diff --git a/packages/babel-core/package.json b/packages/babel-core/package.json
index 3143cdbe091d..4baf42a83075 100644
--- a/packages/babel-core/package.json
+++ b/packages/babel-core/package.json
@@ -59,7 +59,7 @@
     "convert-source-map": "^1.7.0",
     "debug": "^4.1.0",
     "gensync": "^1.0.0-beta.2",
-    "json5": "^2.2.1",
+    "json5": "^2.2.2",
     "semver": "condition:BABEL_8_BREAKING ? ^7.3.4 : ^6.3.0"
   },
   "devDependencies": {
diff --git a/packages/babel-helper-create-class-features-plugin/package.json b/packages/babel-helper-create-class-features-plugin/package.json
index f7af9f264318..76ebd55a2db6 100644
--- a/packages/babel-helper-create-class-features-plugin/package.json
+++ b/packages/babel-helper-create-class-features-plugin/package.json
@@ -24,6 +24,7 @@
     "@babel/helper-member-expression-to-functions": "workspace:^",
     "@babel/helper-optimise-call-expression": "workspace:^",
     "@babel/helper-replace-supers": "workspace:^",
+    "@babel/helper-skip-transparent-expression-wrappers": "workspace:^",
     "@babel/helper-split-export-declaration": "workspace:^"
   },
   "peerDependencies": {
diff --git a/packages/babel-helper-create-class-features-plugin/src/fields.ts b/packages/babel-helper-create-class-features-plugin/src/fields.ts
index af304cd4fb05..e6580367716a 100644
--- a/packages/babel-helper-create-class-features-plugin/src/fields.ts
+++ b/packages/babel-helper-create-class-features-plugin/src/fields.ts
@@ -10,6 +10,7 @@ import type {
 } from "@babel/helper-member-expression-to-functions";
 import optimiseCall from "@babel/helper-optimise-call-expression";
 import annotateAsPure from "@babel/helper-annotate-as-pure";
+import { isTransparentExprWrapper } from "@babel/helper-skip-transparent-expression-wrappers";
 
 import * as ts from "./typescript";
 
@@ -890,6 +891,15 @@ type ReplaceThisState = {
 const thisContextVisitor = traverse.visitors.merge<ReplaceThisState>([
   {
     ThisExpression(path, state) {
+      // Replace `delete this` with `true`
+      const parent = path.findParent(
+        path => !isTransparentExprWrapper(path.node),
+      );
+      if (t.isUnaryExpression(parent.node, { operator: "delete" })) {
+        path.parentPath.replaceWith(t.booleanLiteral(true));
+        return;
+      }
+
       state.needsClassRef = true;
       path.replaceWith(t.cloneNode(state.classRef));
     },
diff --git a/packages/babel-plugin-proposal-class-properties/test/fixtures/public/delete-this/exec.js b/packages/babel-plugin-proposal-class-properties/test/fixtures/public/delete-this/exec.js
new file mode 100644
index 000000000000..df366e052065
--- /dev/null
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/public/delete-this/exec.js
@@ -0,0 +1,7 @@
+class Foo {
+  x = delete this;
+  static x = delete this;
+}
+
+expect(new Foo().x).toBe(true);
+expect(Foo.x).toBe(true);
diff --git a/packages/babel-plugin-proposal-class-properties/test/fixtures/public/delete-this/input.js b/packages/babel-plugin-proposal-class-properties/test/fixtures/public/delete-this/input.js
new file mode 100644
index 000000000000..135489233d33
--- /dev/null
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/public/delete-this/input.js
@@ -0,0 +1,4 @@
+class Foo {
+  x = delete this;
+  static x = delete this;
+}
diff --git a/packages/babel-plugin-proposal-class-properties/test/fixtures/public/delete-this/output.js b/packages/babel-plugin-proposal-class-properties/test/fixtures/public/delete-this/output.js
new file mode 100644
index 000000000000..d6e082c07a0f
--- /dev/null
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/public/delete-this/output.js
@@ -0,0 +1,7 @@
+var Foo = /*#__PURE__*/babelHelpers.createClass(function Foo() {
+  "use strict";
+
+  babelHelpers.classCallCheck(this, Foo);
+  babelHelpers.defineProperty(this, "x", delete this);
+});
+babelHelpers.defineProperty(Foo, "x", true);
diff --git a/scripts/integration-tests/e2e-jest.sh b/scripts/integration-tests/e2e-jest.sh
index c774e21eb52a..fea1ec390750 100755
--- a/scripts/integration-tests/e2e-jest.sh
+++ b/scripts/integration-tests/e2e-jest.sh
@@ -48,7 +48,6 @@ if [ "$BABEL_8_BREAKING" = true ] ; then
 
   # Jest depends on @types/babel__traverse for Babel 7, and they contain the removed Noop node
   sed -i 's/t.Noop/any/g' node_modules/@types/babel__traverse/index.d.ts
-  sed -i 's/t.Noop/any/g' node_modules/@types/babel__traverse/ts4.1/index.d.ts
 
   node -e "
     var pkg = require('./package.json');
diff --git a/yarn.lock b/yarn.lock
index f98f2734cd5e..beed2115eaba 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -366,7 +366,7 @@ __metadata:
     convert-source-map: ^1.7.0
     debug: ^4.1.0
     gensync: ^1.0.0-beta.2
-    json5: ^2.2.1
+    json5: ^2.2.2
     rimraf: ^3.0.0
     semver: "condition:BABEL_8_BREAKING ? ^7.3.4 : ^6.3.0"
   languageName: unknown
@@ -591,6 +591,7 @@ __metadata:
     "@babel/helper-optimise-call-expression": "workspace:^"
     "@babel/helper-plugin-test-runner": "workspace:^"
     "@babel/helper-replace-supers": "workspace:^"
+    "@babel/helper-skip-transparent-expression-wrappers": "workspace:^"
     "@babel/helper-split-export-declaration": "workspace:^"
     "@babel/plugin-syntax-class-static-block": ^7.14.5
     "@babel/preset-env": "workspace:^"
@@ -10784,12 +10785,12 @@ fsevents@^1.2.7:
   languageName: node
   linkType: hard
 
-"json5@npm:^2.1.2, json5@npm:^2.2.1":
-  version: 2.2.1
-  resolution: "json5@npm:2.2.1"
+"json5@npm:^2.1.2, json5@npm:^2.2.1, json5@npm:^2.2.2":
+  version: 2.2.2
+  resolution: "json5@npm:2.2.2"
   bin:
     json5: lib/cli.js
-  checksum: 74b8a23b102a6f2bf2d224797ae553a75488b5adbaee9c9b6e5ab8b510a2fc6e38f876d4c77dea672d4014a44b2399e15f2051ac2b37b87f74c0c7602003543b
+  checksum: 9a878d66b72157b073cf0017f3e5d93ec209fa5943abcb38d37a54b208917c166bd473c26a24695e67a016ce65759aeb89946592991f8f9174fb96c8e2492683
   languageName: node
   linkType: hard