
+
+class C {
+  constructor() {
+    babelHelpers.classPrivateFieldInitSpec(this, _x, {
+      writable: true,
+      value: void 0
+    });
+  }
+
+}
+
+(() => {
+  for (const _ref of [C]) {
+    const x = babelHelpers.classPrivateFieldGet(_ref, _x);
+    ;
+  }
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs-with-shadowed-block-scoped/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs-with-shadowed-block-scoped/exec.js
new file mode 100644
index 000000000000..d9289567a2f7
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs-with-shadowed-block-scoped/exec.js
@@ -0,0 +1,10 @@
+class C {
+  static a = "a";
+  static #x;
+  static {
+    var x, a = "a";
+    for ({ #x: x, [a]: a } of [C]) {
+      const a = "A";
+    }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs-with-shadowed-block-scoped/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs-with-shadowed-block-scoped/input.js
new file mode 100644
index 000000000000..d9289567a2f7
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs-with-shadowed-block-scoped/input.js
@@ -0,0 +1,10 @@
+class C {
+  static a = "a";
+  static #x;
+  static {
+    var x, a = "a";
+    for ({ #x: x, [a]: a } of [C]) {
+      const a = "A";
+    }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs-with-shadowed-block-scoped/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs-with-shadowed-block-scoped/output.js
new file mode 100644
index 000000000000..b55626d8c90b
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs-with-shadowed-block-scoped/output.js
@@ -0,0 +1,18 @@
+class C {
+  static a = "a";
+  static #x;
+  static {
+    var x,
+        a = "a";
+
+    for (const _ref of [C]) {
+      x = _ref.#x, ({
+        [a]: a
+      } = _ref);
+      {
+        const a = "A";
+      }
+    }
+
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs/input.js
new file mode 100644
index 000000000000..f02105a5d715
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs/input.js
@@ -0,0 +1,6 @@
+class C {
+  #x;
+  static {
+    for ({ #x: x } of [this]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs/output.js
new file mode 100644
index 000000000000..abd59a8e704d
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/lhs/output.js
@@ -0,0 +1,10 @@
+class C {
+  #x;
+  static {
+    for (const _ref of [this]) {
+      x = _ref.#x;
+      ;
+    }
+
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/options.json
new file mode 100644
index 000000000000..b671b8bdab63
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["proposal-destructuring-private"],
+  "minNodeVersion": "16.11.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration-block-scoped/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration-block-scoped/exec.js
new file mode 100644
index 000000000000..59f9f48f8c71
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration-block-scoped/exec.js
@@ -0,0 +1,10 @@
+class C {
+  static a = "a";
+  static #x;
+  static {
+    const a = "a";
+    for (const { #x: x, [a]: _ } of [C]) {
+      const a = "A";
+    }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration-block-scoped/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration-block-scoped/input.js
new file mode 100644
index 000000000000..59f9f48f8c71
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration-block-scoped/input.js
@@ -0,0 +1,10 @@
+class C {
+  static a = "a";
+  static #x;
+  static {
+    const a = "a";
+    for (const { #x: x, [a]: _ } of [C]) {
+      const a = "A";
+    }
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration-block-scoped/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration-block-scoped/output.js
new file mode 100644
index 000000000000..a4e6fd6b4598
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration-block-scoped/output.js
@@ -0,0 +1,18 @@
+class C {
+  static a = "a";
+  static #x;
+  static {
+    const a = "a";
+
+    for (const _ref of [C]) {
+      const x = _ref.#x,
+            {
+        [a]: _
+      } = _ref;
+      {
+        const a = "A";
+      }
+    }
+
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration/input.js
new file mode 100644
index 000000000000..96346f23285b
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration/input.js
@@ -0,0 +1,6 @@
+class C {
+  #x;
+  static {
+    for (const { #x: x } of [this]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration/output.js
new file mode 100644
index 000000000000..236bc19524d2
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/for-of/variable-declaration/output.js
@@ -0,0 +1,10 @@
+class C {
+  #x;
+  static {
+    for (const _ref of [this]) {
+      const x = _ref.#x;
+      ;
+    }
+
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/function-length/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/function-length/exec.js
new file mode 100644
index 000000000000..2f89b81049d4
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/function-length/exec.js
@@ -0,0 +1,11 @@
+class C {
+  static #x;
+  static 0(...[...{0: { #x: x }}]) {}
+  static 1(a, b = 1, { #x: x }, ...c) {}
+  static 2(a, b, { #x: x } = C) {}
+  static 3(a, b, { #x: x }, c = 1) {}
+}
+expect(C[0].length).toBe(0);
+expect(C[1].length).toBe(1);
+expect(C[2].length).toBe(2);
+expect(C[3].length).toBe(3);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/function-length/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/function-length/input.js
new file mode 100644
index 000000000000..ab2d2de13412
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/function-length/input.js
@@ -0,0 +1,7 @@
+class C {
+  static #x;
+  static 0(...[...{0: { #x: x }}]) {}
+  static 1(a, b = 1, { #x: x }, ...c) {}
+  static 2(a, b, { #x: x } = C) {}
+  static 3(a, b, { #x: x }, c = 1) {}
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/function-length/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/function-length/output.js
new file mode 100644
index 000000000000..7d3cfbe5de7c
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/function-length/output.js
@@ -0,0 +1,26 @@
+class C {
+  static 0(..._p) {
+    var [..._p2] = _p,
+        x = babelHelpers.classStaticPrivateFieldSpecGet(_p2[0], C, _x);
+  }
+
+  static 1(a, b = 1, _p3, ..._p4) {
+    var x = babelHelpers.classStaticPrivateFieldSpecGet(_p3, C, _x),
+        c = _p4;
+  }
+
+  static 2(a, b, _p5 = void 0) {
+    var x = babelHelpers.classStaticPrivateFieldSpecGet(_p5 === void 0 ? C : _p5, C, _x);
+  }
+
+  static 3(a, b, _p6, _p7 = void 0) {
+    var x = babelHelpers.classStaticPrivateFieldSpecGet(_p6, C, _x),
+        c = _p7 === void 0 ? 1 : _p7;
+  }
+
+}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/no-shadowed-params/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/no-shadowed-params/input.js
new file mode 100644
index 000000000000..6d39f49343ca
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/no-shadowed-params/input.js
@@ -0,0 +1,5 @@
+class C {
+  #x;
+  m(a = 1, { #x: x }, b, ...c) {
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/no-shadowed-params/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/no-shadowed-params/output.js
new file mode 100644
index 000000000000..657643b209fe
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/no-shadowed-params/output.js
@@ -0,0 +1,17 @@
+var _x = /*#__PURE__*/new WeakMap();
+
+class C {
+  constructor() {
+    babelHelpers.classPrivateFieldInitSpec(this, _x, {
+      writable: true,
+      value: void 0
+    });
+  }
+
+  m(a = 1, _p, _p2, ..._p3) {
+    var x = babelHelpers.classPrivateFieldGet(_p, _x),
+        b = _p2,
+        c = _p3;
+  }
+
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/options.json
new file mode 100644
index 000000000000..8d357aef7402
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/options.json
@@ -0,0 +1,7 @@
+{
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties"
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/shadowed-params/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/shadowed-params/input.js
new file mode 100644
index 000000000000..196951aa94ef
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/shadowed-params/input.js
@@ -0,0 +1,6 @@
+class C {
+  #x;
+  m(a = 1, { #x: x }, b, ...c) {
+    var b = 1;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/shadowed-params/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/shadowed-params/output.js
new file mode 100644
index 000000000000..e6c11d5e6ab6
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params--es2015/shadowed-params/output.js
@@ -0,0 +1,20 @@
+var _x = /*#__PURE__*/new WeakMap();
+
+class C {
+  constructor() {
+    babelHelpers.classPrivateFieldInitSpec(this, _x, {
+      writable: true,
+      value: void 0
+    });
+  }
+
+  m(a = 1, _p, _p2, ..._p3) {
+    var x = babelHelpers.classPrivateFieldGet(_p, _x),
+        b = _p2,
+        c = _p3;
+    return function (b) {
+      var b = 1;
+    }(b);
+  }
+
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/function-length/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/function-length/exec.js
new file mode 100644
index 000000000000..2f89b81049d4
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/function-length/exec.js
@@ -0,0 +1,11 @@
+class C {
+  static #x;
+  static 0(...[...{0: { #x: x }}]) {}
+  static 1(a, b = 1, { #x: x }, ...c) {}
+  static 2(a, b, { #x: x } = C) {}
+  static 3(a, b, { #x: x }, c = 1) {}
+}
+expect(C[0].length).toBe(0);
+expect(C[1].length).toBe(1);
+expect(C[2].length).toBe(2);
+expect(C[3].length).toBe(3);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/function-length/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/function-length/input.js
new file mode 100644
index 000000000000..ab2d2de13412
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/function-length/input.js
@@ -0,0 +1,7 @@
+class C {
+  static #x;
+  static 0(...[...{0: { #x: x }}]) {}
+  static 1(a, b = 1, { #x: x }, ...c) {}
+  static 2(a, b, { #x: x } = C) {}
+  static 3(a, b, { #x: x }, c = 1) {}
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/function-length/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/function-length/output.js
new file mode 100644
index 000000000000..8fdd49231735
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/function-length/output.js
@@ -0,0 +1,23 @@
+class C {
+  static #x;
+
+  static 0(..._p) {
+    var [..._p2] = _p,
+        x = _p2[0].#x;
+  }
+
+  static 1(a, b = 1, _p3, ..._p4) {
+    var x = _p3.#x,
+        c = _p4;
+  }
+
+  static 2(a, b, _p5 = void 0) {
+    var x = (_p5 === void 0 ? C : _p5).#x;
+  }
+
+  static 3(a, b, _p6, _p7 = void 0) {
+    var x = _p6.#x,
+        c = _p7 === void 0 ? 1 : _p7;
+  }
+
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/no-shadowed-params/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/no-shadowed-params/input.js
new file mode 100644
index 000000000000..6d39f49343ca
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/no-shadowed-params/input.js
@@ -0,0 +1,5 @@
+class C {
+  #x;
+  m(a = 1, { #x: x }, b, ...c) {
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/no-shadowed-params/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/no-shadowed-params/output.js
new file mode 100644
index 000000000000..d5263e0ac70f
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/no-shadowed-params/output.js
@@ -0,0 +1,10 @@
+class C {
+  #x;
+
+  m(a = 1, _p, _p2, ..._p3) {
+    var x = _p.#x,
+        b = _p2,
+        c = _p3;
+  }
+
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/options.json
new file mode 100644
index 000000000000..b671b8bdab63
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["proposal-destructuring-private"],
+  "minNodeVersion": "16.11.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/shadowed-params/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/shadowed-params/input.js
new file mode 100644
index 000000000000..196951aa94ef
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/shadowed-params/input.js
@@ -0,0 +1,6 @@
+class C {
+  #x;
+  m(a = 1, { #x: x }, b, ...c) {
+    var b = 1;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/shadowed-params/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/shadowed-params/output.js
new file mode 100644
index 000000000000..a4d9eb4c525a
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/function-params/shadowed-params/output.js
@@ -0,0 +1,13 @@
+class C {
+  #x;
+
+  m(a = 1, _p, _p2, ..._p3) {
+    var x = _p.#x,
+        b = _p2,
+        c = _p3;
+    return function (b) {
+      var b = 1;
+    }(b);
+  }
+
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/array-pattern-with-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/array-pattern-with-rest/exec.js
new file mode 100644
index 000000000000..38bf12b34320
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/array-pattern-with-rest/exec.js
@@ -0,0 +1,26 @@
+var log = [];
+
+function push(x, y = x) { log.push(x); return y; }
+
+var log = [];
+
+function push(x, y = x) { log.push(x); return y; }
+
+class C {
+  static get a() { push(1) }
+  static get b() { push(6) }
+  static get c() { push(10) }
+  static get d() { push(13) }
+  static get #x() { push(3) };
+  static get #y() { return push(8, C) };
+  static {
+    var [{ [push(0, "a")]: a = push(2), #x: {
+      [push(5, "b")]: b = push(7),
+      #y: y = push(-1),
+      [push(9, "c")]: c = push(11)
+    } = push(4, C), [push(12, "d")]: d = push(14) }, ...{ [push(15)]: e = push(16), ...f }] = [C];
+  }
+}
+
+var nums = Array.from({ length: 17 }, (_, i) => i);
+expect(log).toStrictEqual(nums);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/array-pattern/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/array-pattern/exec.js
new file mode 100644
index 000000000000..f459199da656
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/array-pattern/exec.js
@@ -0,0 +1,22 @@
+var log = [];
+
+function push(x, y = x) { log.push(x); return y; }
+
+class C {
+  static get a() { push(1) }
+  static get b() { push(6) }
+  static get c() { push(10) }
+  static get d() { push(13) }
+  static get #x() { push(3) };
+  static get #y() { return push(8, C) };
+  static {
+    var [{ [push(0, "a")]: a = push(2), #x: {
+      [push(5, "b")]: b = push(7),
+      #y: y = push(-1),
+      [push(9, "c")]: c = push(11)
+    } = push(4, C), [push(12, "d")]: d = push(14) }, e = push(15)] = [C];
+  }
+}
+
+var nums = Array.from({ length: 16 }, (_, i) => i);
+expect(log).toStrictEqual(nums);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/object-pattern-with-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/object-pattern-with-rest/exec.js
new file mode 100644
index 000000000000..47b7210eb0eb
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/object-pattern-with-rest/exec.js
@@ -0,0 +1,23 @@
+var log = [];
+
+function push(x, y = x) { log.push(x); return y; }
+
+class C {
+  static get a() { push(1) }
+  static get b() { push(6) }
+  static get c() { push(10) }
+  static get d() { push(13) }
+  static get #x() { push(3) };
+  static get #y() { return push(8, C) };
+  static get #z() { push(15) }
+  static {
+    var { [push(0, "a")]: a = push(2), #x: {
+      [push(5, "b")]: b = push(7),
+      #y: y = push(-1),
+      [push(9, "c")]: c = push(11)
+    } = push(4, C), [push(12, "d")]: d = push(14), #z: z = push(16), ...f } = C;
+  }
+}
+
+var nums = Array.from({ length: 17 }, (_, i) => i);
+expect(log).toStrictEqual(nums);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/object-pattern/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/object-pattern/exec.js
new file mode 100644
index 000000000000..e7a7d9d08e11
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/object-pattern/exec.js
@@ -0,0 +1,22 @@
+var log = [];
+
+function push(x, y = x) { log.push(x); return y; }
+
+class C {
+  static get a() { push(1) }
+  static get b() { push(6) }
+  static get c() { push(10) }
+  static get d() { push(13) }
+  static get #x() { push(3) };
+  static get #y() { return push(8, C) };
+  static {
+    var { [push(0, "a")]: a = push(2), #x: {
+      [push(5, "b")]: b = push(7),
+      #y: y = push(-1),
+      [push(9, "c")]: c = push(11)
+    } = push(4, C), [push(12, "d")]: d = push(14) } = C;
+  }
+}
+
+var nums = Array.from({ length: 15 }, (_, i) => i);
+expect(log).toStrictEqual(nums);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/options.json
new file mode 100644
index 000000000000..e1c5858604ed
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering--es2015/options.json
@@ -0,0 +1,9 @@
+{
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties",
+    "proposal-private-methods",
+    ["proposal-object-rest-spread", { "useBuiltIns": true }]
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/.array-pattern-side-effect-iterable/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/.array-pattern-side-effect-iterable/exec.js
new file mode 100644
index 000000000000..d2b79d1a537d
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/.array-pattern-side-effect-iterable/exec.js
@@ -0,0 +1,29 @@
+var log = [];
+
+function push(x, y = x) { log.push(x); return y; }
+
+class C {
+  static get a() { push(2) }
+  static get b() { push(7) }
+  static get c() { push(11) }
+  static get d() { push(15) }
+  static get #x() { push(4) };
+  static get #y() { return push(9, C) };
+  static {
+    function *iterator() {
+      push(0);
+      yield C;
+      push(13);
+      yield C;
+    }
+
+    var [{ [push(1, "a")]: a = push(3), #x: {
+      [push(6, "b")]: b = push(8),
+      #y: y = push(-1),
+      [push(10, "c")]: c = push(12)
+    } = push(5, C) }, { [push(14, "d")]: d = push(16) }] = iterator();
+  }
+}
+
+var nums = Array.from({ length: 16 }, (_, i) => i);
+expect(log).toStrictEqual(nums);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/array-pattern-with-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/array-pattern-with-rest/exec.js
new file mode 100644
index 000000000000..38bf12b34320
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/array-pattern-with-rest/exec.js
@@ -0,0 +1,26 @@
+var log = [];
+
+function push(x, y = x) { log.push(x); return y; }
+
+var log = [];
+
+function push(x, y = x) { log.push(x); return y; }
+
+class C {
+  static get a() { push(1) }
+  static get b() { push(6) }
+  static get c() { push(10) }
+  static get d() { push(13) }
+  static get #x() { push(3) };
+  static get #y() { return push(8, C) };
+  static {
+    var [{ [push(0, "a")]: a = push(2), #x: {
+      [push(5, "b")]: b = push(7),
+      #y: y = push(-1),
+      [push(9, "c")]: c = push(11)
+    } = push(4, C), [push(12, "d")]: d = push(14) }, ...{ [push(15)]: e = push(16), ...f }] = [C];
+  }
+}
+
+var nums = Array.from({ length: 17 }, (_, i) => i);
+expect(log).toStrictEqual(nums);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/array-pattern/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/array-pattern/exec.js
new file mode 100644
index 000000000000..f459199da656
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/array-pattern/exec.js
@@ -0,0 +1,22 @@
+var log = [];
+
+function push(x, y = x) { log.push(x); return y; }
+
+class C {
+  static get a() { push(1) }
+  static get b() { push(6) }
+  static get c() { push(10) }
+  static get d() { push(13) }
+  static get #x() { push(3) };
+  static get #y() { return push(8, C) };
+  static {
+    var [{ [push(0, "a")]: a = push(2), #x: {
+      [push(5, "b")]: b = push(7),
+      #y: y = push(-1),
+      [push(9, "c")]: c = push(11)
+    } = push(4, C), [push(12, "d")]: d = push(14) }, e = push(15)] = [C];
+  }
+}
+
+var nums = Array.from({ length: 16 }, (_, i) => i);
+expect(log).toStrictEqual(nums);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/object-pattern-with-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/object-pattern-with-rest/exec.js
new file mode 100644
index 000000000000..47b7210eb0eb
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/object-pattern-with-rest/exec.js
@@ -0,0 +1,23 @@
+var log = [];
+
+function push(x, y = x) { log.push(x); return y; }
+
+class C {
+  static get a() { push(1) }
+  static get b() { push(6) }
+  static get c() { push(10) }
+  static get d() { push(13) }
+  static get #x() { push(3) };
+  static get #y() { return push(8, C) };
+  static get #z() { push(15) }
+  static {
+    var { [push(0, "a")]: a = push(2), #x: {
+      [push(5, "b")]: b = push(7),
+      #y: y = push(-1),
+      [push(9, "c")]: c = push(11)
+    } = push(4, C), [push(12, "d")]: d = push(14), #z: z = push(16), ...f } = C;
+  }
+}
+
+var nums = Array.from({ length: 17 }, (_, i) => i);
+expect(log).toStrictEqual(nums);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/object-pattern/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/object-pattern/exec.js
new file mode 100644
index 000000000000..e7a7d9d08e11
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/object-pattern/exec.js
@@ -0,0 +1,22 @@
+var log = [];
+
+function push(x, y = x) { log.push(x); return y; }
+
+class C {
+  static get a() { push(1) }
+  static get b() { push(6) }
+  static get c() { push(10) }
+  static get d() { push(13) }
+  static get #x() { push(3) };
+  static get #y() { return push(8, C) };
+  static {
+    var { [push(0, "a")]: a = push(2), #x: {
+      [push(5, "b")]: b = push(7),
+      #y: y = push(-1),
+      [push(9, "c")]: c = push(11)
+    } = push(4, C), [push(12, "d")]: d = push(14) } = C;
+  }
+}
+
+var nums = Array.from({ length: 15 }, (_, i) => i);
+expect(log).toStrictEqual(nums);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/options.json
new file mode 100644
index 000000000000..b671b8bdab63
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/ordering/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["proposal-destructuring-private"],
+  "minNodeVersion": "16.11.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/.valid-preset-typescript/input.ts b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/.valid-preset-typescript/input.ts
new file mode 100644
index 000000000000..e108eb0a6b7e
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/.valid-preset-typescript/input.ts
@@ -0,0 +1,4 @@
+class C {
+  #x;
+  constructor(public foo, { #x: x}) {}
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/.valid-preset-typescript/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/.valid-preset-typescript/options.json
new file mode 100644
index 000000000000..901cfe6b50f9
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/.valid-preset-typescript/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["proposal-destructuring-private"],
+  "presets": ["typescript"]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/.valid-preset-typescript/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/.valid-preset-typescript/output.js
new file mode 100644
index 000000000000..67bc13190763
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/.valid-preset-typescript/output.js
@@ -0,0 +1,10 @@
+class C {
+  #x;
+
+  constructor(_p, _p2) {
+    var foo = _p,
+        x = _p2.#x;
+    this.foo = foo;
+  }
+
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/invalid-after-destructuring-private/input.ts b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/invalid-after-destructuring-private/input.ts
new file mode 100644
index 000000000000..e108eb0a6b7e
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/invalid-after-destructuring-private/input.ts
@@ -0,0 +1,4 @@
+class C {
+  #x;
+  constructor(public foo, { #x: x}) {}
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/invalid-after-destructuring-private/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/invalid-after-destructuring-private/options.json
new file mode 100644
index 000000000000..c033e98f1b8e
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/invalid-after-destructuring-private/options.json
@@ -0,0 +1,6 @@
+{
+  "plugins": ["proposal-destructuring-private", "transform-typescript"],
+  "throws": [
+    "TypeScript features must first be transformed by @babel/plugin-transform-typescript."
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/valid-before-destructuring-private/input.ts b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/valid-before-destructuring-private/input.ts
new file mode 100644
index 000000000000..e108eb0a6b7e
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/valid-before-destructuring-private/input.ts
@@ -0,0 +1,4 @@
+class C {
+  #x;
+  constructor(public foo, { #x: x}) {}
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/valid-before-destructuring-private/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/valid-before-destructuring-private/options.json
new file mode 100644
index 000000000000..21e1abbf8a7b
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/valid-before-destructuring-private/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["transform-typescript", "proposal-destructuring-private"]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/valid-before-destructuring-private/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/valid-before-destructuring-private/output.js
new file mode 100644
index 000000000000..f7222cd31345
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/typescript/valid-before-destructuring-private/output.js
@@ -0,0 +1,9 @@
+class C {
+  #x;
+
+  constructor(foo, _p) {
+    var x = _p.#x;
+    this.foo = foo;
+  }
+
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest-only/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest-only/exec.js
new file mode 100644
index 000000000000..91ce1174575d
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest-only/exec.js
@@ -0,0 +1,9 @@
+let result;
+class C {
+  static #x;
+  static {
+    var [...{ 0: { #x: x = 1 }, ...z }] = [C];
+    result = { x, z };
+  }
+}
+expect(result).toStrictEqual({ x: 1, z: {} });
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest-only/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest-only/input.js
new file mode 100644
index 000000000000..0efba383ed22
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest-only/input.js
@@ -0,0 +1,8 @@
+let result;
+class C {
+  static #x;
+  static {
+    var [...{ 0: { #x: x = 1 }, ...z }] = [C];
+    result = { x, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest-only/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest-only/output.js
new file mode 100644
index 000000000000..34b1fbe5524c
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest-only/output.js
@@ -0,0 +1,21 @@
+const _excluded = ["0"];
+let result;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  var [..._p] = [C],
+      _m = babelHelpers.classStaticPrivateFieldSpecGet(_p[0], C, _x),
+      x = _m === void 0 ? 1 : _m,
+      z = babelHelpers.objectWithoutProperties(_p, _excluded);
+
+  result = {
+    x,
+    z
+  };
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest/exec.js
new file mode 100644
index 000000000000..216a27c621bf
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest/exec.js
@@ -0,0 +1,9 @@
+let result;
+class C {
+  static #x;
+  static {
+    var [{ #x: x = 1 }, ...z] = [C];
+    result = { x, z };
+  }
+}
+expect(result).toStrictEqual({ x: 1, z: [] });
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest/input.js
new file mode 100644
index 000000000000..7f0e8f3446f3
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest/input.js
@@ -0,0 +1,6 @@
+class C {
+  static #x;
+  static {
+    var [{ #x: x = 1 }, ...z] = [C];
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest/output.js
new file mode 100644
index 000000000000..8c9aeb90baa6
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/array-rest/output.js
@@ -0,0 +1,13 @@
+class C {}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  var [_p, ..._p2] = [C],
+      _m = babelHelpers.classStaticPrivateFieldSpecGet(_p, C, _x),
+      x = _m === void 0 ? 1 : _m,
+      z = _p2;
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/basic/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/basic/exec.js
new file mode 100644
index 000000000000..cbee2112f773
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/basic/exec.js
@@ -0,0 +1,9 @@
+let result;
+class C {
+  static #x;
+  static {
+    var { a = 1, #x: x = 2, b = 3 } = C;
+    result = { a, x, b };
+  }
+}
+expect(result).toStrictEqual({ a: 1, x: 2, b: 3 });
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/basic/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/basic/input.js
new file mode 100644
index 000000000000..0ed7639bb2c8
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/basic/input.js
@@ -0,0 +1,6 @@
+class C {
+  static #x;
+  static {
+    var { a = 1, #x: x = 2, b = 3 } = C;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/basic/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/basic/output.js
new file mode 100644
index 000000000000..d0b62f6685cb
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/basic/output.js
@@ -0,0 +1,17 @@
+class C {}
+
+var _x = {
+  writable: true,
+  value: void 0
+};
+
+(() => {
+  var {
+    a = 1
+  } = C,
+      _m = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x),
+      x = _m === void 0 ? 2 : _m,
+      {
+    b = 3
+  } = C;
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested-under-array-pattern/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested-under-array-pattern/exec.js
new file mode 100644
index 000000000000..026ddd6c82a8
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested-under-array-pattern/exec.js
@@ -0,0 +1,13 @@
+class C {
+  static #x = "x";
+  static #y = [];
+  static #z;
+  static self = C;
+  static #self() { return C }
+  static {
+    var [{ #x: x } = C.self, { #y: [,{ #z: y = C.#self() } = C.self ] },,z = y.#y] = [this,this];
+    expect(x).toBe("x");
+    expect(y).toBe(C);
+    expect(z).toStrictEqual([]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested-under-array-pattern/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested-under-array-pattern/input.js
new file mode 100644
index 000000000000..7570c494dd96
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested-under-array-pattern/input.js
@@ -0,0 +1,10 @@
+class C {
+  static #x = "x";
+  static #y = [];
+  static #z;
+  static self = C;
+  static #self() { return C }
+  static {
+    var [{ #x: x } = C.self, { #y: [,{ #z: y = C.#self() } = C.self ] },,z = y.#y] = [this,this];
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested-under-array-pattern/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested-under-array-pattern/output.js
new file mode 100644
index 000000000000..6d62674ff6ca
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested-under-array-pattern/output.js
@@ -0,0 +1,28 @@
+class C {}
+
+function _self() {
+  return C;
+}
+
+var _x = {
+  writable: true,
+  value: "x"
+};
+var _y = {
+  writable: true,
+  value: []
+};
+var _z = {
+  writable: true,
+  value: void 0
+};
+babelHelpers.defineProperty(C, "self", C);
+
+(() => {
+  var [_p, _p2,, _p3] = [C, C],
+      x = babelHelpers.classStaticPrivateFieldSpecGet(_p === void 0 ? C.self : _p, C, _x),
+      [, _p4] = babelHelpers.classStaticPrivateFieldSpecGet(_p2, C, _y),
+      _m = babelHelpers.classStaticPrivateFieldSpecGet(_p4 === void 0 ? C.self : _p4, C, _z),
+      y = _m === void 0 ? babelHelpers.classStaticPrivateMethodGet(C, C, _self).call(C) : _m,
+      z = _p3 === void 0 ? babelHelpers.classStaticPrivateFieldSpecGet(y, C, _y) : _p3;
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/exec.js
new file mode 100644
index 000000000000..504cee587e65
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/exec.js
@@ -0,0 +1,21 @@
+let result;
+class C {
+  static #y = "y";
+  static #z = "self";
+  static #x;
+  static b = "b";
+  static self = C;
+  static #self = C;
+  static {
+    let cloned;
+    var { #x: { [C.#z]: { b, #x: y = (C.b = "bb", C.#self.#y) }, #x: yy = (delete C.self, { ...cloned } = C, C.#y = "yy") } = C.#self, #y: yy2 } = C;
+    result = { b, y, yy, cloned, yy2 };
+  }
+}
+expect(result).toStrictEqual({
+  b: "b",
+  y: "y",
+  yy: "yy",
+  cloned: { b: "bb" },
+  yy2: "yy"
+})
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/input.js
new file mode 100644
index 000000000000..50fe617b26cc
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/input.js
@@ -0,0 +1,12 @@
+class C {
+  static #y = "y";
+  static #z = "self";
+  static #x;
+  static b = "b";
+  static self = C;
+  static #self = C;
+  static {
+    let cloned;
+    var { #x: { [C.#z]: { b, #x: y = (C.b = "bb", C.#self.#y) }, #x: yy = (delete C.self, { ...cloned } = C, C.#y = "yy") } = C.#self, #y: yy2 } = C;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/options.json
new file mode 100644
index 000000000000..48eb48aad7d6
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/options.json
@@ -0,0 +1,9 @@
+{
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties",
+    "proposal-private-methods"
+  ],
+  "minNodeVersion": "8.0.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/output.js
new file mode 100644
index 000000000000..77a8a9a3bbcc
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/nested/output.js
@@ -0,0 +1,37 @@
+class C {}
+
+var _y = {
+  writable: true,
+  value: "y"
+};
+var _z = {
+  writable: true,
+  value: "self"
+};
+var _x = {
+  writable: true,
+  value: void 0
+};
+babelHelpers.defineProperty(C, "b", "b");
+babelHelpers.defineProperty(C, "self", C);
+var _self = {
+  writable: true,
+  value: C
+};
+
+(() => {
+  let cloned;
+
+  var _m = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x),
+      _m2 = _m === void 0 ? babelHelpers.classStaticPrivateFieldSpecGet(C, C, _self) : _m,
+      _m3 = _m2[babelHelpers.classStaticPrivateFieldSpecGet(C, C, _z)],
+      {
+    b
+  } = _m3,
+      _m4 = babelHelpers.classStaticPrivateFieldSpecGet(_m3, C, _x),
+      y = _m4 === void 0 ? (C.b = "bb", babelHelpers.classStaticPrivateFieldSpecGet(babelHelpers.classStaticPrivateFieldSpecGet(C, C, _self), C, _y)) : _m4,
+      _m5 = babelHelpers.classStaticPrivateFieldSpecGet(_m2, C, _x),
+      yy = _m5 === void 0 ? (delete C.self, ({ ...cloned
+  } = C), babelHelpers.classStaticPrivateFieldSpecSet(C, C, _y, "yy")) : _m5,
+      yy2 = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _y);
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/non-identifier-keys/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/non-identifier-keys/input.js
new file mode 100644
index 000000000000..fc5b7e36b72c
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/non-identifier-keys/input.js
@@ -0,0 +1,6 @@
+class C {
+  static #x;
+  static {
+    var { "0": { #x: w }, 1: { #x: x }, 2n: {#x: y}, 3m: {#x: z} } = [C, C, C, C];
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/non-identifier-keys/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/non-identifier-keys/options.json
new file mode 100644
index 000000000000..5e85d3896305
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/non-identifier-keys/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["proposal-destructuring-private", "syntax-decimal"],
+  "minNodeVersion": "16.11.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/non-identifier-keys/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/non-identifier-keys/output.js
new file mode 100644
index 000000000000..0579a8964deb
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/non-identifier-keys/output.js
@@ -0,0 +1,10 @@
+class C {
+  static #x;
+  static {
+    var _m = [C, C, C, C],
+        w = _m["0"].#x,
+        x = _m[1].#x,
+        y = _m[2n].#x,
+        z = _m[3m].#x;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-keys/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-keys/exec.js
new file mode 100644
index 000000000000..4c238f56809a
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-keys/exec.js
@@ -0,0 +1,15 @@
+let result;
+class C {
+  static #x = "#x";
+  static y = "y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { #x: x, y, ...z } = C;
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  x: "#x", y: "y", z: { a: "a", b: "b", c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-keys/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-keys/input.js
new file mode 100644
index 000000000000..d8aa33d3efd1
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-keys/input.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static #x = "#x";
+  static y = "y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { #x: x, y, ...z } = C;
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-keys/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-keys/output.js
new file mode 100644
index 000000000000..f2d4bd17865d
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-keys/output.js
@@ -0,0 +1,26 @@
+const _excluded = ["y"];
+let result;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: "#x"
+};
+babelHelpers.defineProperty(C, "y", "y");
+babelHelpers.defineProperty(C, "a", "a");
+babelHelpers.defineProperty(C, "b", "b");
+babelHelpers.defineProperty(C, "c", "c");
+
+(() => {
+  var x = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x),
+      {
+    y
+  } = C,
+      z = babelHelpers.objectWithoutProperties(C, _excluded);
+  result = {
+    x,
+    y,
+    z
+  };
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-private-keys/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-private-keys/exec.js
new file mode 100644
index 000000000000..109bcfba54aa
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-private-keys/exec.js
@@ -0,0 +1,15 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { #x: x, #y: y, ...z } = C;
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  x: "#x", y: "#y", z: { a: "a", b: "b", c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-private-keys/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-private-keys/input.js
new file mode 100644
index 000000000000..30e7783da1b1
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-private-keys/input.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { #x: x, #y: y, ...z } = C;
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-private-keys/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-private-keys/output.js
new file mode 100644
index 000000000000..a4cb5e90ca77
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-and-private-keys/output.js
@@ -0,0 +1,26 @@
+let result;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: "#x"
+};
+var _y = {
+  writable: true,
+  value: "#y"
+};
+babelHelpers.defineProperty(C, "a", "a");
+babelHelpers.defineProperty(C, "b", "b");
+babelHelpers.defineProperty(C, "c", "c");
+
+(() => {
+  var x = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x),
+      y = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _y),
+      z = Object.assign({}, C);
+  result = {
+    x,
+    y,
+    z
+  };
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-under-private/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-under-private/exec.js
new file mode 100644
index 000000000000..57bd774a7c43
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-under-private/exec.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static x = "x";
+  static y = "y";
+  static z = "z";
+  static #x = C;
+  static {
+    var { x, #x: { y, ...z } } = C;
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({ x: "x", y: "y", z: { x: "x", z: "z" } })
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-under-private/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-under-private/input.js
new file mode 100644
index 000000000000..abbe3dd5d8f5
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-under-private/input.js
@@ -0,0 +1,11 @@
+let result;
+class C {
+  static x = "x";
+  static y = "y";
+  static z = "z";
+  static #x = C;
+  static {
+    var { x, #x: { y, ...z } } = C;
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-under-private/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-under-private/output.js
new file mode 100644
index 000000000000..c0c57671bfbd
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest-under-private/output.js
@@ -0,0 +1,29 @@
+const _excluded = ["y"];
+let result;
+
+class C {}
+
+babelHelpers.defineProperty(C, "x", "x");
+babelHelpers.defineProperty(C, "y", "y");
+babelHelpers.defineProperty(C, "z", "z");
+var _x = {
+  writable: true,
+  value: C
+};
+
+(() => {
+  var {
+    x
+  } = C,
+      _babelHelpers$classSt = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x),
+      {
+    y
+  } = _babelHelpers$classSt,
+      z = babelHelpers.objectWithoutProperties(_babelHelpers$classSt, _excluded);
+
+  result = {
+    x,
+    y,
+    z
+  };
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/exec.js
new file mode 100644
index 000000000000..53ee397c5820
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/exec.js
@@ -0,0 +1,15 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { [C.a]: a, #x: x, [C.b]: b, #y: y, ...z } = C;
+    result = { a, b, x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  a: "a", b: "b", x: "#x", y: "#y", z: { c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/input.js
new file mode 100644
index 000000000000..bffc7a5ee2b4
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/input.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { [C.a]: a, #x: x, [C.b]: b, #y: y, ...z } = C;
+    result = { a, b, x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/options.json
new file mode 100644
index 000000000000..82bccc4aeed5
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/options.json
@@ -0,0 +1,8 @@
+{
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties",
+    "proposal-private-methods"
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/output.js
new file mode 100644
index 000000000000..bcacc784b73f
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/object-rest/output.js
@@ -0,0 +1,36 @@
+let result;
+
+class C {}
+
+var _x = {
+  writable: true,
+  value: "#x"
+};
+var _y = {
+  writable: true,
+  value: "#y"
+};
+babelHelpers.defineProperty(C, "a", "a");
+babelHelpers.defineProperty(C, "b", "b");
+babelHelpers.defineProperty(C, "c", "c");
+
+(() => {
+  var _m, _m2;
+
+  var {
+    [_m = C.a]: a
+  } = C,
+      x = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _x),
+      {
+    [_m2 = C.b]: b
+  } = C,
+      y = babelHelpers.classStaticPrivateFieldSpecGet(C, C, _y),
+      z = babelHelpers.objectWithoutProperties(C, [_m, _m2].map(babelHelpers.toPropertyKey));
+  result = {
+    a,
+    b,
+    x,
+    y,
+    z
+  };
+})();
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/options.json
new file mode 100644
index 000000000000..e1c5858604ed
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration--es2015/options.json
@@ -0,0 +1,9 @@
+{
+  "plugins": [
+    "proposal-destructuring-private",
+    "proposal-class-static-block",
+    "proposal-class-properties",
+    "proposal-private-methods",
+    ["proposal-object-rest-spread", { "useBuiltIns": true }]
+  ]
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest-only/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest-only/exec.js
new file mode 100644
index 000000000000..91ce1174575d
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest-only/exec.js
@@ -0,0 +1,9 @@
+let result;
+class C {
+  static #x;
+  static {
+    var [...{ 0: { #x: x = 1 }, ...z }] = [C];
+    result = { x, z };
+  }
+}
+expect(result).toStrictEqual({ x: 1, z: {} });
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest-only/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest-only/input.js
new file mode 100644
index 000000000000..0efba383ed22
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest-only/input.js
@@ -0,0 +1,8 @@
+let result;
+class C {
+  static #x;
+  static {
+    var [...{ 0: { #x: x = 1 }, ...z }] = [C];
+    result = { x, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest-only/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest-only/output.js
new file mode 100644
index 000000000000..7930e97e528f
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest-only/output.js
@@ -0,0 +1,16 @@
+const _excluded = ["0"];
+let result;
+
+class C {
+  static #x;
+  static {
+    var [..._p] = [C],
+        _m = _p[0].#x,
+        x = _m === void 0 ? 1 : _m,
+        z = babelHelpers.objectWithoutProperties(_p, _excluded);
+    result = {
+      x,
+      z
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest/exec.js
new file mode 100644
index 000000000000..216a27c621bf
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest/exec.js
@@ -0,0 +1,9 @@
+let result;
+class C {
+  static #x;
+  static {
+    var [{ #x: x = 1 }, ...z] = [C];
+    result = { x, z };
+  }
+}
+expect(result).toStrictEqual({ x: 1, z: [] });
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest/input.js
new file mode 100644
index 000000000000..7f0e8f3446f3
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest/input.js
@@ -0,0 +1,6 @@
+class C {
+  static #x;
+  static {
+    var [{ #x: x = 1 }, ...z] = [C];
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest/output.js
new file mode 100644
index 000000000000..203a6d1b1fc3
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/array-rest/output.js
@@ -0,0 +1,9 @@
+class C {
+  static #x;
+  static {
+    var [_p, ..._p2] = [C],
+        _m = _p.#x,
+        x = _m === void 0 ? 1 : _m,
+        z = _p2;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/basic/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/basic/exec.js
new file mode 100644
index 000000000000..cbee2112f773
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/basic/exec.js
@@ -0,0 +1,9 @@
+let result;
+class C {
+  static #x;
+  static {
+    var { a = 1, #x: x = 2, b = 3 } = C;
+    result = { a, x, b };
+  }
+}
+expect(result).toStrictEqual({ a: 1, x: 2, b: 3 });
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/basic/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/basic/input.js
new file mode 100644
index 000000000000..0ed7639bb2c8
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/basic/input.js
@@ -0,0 +1,6 @@
+class C {
+  static #x;
+  static {
+    var { a = 1, #x: x = 2, b = 3 } = C;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/basic/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/basic/output.js
new file mode 100644
index 000000000000..768092799091
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/basic/output.js
@@ -0,0 +1,13 @@
+class C {
+  static #x;
+  static {
+    var {
+      a = 1
+    } = C,
+        _m = C.#x,
+        x = _m === void 0 ? 2 : _m,
+        {
+      b = 3
+    } = C;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested-under-array-pattern/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested-under-array-pattern/exec.js
new file mode 100644
index 000000000000..026ddd6c82a8
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested-under-array-pattern/exec.js
@@ -0,0 +1,13 @@
+class C {
+  static #x = "x";
+  static #y = [];
+  static #z;
+  static self = C;
+  static #self() { return C }
+  static {
+    var [{ #x: x } = C.self, { #y: [,{ #z: y = C.#self() } = C.self ] },,z = y.#y] = [this,this];
+    expect(x).toBe("x");
+    expect(y).toBe(C);
+    expect(z).toStrictEqual([]);
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested-under-array-pattern/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested-under-array-pattern/input.js
new file mode 100644
index 000000000000..7570c494dd96
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested-under-array-pattern/input.js
@@ -0,0 +1,10 @@
+class C {
+  static #x = "x";
+  static #y = [];
+  static #z;
+  static self = C;
+  static #self() { return C }
+  static {
+    var [{ #x: x } = C.self, { #y: [,{ #z: y = C.#self() } = C.self ] },,z = y.#y] = [this,this];
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested-under-array-pattern/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested-under-array-pattern/output.js
new file mode 100644
index 000000000000..634cc2709bd9
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested-under-array-pattern/output.js
@@ -0,0 +1,19 @@
+class C {
+  static #x = "x";
+  static #y = [];
+  static #z;
+  static self = C;
+
+  static #self() {
+    return C;
+  }
+
+  static {
+    var [_p, _p2,, _p3] = [this, this],
+        x = (_p === void 0 ? C.self : _p).#x,
+        [, _p4] = _p2.#y,
+        _m = (_p4 === void 0 ? C.self : _p4).#z,
+        y = _m === void 0 ? C.#self() : _m,
+        z = _p3 === void 0 ? y.#y : _p3;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested/exec.js
new file mode 100644
index 000000000000..504cee587e65
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested/exec.js
@@ -0,0 +1,21 @@
+let result;
+class C {
+  static #y = "y";
+  static #z = "self";
+  static #x;
+  static b = "b";
+  static self = C;
+  static #self = C;
+  static {
+    let cloned;
+    var { #x: { [C.#z]: { b, #x: y = (C.b = "bb", C.#self.#y) }, #x: yy = (delete C.self, { ...cloned } = C, C.#y = "yy") } = C.#self, #y: yy2 } = C;
+    result = { b, y, yy, cloned, yy2 };
+  }
+}
+expect(result).toStrictEqual({
+  b: "b",
+  y: "y",
+  yy: "yy",
+  cloned: { b: "bb" },
+  yy2: "yy"
+})
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested/input.js
new file mode 100644
index 000000000000..50fe617b26cc
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested/input.js
@@ -0,0 +1,12 @@
+class C {
+  static #y = "y";
+  static #z = "self";
+  static #x;
+  static b = "b";
+  static self = C;
+  static #self = C;
+  static {
+    let cloned;
+    var { #x: { [C.#z]: { b, #x: y = (C.b = "bb", C.#self.#y) }, #x: yy = (delete C.self, { ...cloned } = C, C.#y = "yy") } = C.#self, #y: yy2 } = C;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested/output.js
new file mode 100644
index 000000000000..77f9a4a16296
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/nested/output.js
@@ -0,0 +1,25 @@
+class C {
+  static #y = "y";
+  static #z = "self";
+  static #x;
+  static b = "b";
+  static self = C;
+  static #self = C;
+  static {
+    let cloned;
+
+    var _m = C.#x,
+        _m2 = _m === void 0 ? C.#self : _m,
+        _m3 = _m2[C.#z],
+        {
+      b
+    } = _m3,
+        _m4 = _m3.#x,
+        y = _m4 === void 0 ? (C.b = "bb", C.#self.#y) : _m4,
+        _m5 = _m2.#x,
+        yy = _m5 === void 0 ? (delete C.self, ({ ...cloned
+    } = C), C.#y = "yy") : _m5,
+        yy2 = C.#y;
+
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/non-identifier-keys/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/non-identifier-keys/input.js
new file mode 100644
index 000000000000..fc5b7e36b72c
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/non-identifier-keys/input.js
@@ -0,0 +1,6 @@
+class C {
+  static #x;
+  static {
+    var { "0": { #x: w }, 1: { #x: x }, 2n: {#x: y}, 3m: {#x: z} } = [C, C, C, C];
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/non-identifier-keys/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/non-identifier-keys/options.json
new file mode 100644
index 000000000000..5e85d3896305
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/non-identifier-keys/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["proposal-destructuring-private", "syntax-decimal"],
+  "minNodeVersion": "16.11.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/non-identifier-keys/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/non-identifier-keys/output.js
new file mode 100644
index 000000000000..0579a8964deb
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/non-identifier-keys/output.js
@@ -0,0 +1,10 @@
+class C {
+  static #x;
+  static {
+    var _m = [C, C, C, C],
+        w = _m["0"].#x,
+        x = _m[1].#x,
+        y = _m[2n].#x,
+        z = _m[3m].#x;
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-keys/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-keys/exec.js
new file mode 100644
index 000000000000..4c238f56809a
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-keys/exec.js
@@ -0,0 +1,15 @@
+let result;
+class C {
+  static #x = "#x";
+  static y = "y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { #x: x, y, ...z } = C;
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  x: "#x", y: "y", z: { a: "a", b: "b", c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-keys/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-keys/input.js
new file mode 100644
index 000000000000..d8aa33d3efd1
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-keys/input.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static #x = "#x";
+  static y = "y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { #x: x, y, ...z } = C;
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-keys/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-keys/output.js
new file mode 100644
index 000000000000..f213c40bd329
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-keys/output.js
@@ -0,0 +1,21 @@
+let result;
+
+class C {
+  static #x = "#x";
+  static y = "y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var x = C.#x,
+        {
+      y,
+      ...z
+    } = C;
+    result = {
+      x,
+      y,
+      z
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-private-keys/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-private-keys/exec.js
new file mode 100644
index 000000000000..109bcfba54aa
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-private-keys/exec.js
@@ -0,0 +1,15 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { #x: x, #y: y, ...z } = C;
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  x: "#x", y: "#y", z: { a: "a", b: "b", c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-private-keys/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-private-keys/input.js
new file mode 100644
index 000000000000..30e7783da1b1
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-private-keys/input.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { #x: x, #y: y, ...z } = C;
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-private-keys/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-private-keys/output.js
new file mode 100644
index 000000000000..612e5fac9d45
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-and-private-keys/output.js
@@ -0,0 +1,20 @@
+let result;
+
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var x = C.#x,
+        y = C.#y,
+        { ...z
+    } = C;
+    result = {
+      x,
+      y,
+      z
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-under-private/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-under-private/exec.js
new file mode 100644
index 000000000000..57bd774a7c43
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-under-private/exec.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static x = "x";
+  static y = "y";
+  static z = "z";
+  static #x = C;
+  static {
+    var { x, #x: { y, ...z } } = C;
+    result = { x, y, z };
+  }
+}
+expect(result).toStrictEqual({ x: "x", y: "y", z: { x: "x", z: "z" } })
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-under-private/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-under-private/input.js
new file mode 100644
index 000000000000..abbe3dd5d8f5
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-under-private/input.js
@@ -0,0 +1,11 @@
+let result;
+class C {
+  static x = "x";
+  static y = "y";
+  static z = "z";
+  static #x = C;
+  static {
+    var { x, #x: { y, ...z } } = C;
+    result = { x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-under-private/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-under-private/output.js
new file mode 100644
index 000000000000..8f3720bacca2
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest-under-private/output.js
@@ -0,0 +1,22 @@
+let result;
+
+class C {
+  static x = "x";
+  static y = "y";
+  static z = "z";
+  static #x = C;
+  static {
+    var {
+      x
+    } = C,
+        {
+      y,
+      ...z
+    } = C.#x;
+    result = {
+      x,
+      y,
+      z
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest/exec.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest/exec.js
new file mode 100644
index 000000000000..53ee397c5820
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest/exec.js
@@ -0,0 +1,15 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { [C.a]: a, #x: x, [C.b]: b, #y: y, ...z } = C;
+    result = { a, b, x, y, z };
+  }
+}
+expect(result).toStrictEqual({
+  a: "a", b: "b", x: "#x", y: "#y", z: { c: "c" }
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest/input.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest/input.js
new file mode 100644
index 000000000000..bffc7a5ee2b4
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest/input.js
@@ -0,0 +1,12 @@
+let result;
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var { [C.a]: a, #x: x, [C.b]: b, #y: y, ...z } = C;
+    result = { a, b, x, y, z };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest/output.js b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest/output.js
new file mode 100644
index 000000000000..6a40c624b11c
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/object-rest/output.js
@@ -0,0 +1,29 @@
+let result;
+
+class C {
+  static #x = "#x";
+  static #y = "#y";
+  static a = "a";
+  static b = "b";
+  static c = "c";
+  static {
+    var _m, _m2;
+
+    var {
+      [_m = C.a]: a
+    } = C,
+        x = C.#x,
+        {
+      [_m2 = C.b]: b
+    } = C,
+        y = C.#y,
+        z = babelHelpers.objectWithoutProperties(C, [_m, _m2].map(babelHelpers.toPropertyKey));
+    result = {
+      a,
+      b,
+      x,
+      y,
+      z
+    };
+  }
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/options.json b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/options.json
new file mode 100644
index 000000000000..b671b8bdab63
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/fixtures/variable-declaration/options.json
@@ -0,0 +1,4 @@
+{
+  "plugins": ["proposal-destructuring-private"],
+  "minNodeVersion": "16.11.0"
+}
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/index.js b/packages/babel-plugin-proposal-destructuring-private/test/index.js
new file mode 100644
index 000000000000..21a55ce6b5e7
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/index.js
@@ -0,0 +1,3 @@
+import runner from "@babel/helper-plugin-test-runner";
+
+runner(import.meta.url);
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/package.json b/packages/babel-plugin-proposal-destructuring-private/test/package.json
new file mode 100644
index 000000000000..5ffd9800b97c
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/package.json
@@ -0,0 +1 @@
+{ "type": "module" }
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/plugin-ordering.js b/packages/babel-plugin-proposal-destructuring-private/test/plugin-ordering.js
new file mode 100644
index 000000000000..64ace639375e
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/plugin-ordering.js
@@ -0,0 +1,28 @@
+import babel from "@babel/core";
+import proposalDestructuringPrivate from "../lib/index.js";
+
+describe("plugin ordering", () => {
+  it("should work when @babel/plugin-proposal-destructuring-private is after class features plugin", () => {
+    const source = `class Foo {
+      static #x = 1;
+      static {
+        const {#x: x } = Foo;
+      };
+    }
+    `;
+    expect(
+      () =>
+        babel.transformSync(source, {
+          filename: "example.js",
+          highlightCode: false,
+          configFile: false,
+          babelrc: false,
+          plugins: [
+            "@babel/plugin-proposal-class-properties",
+            "@babel/plugin-proposal-class-static-block",
+            proposalDestructuringPrivate,
+          ],
+        }).code,
+    ).not.toThrow();
+  });
+});
diff --git a/packages/babel-plugin-proposal-destructuring-private/test/util.skip-bundled.js b/packages/babel-plugin-proposal-destructuring-private/test/util.skip-bundled.js
new file mode 100644
index 000000000000..5e50a88acb64
--- /dev/null
+++ b/packages/babel-plugin-proposal-destructuring-private/test/util.skip-bundled.js
@@ -0,0 +1,77 @@
+import babel from "@babel/core";
+import { traversePattern, privateKeyPathIterator } from "../lib/util.js";
+const { isObjectProperty, isPrivateName } = babel.types;
+
+const { parseSync, traverse } = babel;
+
+function wrapSourceInClassEnvironment(input) {
+  const usedPrivateNames = new Set();
+  let matched;
+  const re = /#[\w_]+/g;
+  while ((matched = re.exec(input)) !== null) {
+    usedPrivateNames.add(matched[0]);
+  }
+  let result = "(class {";
+  for (const name of usedPrivateNames) {
+    result += name + ";";
+  }
+  result += "m(){ " + input + "}})";
+  return result;
+}
+
+function getPath(input, parserOpts = { plugins: ["destructuringPrivate"] }) {
+  let targetPath;
+  traverse(
+    parseSync(wrapSourceInClassEnvironment(input), {
+      parserOpts,
+      filename: "example.js",
+      configFile: false,
+    }),
+    {
+      Pattern(path) {
+        targetPath = path;
+        path.stop();
+      },
+    },
+  );
+  return targetPath;
+}
+
+describe("traversePattern", () => {
+  it("should visit property with private keys in depth-first order", () => {
+    const patternPath = getPath(
+      "const { #a: { #b: b, c, ...d }, e: [{ #c: [{ #d: { #c: g } }] }, ...{ #b: h }], #a: i } = obj;",
+    );
+    const keys = [
+      ...traversePattern(patternPath.node, function* (node) {
+        if (isObjectProperty(node)) {
+          const propertyKey = node.key;
+          if (isPrivateName(propertyKey)) {
+            yield propertyKey.id.name;
+          }
+        }
+      }),
+    ];
+
+    expect(keys).toEqual(["a", "b", "c", "d", "c", "b", "a"]);
+  });
+});
+
+describe("privateKeyPathIterator", () => {
+  const indexPaths = [
+    ...privateKeyPathIterator(
+      getPath(
+        "const { #a: { a, #b: b, c, ...d }, e: [{ #c: [{ d: e, #d: { #c: f } }] }, ...{ #b: g }], #a: i } = obj;",
+      ).node,
+    ),
+  ].map(indexPath => indexPath.join(","));
+  expect(indexPaths).toEqual([
+    "0",
+    "0,1",
+    "1,0,0",
+    "1,0,0,0,1",
+    "1,0,0,0,1,0",
+    "1,1,0,0",
+    "2",
+  ]);
+});
diff --git a/packages/babel-plugin-proposal-object-rest-spread/src/index.ts b/packages/babel-plugin-proposal-object-rest-spread/src/index.ts
index caf1c6baa1e6..d0acd5b93711 100644
--- a/packages/babel-plugin-proposal-object-rest-spread/src/index.ts
+++ b/packages/babel-plugin-proposal-object-rest-spread/src/index.ts
@@ -127,6 +127,7 @@ export default declare((api, opts: Options) => {
           ),
         );
       } else {
+        // @ts-expect-error private name has been handled by destructuring-private
         keys.push(t.cloneNode(prop.key));
         allLiteral = false;
       }
@@ -143,7 +144,8 @@ export default declare((api, opts: Options) => {
   ) {
     const impureComputedPropertyDeclarators: t.VariableDeclarator[] = [];
     for (const propPath of properties) {
-      const key = propPath.get("key");
+      // PrivateName is handled in destructuring-private plugin
+      const key = propPath.get("key") as NodePath<t.Expression>;
       if (propPath.node.computed && !key.isPure()) {
         const name = scope.generateUidBasedOnNode(key.node);
         const declarator = t.variableDeclarator(t.identifier(name), key.node);
diff --git a/packages/babel-plugin-syntax-destructuring-private/package.json b/packages/babel-plugin-syntax-destructuring-private/package.json
index c0fdc720461e..cbe465a74d45 100644
--- a/packages/babel-plugin-syntax-destructuring-private/package.json
+++ b/packages/babel-plugin-syntax-destructuring-private/package.json
@@ -13,10 +13,6 @@
     "access": "public"
   },
   "main": "./lib/index.js",
-  "exports": {
-    ".": "./lib/index.js",
-    "./package.json": "./package.json"
-  },
   "keywords": [
     "babel-plugin"
   ],
@@ -29,5 +25,17 @@
   "engines": {
     "node": ">=6.9.0"
   },
-  "author": "The Babel Team (https://babel.dev/team)"
+  "author": "The Babel Team (https://babel.dev/team)",
+  "conditions": {
+    "BABEL_8_BREAKING": [
+      null,
+      {
+        "exports": null
+      }
+    ]
+  },
+  "exports": {
+    ".": "./lib/index.js",
+    "./package.json": "./package.json"
+  }
 }
diff --git a/packages/babel-plugin-transform-destructuring/src/index.ts b/packages/babel-plugin-transform-destructuring/src/index.ts
index 0726446b0053..5adeda9e870f 100644
--- a/packages/babel-plugin-transform-destructuring/src/index.ts
+++ b/packages/babel-plugin-transform-destructuring/src/index.ts
@@ -4,7 +4,9 @@ import {
   DestructuringTransformer,
   convertVariableDeclaration,
   convertAssignmentExpression,
+  unshiftForXStatementBody,
 } from "./util";
+export { buildObjectExcludingKeys, unshiftForXStatementBody } from "./util";
 
 /**
  * Test if a VariableDeclaration's declarations contains any Patterns.
@@ -80,17 +82,22 @@ export default declare((api, options: Options) => {
 
           path.ensureBlock();
           const statementBody = (node.body as t.BlockStatement).body;
-
+          const nodes = [];
+          // todo: the completion of a for statement can only be observed from
+          // a do block (or eval that we don't support),
+          // but the new do-expression proposal plans to ban iteration ends in the
+          // do block, maybe we can get rid of this
           if (statementBody.length === 0 && path.isCompletionRecord()) {
-            statementBody.unshift(
-              t.expressionStatement(scope.buildUndefinedNode()),
-            );
+            nodes.unshift(t.expressionStatement(scope.buildUndefinedNode()));
           }
 
-          statementBody.unshift(
-            t.expressionStatement(t.assignmentExpression("=", left, temp)),
+          nodes.unshift(
+            t.expressionStatement(
+              t.assignmentExpression("=", left, t.cloneNode(temp)),
+            ),
           );
 
+          unshiftForXStatementBody(path, nodes);
           scope.crawl();
           return;
         }
@@ -120,11 +127,7 @@ export default declare((api, options: Options) => {
 
         destructuring.init(pattern, key);
 
-        path.ensureBlock();
-
-        const block = node.body;
-        // @ts-expect-error: ensureBlock ensures that node.body is a BlockStatement
-        block.body = nodes.concat(block.body);
+        unshiftForXStatementBody(path, nodes);
         scope.crawl();
       },
 
diff --git a/packages/babel-plugin-transform-destructuring/src/util.ts b/packages/babel-plugin-transform-destructuring/src/util.ts
index a973b5600904..5f22b4a86ee5 100644
--- a/packages/babel-plugin-transform-destructuring/src/util.ts
+++ b/packages/babel-plugin-transform-destructuring/src/util.ts
@@ -3,6 +3,27 @@ import type { File } from "@babel/core";
 import type { Scope, NodePath } from "@babel/traverse";
 import type { TraversalAncestors } from "@babel/types";
 
+export function unshiftForXStatementBody(
+  statementPath: NodePath<t.ForXStatement>,
+  newStatements: t.Statement[],
+) {
+  statementPath.ensureBlock();
+  const { scope, node } = statementPath;
+  const bodyScopeBindings = statementPath.get("body").scope.bindings;
+  const hasShadowedBlockScopedBindings = Object.keys(bodyScopeBindings).some(
+    name => scope.hasBinding(name),
+  );
+
+  if (hasShadowedBlockScopedBindings) {
+    // handle shadowed variables referenced in computed keys:
+    // var a = 0;for (const { #x: x, [a++]: y } of z) { const a = 1; }
+    node.body = t.blockStatement([...newStatements, node.body]);
+  } else {
+    // @ts-ignore statementPath.ensureBlock() has been called, node.body is always a BlockStatement
+    node.body.body.unshift(...newStatements);
+  }
+}
+
 /**
  * Test if an ArrayPattern's elements contain any RestElements.
  */
@@ -290,7 +311,10 @@ export class DestructuringTransformer {
         const key = prop.key;
         if (prop.computed && !this.scope.isPure(key)) {
           const name = this.scope.generateUidIdentifierBasedOnNode(key);
-          this.nodes.push(this.buildVariableDeclaration(name, key));
+          this.nodes.push(
+            //@ts-expect-error PrivateName has been handled by destructuring-private
+            this.buildVariableDeclaration(name, key),
+          );
           if (!copiedPattern) {
             copiedPattern = pattern = {
               ...pattern,
@@ -630,7 +654,7 @@ export function convertAssignmentExpression(
   objectRestNoSymbols: boolean,
   useBuiltIns: boolean,
 ) {
-  const { node, scope } = path;
+  const { node, scope, parentPath } = path;
 
   const nodes = [];
 
@@ -646,7 +670,11 @@ export function convertAssignmentExpression(
   });
 
   let ref: t.Identifier | void;
-  if (path.isCompletionRecord() || !path.parentPath.isExpressionStatement()) {
+  if (
+    (!parentPath.isExpressionStatement() &&
+      !parentPath.isSequenceExpression()) ||
+    path.isCompletionRecord()
+  ) {
     ref = scope.generateUidIdentifierBasedOnNode(node.right, "ref");
 
     nodes.push(
@@ -661,7 +689,7 @@ export function convertAssignmentExpression(
   destructuring.init(node.left, ref || node.right);
 
   if (ref) {
-    if (path.parentPath.isArrowFunctionExpression()) {
+    if (parentPath.isArrowFunctionExpression()) {
       path.replaceWith(t.blockStatement([]));
       nodes.push(t.returnStatement(t.cloneNode(ref)));
     } else {
diff --git a/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/assignment-sequence-expression-completion-record/input.js b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/assignment-sequence-expression-completion-record/input.js
new file mode 100644
index 000000000000..8986163f9364
--- /dev/null
+++ b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/assignment-sequence-expression-completion-record/input.js
@@ -0,0 +1,2 @@
+var x, y;
+([x, y] = [1, 2], y);
diff --git a/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/assignment-sequence-expression-completion-record/output.js b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/assignment-sequence-expression-completion-record/output.js
new file mode 100644
index 000000000000..0048baa438b9
--- /dev/null
+++ b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/assignment-sequence-expression-completion-record/output.js
@@ -0,0 +1,2 @@
+var x, y;
+(x = 1, y = 2), y;
diff --git a/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/exec.js b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/exec.js
new file mode 100644
index 000000000000..e3f8f6f30ea2
--- /dev/null
+++ b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/exec.js
@@ -0,0 +1,8 @@
+var O = {
+  a: "a"
+}
+const a = "a";
+for (const { [a]: _ } of [O]) { const a = "A"; }
+
+var _;
+for ({ [a]: _ } of [O]) { const a = "A"; }
diff --git a/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/input.js b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/input.js
new file mode 100644
index 000000000000..e3f8f6f30ea2
--- /dev/null
+++ b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/input.js
@@ -0,0 +1,8 @@
+var O = {
+  a: "a"
+}
+const a = "a";
+for (const { [a]: _ } of [O]) { const a = "A"; }
+
+var _;
+for ({ [a]: _ } of [O]) { const a = "A"; }
diff --git a/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/options.json b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/options.json
new file mode 100644
index 000000000000..84e28c07f51e
--- /dev/null
+++ b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["transform-destructuring"]
+}
diff --git a/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/output.js b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/output.js
new file mode 100644
index 000000000000..23908dee29eb
--- /dev/null
+++ b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/for-of-shadowed-block-scoped/output.js
@@ -0,0 +1,20 @@
+var O = {
+  a: "a"
+};
+const a = "a";
+
+for (const _ref of [O]) {
+  const _ = _ref[a];
+  {
+    const a = "A";
+  }
+}
+
+var _;
+
+for (var _ref2 of [O]) {
+  _ = _ref2[a];
+  {
+    const a = "A";
+  }
+}
diff --git a/packages/babel-plugin-transform-proto-to-assign/src/index.ts b/packages/babel-plugin-transform-proto-to-assign/src/index.ts
index 7bfce080e361..bd29c5933ff2 100644
--- a/packages/babel-plugin-transform-proto-to-assign/src/index.ts
+++ b/packages/babel-plugin-transform-proto-to-assign/src/index.ts
@@ -12,7 +12,6 @@ export default declare(api => {
     const left = node;
     return (
       t.isMemberExpression(left) &&
-      // @ts-expect-error todo(flow->ts): property can be t.PrivateName
       t.isLiteral(t.toComputedKey(left, left.property), { value: "__proto__" })
     );
   }
diff --git a/packages/babel-plugin-transform-typescript/src/index.ts b/packages/babel-plugin-transform-typescript/src/index.ts
index ff202ca01231..b881f48e9151 100644
--- a/packages/babel-plugin-transform-typescript/src/index.ts
+++ b/packages/babel-plugin-transform-typescript/src/index.ts
@@ -166,36 +166,35 @@ export default declare((api, opts: Options) => {
       // property is only added once. This is necessary for cases like
       // using `transform-classes`, which causes this visitor to run
       // twice.
-      const parameterProperties = [];
-      for (const param of path.node.params) {
-        if (
-          param.type === "TSParameterProperty" &&
-          !PARSED_PARAMS.has(param.parameter)
-        ) {
-          PARSED_PARAMS.add(param.parameter);
-          parameterProperties.push(param.parameter);
-        }
-      }
-
-      if (parameterProperties.length) {
-        const assigns = parameterProperties.map(p => {
+      const assigns = [];
+      const { scope } = path;
+      for (const paramPath of path.get("params")) {
+        const param = paramPath.node;
+        if (param.type === "TSParameterProperty") {
+          const parameter = param.parameter;
+          if (PARSED_PARAMS.has(parameter)) continue;
+          PARSED_PARAMS.add(parameter);
           let id;
-          if (t.isIdentifier(p)) {
-            id = p;
-          } else if (t.isAssignmentPattern(p) && t.isIdentifier(p.left)) {
-            id = p.left;
+          if (t.isIdentifier(parameter)) {
+            id = parameter;
+          } else if (
+            t.isAssignmentPattern(parameter) &&
+            t.isIdentifier(parameter.left)
+          ) {
+            id = parameter.left;
           } else {
-            throw path.buildCodeFrameError(
+            throw paramPath.buildCodeFrameError(
               "Parameter properties can not be destructuring patterns.",
             );
           }
+          assigns.push(template.statement.ast`
+          this.${t.cloneNode(id)} = ${t.cloneNode(id)}`);
 
-          return template.statement.ast`
-              this.${t.cloneNode(id)} = ${t.cloneNode(id)}`;
-        });
-
-        injectInitialization(classPath, path, assigns);
+          paramPath.replaceWith(paramPath.get("parameter"));
+          scope.registerBinding("param", paramPath);
+        }
       }
+      injectInitialization(classPath, path, assigns);
     },
   };
 
@@ -502,7 +501,7 @@ export default declare((api, opts: Options) => {
       },
 
       Function(path) {
-        const { node, scope } = path;
+        const { node } = path;
         if (node.typeParameters) node.typeParameters = null;
         if (node.returnType) node.returnType = null;
 
@@ -510,17 +509,6 @@ export default declare((api, opts: Options) => {
         if (params.length > 0 && t.isIdentifier(params[0], { name: "this" })) {
           params.shift();
         }
-
-        // We replace `TSParameterProperty` here so that transforms that
-        // rely on a `Function` visitor to deal with arguments, like
-        // `transform-parameters`, work properly.
-        const paramsPath = path.get("params");
-        for (const p of paramsPath) {
-          if (p.type === "TSParameterProperty") {
-            p.replaceWith(p.get("parameter"));
-            scope.registerBinding("param", p);
-          }
-        }
       },
 
       TSModuleDeclaration(path) {
diff --git a/packages/babel-plugin-transform-typescript/test/fixtures/class/parameter-properties-with-class/output.js b/packages/babel-plugin-transform-typescript/test/fixtures/class/parameter-properties-with-class/output.js
index 47b225e90906..fc4fb9cfe297 100644
--- a/packages/babel-plugin-transform-typescript/test/fixtures/class/parameter-properties-with-class/output.js
+++ b/packages/babel-plugin-transform-typescript/test/fixtures/class/parameter-properties-with-class/output.js
@@ -1,10 +1,6 @@
-let Person = /*#__PURE__*/function () {
+let Person = /*#__PURE__*/babelHelpers.createClass(function Person(name) {
   "use strict";
 
-  function Person(name) {
-    babelHelpers.classCallCheck(this, Person);
-    this.name = name;
-  }
-
-  return babelHelpers.createClass(Person);
-}();
+  babelHelpers.classCallCheck(this, Person);
+  this.name = name;
+});
diff --git a/packages/babel-standalone/package.json b/packages/babel-standalone/package.json
index 3dd50d579d98..0806cf0ac369 100644
--- a/packages/babel-standalone/package.json
+++ b/packages/babel-standalone/package.json
@@ -14,6 +14,7 @@
     "@babel/plugin-proposal-class-properties": "workspace:^",
     "@babel/plugin-proposal-class-static-block": "workspace:^",
     "@babel/plugin-proposal-decorators": "workspace:^",
+    "@babel/plugin-proposal-destructuring-private": "workspace:^",
     "@babel/plugin-proposal-do-expressions": "workspace:^",
     "@babel/plugin-proposal-dynamic-import": "workspace:^",
     "@babel/plugin-proposal-export-default-from": "workspace:^",
diff --git a/packages/babel-standalone/scripts/pluginConfig.json b/packages/babel-standalone/scripts/pluginConfig.json
index 4225511093b8..11bb05332ab1 100644
--- a/packages/babel-standalone/scripts/pluginConfig.json
+++ b/packages/babel-standalone/scripts/pluginConfig.json
@@ -25,6 +25,7 @@
   "proposal-class-properties",
   "proposal-class-static-block",
   "proposal-decorators",
+  "proposal-destructuring-private",
   "proposal-do-expressions",
   "proposal-dynamic-import",
   "proposal-export-default-from",
diff --git a/packages/babel-standalone/src/generated/plugins.ts b/packages/babel-standalone/src/generated/plugins.ts
index 724211513a81..55d24bbdad1f 100644
--- a/packages/babel-standalone/src/generated/plugins.ts
+++ b/packages/babel-standalone/src/generated/plugins.ts
@@ -28,6 +28,7 @@ import proposalAsyncGeneratorFunctions from "@babel/plugin-proposal-async-genera
 import proposalClassProperties from "@babel/plugin-proposal-class-properties";
 import proposalClassStaticBlock from "@babel/plugin-proposal-class-static-block";
 import proposalDecorators from "@babel/plugin-proposal-decorators";
+import proposalDestructuringPrivate from "@babel/plugin-proposal-destructuring-private";
 import proposalDoExpressions from "@babel/plugin-proposal-do-expressions";
 import proposalDynamicImport from "@babel/plugin-proposal-dynamic-import";
 import proposalExportDefaultFrom from "@babel/plugin-proposal-export-default-from";
@@ -124,6 +125,7 @@ export {
   proposalClassProperties,
   proposalClassStaticBlock,
   proposalDecorators,
+  proposalDestructuringPrivate,
   proposalDoExpressions,
   proposalDynamicImport,
   proposalExportDefaultFrom,
@@ -221,6 +223,7 @@ export const all: { [k: string]: any } = {
   "proposal-class-properties": proposalClassProperties,
   "proposal-class-static-block": proposalClassStaticBlock,
   "proposal-decorators": proposalDecorators,
+  "proposal-destructuring-private": proposalDestructuringPrivate,
   "proposal-do-expressions": proposalDoExpressions,
   "proposal-dynamic-import": proposalDynamicImport,
   "proposal-export-default-from": proposalExportDefaultFrom,
diff --git a/packages/babel-standalone/src/preset-stage-2.ts b/packages/babel-standalone/src/preset-stage-2.ts
index ca4e77c369d7..0ecb70562407 100644
--- a/packages/babel-standalone/src/preset-stage-2.ts
+++ b/packages/babel-standalone/src/preset-stage-2.ts
@@ -23,7 +23,7 @@ export default (_: any, opts: any = {}) => {
           decoratorsBeforeExport,
         },
       ],
-      babelPlugins.syntaxDestructuringPrivate,
+      babelPlugins.proposalDestructuringPrivate,
       [
         babelPlugins.proposalPipelineOperator,
         { proposal: pipelineProposal, topicToken: pipelineTopicToken },
diff --git a/packages/babel-standalone/test/preset-stage-1.test.js b/packages/babel-standalone/test/preset-stage-1.test.js
index b40159b77035..6e763f9e949c 100644
--- a/packages/babel-standalone/test/preset-stage-1.test.js
+++ b/packages/babel-standalone/test/preset-stage-1.test.js
@@ -62,5 +62,19 @@ const require = createRequire(import.meta.url);
       }).code;
       expect(output).toMatch("babelHelpers.applyDecs");
     });
+    it("should support private destructuring", () => {
+      const output = Babel.transform("class C { #x; m({ #x: x}) {} }", {
+        plugins: [["external-helpers", { helperVersion: "7.100.0" }]],
+        presets: [
+          [
+            "stage-1",
+            {
+              decoratorsVersion: "2021-12",
+            },
+          ],
+        ],
+      }).code;
+      expect(output).not.toContain("#x:");
+    });
   },
 );
diff --git a/packages/babel-traverse/src/path/introspection.ts b/packages/babel-traverse/src/path/introspection.ts
index e5f7e7b49368..e55c161f3ef8 100644
--- a/packages/babel-traverse/src/path/introspection.ts
+++ b/packages/babel-traverse/src/path/introspection.ts
@@ -135,10 +135,10 @@ export function isCompletionRecord(
   let first = true;
 
   do {
-    const container = path.container;
+    const { type, container } = path;
 
     // we're in a function so can't be a completion record
-    if (path.isFunction() && !first) {
+    if (!first && (path.isFunction() || type === "StaticBlock")) {
       return !!allowInsideFunction;
     }
 
@@ -149,7 +149,11 @@ export function isCompletionRecord(
     if (Array.isArray(container) && path.key !== container.length - 1) {
       return false;
     }
-  } while ((path = path.parentPath) && !path.isProgram());
+  } while (
+    (path = path.parentPath) &&
+    !path.isProgram() &&
+    !path.isDoExpression()
+  );
 
   return true;
 }
diff --git a/packages/babel-traverse/src/scope/index.ts b/packages/babel-traverse/src/scope/index.ts
index b96794f31710..444407f4f02c 100644
--- a/packages/babel-traverse/src/scope/index.ts
+++ b/packages/babel-traverse/src/scope/index.ts
@@ -1019,7 +1019,9 @@ export default class Scope {
   }) {
     let path = this.path;
 
-    if (!path.isBlockStatement() && !path.isProgram()) {
+    if (path.isPattern()) {
+      path = this.getPatternParent().path;
+    } else if (!path.isBlockStatement() && !path.isProgram()) {
       path = this.getBlockParent().path;
     }
 
@@ -1099,6 +1101,23 @@ export default class Scope {
     );
   }
 
+  /**
+   * Walk up from a pattern scope (function param initializer) until we hit a non-pattern scope,
+   * then returns its block parent
+   * @returns An ancestry scope whose path is a block parent
+   */
+  getPatternParent() {
+    let scope: Scope = this;
+    do {
+      if (!scope.path.isPattern()) {
+        return scope.getBlockParent();
+      }
+    } while ((scope = scope.parent.parent));
+    throw new Error(
+      "We couldn't find a BlockStatement, For, Switch, Function, Loop or Program...",
+    );
+  }
+
   /**
    * Walks the scope tree and gathers **all** bindings.
    */
diff --git a/packages/babel-traverse/test/scope.js b/packages/babel-traverse/test/scope.js
index 375089129e16..84961905a53c 100644
--- a/packages/babel-traverse/test/scope.js
+++ b/packages/babel-traverse/test/scope.js
@@ -902,5 +902,30 @@ describe("scope", () => {
       `);
       expect(program.scope.hasOwnBinding("class")).toBe(true);
     });
+    it("registers the new binding outside function when the path is a param initializer", () => {
+      const program = getPath("(a = f()) => {}");
+      const assignmentPattern = program.get("body.0.expression.params.0");
+      assignmentPattern.scope.push({ id: t.identifier("ref") });
+      expect(program.toString()).toMatchInlineSnapshot(`
+        "var ref;
+
+        (a = f()) => {};"
+      `);
+      expect(program.scope.hasOwnBinding("ref")).toBe(true);
+    });
+    it("registers the new binding outside class method when the path is a param initializer", () => {
+      const program = getPath("class C { m(a = f()) {} }");
+      const assignmentPattern = program.get("body.0.body.body.0.params.0");
+      assignmentPattern.scope.push({ id: t.identifier("ref") });
+      expect(program.toString()).toMatchInlineSnapshot(`
+        "var ref;
+
+        class C {
+          m(a = f()) {}
+
+        }"
+      `);
+      expect(program.scope.hasOwnBinding("ref")).toBe(true);
+    });
   });
 });
diff --git a/packages/babel-types/src/ast-types/generated/index.ts b/packages/babel-types/src/ast-types/generated/index.ts
index 6083ec271003..ac7c27b4f7b8 100644
--- a/packages/babel-types/src/ast-types/generated/index.ts
+++ b/packages/babel-types/src/ast-types/generated/index.ts
@@ -593,7 +593,14 @@ export interface ObjectMethod extends BaseNode {
 
 export interface ObjectProperty extends BaseNode {
   type: "ObjectProperty";
-  key: Expression | Identifier | StringLiteral | NumericLiteral;
+  key:
+    | Expression
+    | Identifier
+    | StringLiteral
+    | NumericLiteral
+    | BigIntLiteral
+    | DecimalLiteral
+    | PrivateName;
   value: Expression | PatternLike;
   computed: boolean;
   shorthand: boolean;
diff --git a/packages/babel-types/src/builders/generated/index.ts b/packages/babel-types/src/builders/generated/index.ts
index 062e659e3898..30870df8a9af 100644
--- a/packages/babel-types/src/builders/generated/index.ts
+++ b/packages/babel-types/src/builders/generated/index.ts
@@ -383,7 +383,14 @@ export function objectMethod(
   });
 }
 export function objectProperty(
-  key: t.Expression | t.Identifier | t.StringLiteral | t.NumericLiteral,
+  key:
+    | t.Expression
+    | t.Identifier
+    | t.StringLiteral
+    | t.NumericLiteral
+    | t.BigIntLiteral
+    | t.DecimalLiteral
+    | t.PrivateName,
   value: t.Expression | t.PatternLike,
   computed: boolean = false,
   shorthand: boolean = false,
diff --git a/packages/babel-types/src/converters/toComputedKey.ts b/packages/babel-types/src/converters/toComputedKey.ts
index 4db773ddb56d..9302c9302bdc 100644
--- a/packages/babel-types/src/converters/toComputedKey.ts
+++ b/packages/babel-types/src/converters/toComputedKey.ts
@@ -12,7 +12,7 @@ export default function toComputedKey(
     | t.MemberExpression
     | t.OptionalMemberExpression,
   // @ts-expect-error todo(flow->ts): maybe check the type of node before accessing .key and .property
-  key: t.Expression = node.key || node.property,
+  key: t.Expression | t.PrivateName = node.key || node.property,
 ) {
   if (!node.computed && isIdentifier(key)) key = stringLiteral(key.name);
 
diff --git a/packages/babel-types/src/definitions/core.ts b/packages/babel-types/src/definitions/core.ts
index a660422bd172..92591951cafd 100644
--- a/packages/babel-types/src/definitions/core.ts
+++ b/packages/babel-types/src/definitions/core.ts
@@ -833,6 +833,9 @@ defineType("ObjectProperty", {
           "Identifier",
           "StringLiteral",
           "NumericLiteral",
+          "BigIntLiteral",
+          "DecimalLiteral",
+          "PrivateName",
         );
         const computed = assertNodeType("Expression");
 
@@ -846,6 +849,9 @@ defineType("ObjectProperty", {
           "Identifier",
           "StringLiteral",
           "NumericLiteral",
+          "BigIntLiteral",
+          "DecimalLiteral",
+          "PrivateName",
         ];
         return validator;
       })(),
diff --git a/tsconfig.json b/tsconfig.json
index 6272d8c1625a..49d94006ce9f 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -43,6 +43,7 @@
     "./packages/babel-plugin-proposal-class-properties/src/**/*.ts",
     "./packages/babel-plugin-proposal-class-static-block/src/**/*.ts",
     "./packages/babel-plugin-proposal-decorators/src/**/*.ts",
+    "./packages/babel-plugin-proposal-destructuring-private/src/**/*.ts",
     "./packages/babel-plugin-proposal-do-expressions/src/**/*.ts",
     "./packages/babel-plugin-proposal-dynamic-import/src/**/*.ts",
     "./packages/babel-plugin-proposal-export-default-from/src/**/*.ts",
@@ -271,6 +272,9 @@
       "@babel/plugin-proposal-decorators": [
         "./packages/babel-plugin-proposal-decorators/src"
       ],
+      "@babel/plugin-proposal-destructuring-private": [
+        "./packages/babel-plugin-proposal-destructuring-private/src"
+      ],
       "@babel/plugin-proposal-do-expressions": [
         "./packages/babel-plugin-proposal-do-expressions/src"
       ],
diff --git a/yarn.lock b/yarn.lock
index 991f40179bf5..aa5fcca1306b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1304,6 +1304,23 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@babel/plugin-proposal-destructuring-private@workspace:^, @babel/plugin-proposal-destructuring-private@workspace:packages/babel-plugin-proposal-destructuring-private":
+  version: 0.0.0-use.local
+  resolution: "@babel/plugin-proposal-destructuring-private@workspace:packages/babel-plugin-proposal-destructuring-private"
+  dependencies:
+    "@babel/core": "workspace:^"
+    "@babel/helper-plugin-test-runner": "workspace:^"
+    "@babel/helper-plugin-utils": "workspace:^"
+    "@babel/plugin-syntax-destructuring-private": "workspace:^"
+    "@babel/plugin-transform-destructuring": "workspace:^"
+    "@babel/plugin-transform-parameters": "workspace:^"
+    "@babel/traverse": "workspace:^"
+    "@babel/types": "workspace:^"
+  peerDependencies:
+    "@babel/core": ^7.17.0
+  languageName: unknown
+  linkType: soft
+
 "@babel/plugin-proposal-do-expressions@workspace:^, @babel/plugin-proposal-do-expressions@workspace:packages/babel-plugin-proposal-do-expressions":
   version: 0.0.0-use.local
   resolution: "@babel/plugin-proposal-do-expressions@workspace:packages/babel-plugin-proposal-do-expressions"
@@ -3575,6 +3592,7 @@ __metadata:
     "@babel/plugin-proposal-class-properties": "workspace:^"
     "@babel/plugin-proposal-class-static-block": "workspace:^"
     "@babel/plugin-proposal-decorators": "workspace:^"
+    "@babel/plugin-proposal-destructuring-private": "workspace:^"
     "@babel/plugin-proposal-do-expressions": "workspace:^"
     "@babel/plugin-proposal-dynamic-import": "workspace:^"
     "@babel/plugin-proposal-export-default-from": "workspace:^"