diff --git a/packages/babel-code-frame/test/index.js b/packages/babel-code-frame/test/index.js
index 397a78f1c52b..926d0e11591e 100644
--- a/packages/babel-code-frame/test/index.js
+++ b/packages/babel-code-frame/test/index.js
@@ -1,6 +1,6 @@
 import chalk from "chalk";
 import stripAnsi from "strip-ansi";
-import codeFrame, { codeFrameColumns } from "..";
+import codeFrame, { codeFrameColumns } from "../lib/index.js";
 
 describe("@babel/code-frame", function () {
   test("basic usage", function () {
diff --git a/packages/babel-core/test/async.js b/packages/babel-core/test/async.js
index 4f0e8b9eec97..a7cb2856a27f 100644
--- a/packages/babel-core/test/async.js
+++ b/packages/babel-core/test/async.js
@@ -1,6 +1,6 @@
 import path from "path";
 import { fileURLToPath } from "url";
-import * as babel from "..";
+import * as babel from "../lib/index.js";
 
 import {
   spawnTransformAsync,
diff --git a/packages/babel-helper-compilation-targets/test/targets-parser.spec.js b/packages/babel-helper-compilation-targets/test/targets-parser.spec.js
index 404514775553..60451fb9a844 100644
--- a/packages/babel-helper-compilation-targets/test/targets-parser.spec.js
+++ b/packages/babel-helper-compilation-targets/test/targets-parser.spec.js
@@ -1,7 +1,7 @@
 import browserslist from "browserslist";
 import { join, dirname } from "path";
 import { fileURLToPath } from "url";
-import getTargets from "..";
+import getTargets from "../lib/index.js";
 
 describe("getTargets", () => {
   it("parses", () => {
diff --git a/packages/babel-helper-optimise-call-expression/test/index.js b/packages/babel-helper-optimise-call-expression/test/index.js
index a98d91d01b48..a4fe3601725f 100644
--- a/packages/babel-helper-optimise-call-expression/test/index.js
+++ b/packages/babel-helper-optimise-call-expression/test/index.js
@@ -1,7 +1,7 @@
 import { parse } from "@babel/parser";
 import generator from "@babel/generator";
 import * as t from "@babel/types";
-import optimizeCallExpression from "..";
+import optimizeCallExpression from "../lib/index.js";
 
 function transformInput(input, thisIdentifier) {
   const ast = parse(input);
diff --git a/packages/babel-helper-transform-fixture-test-runner/test/index.js b/packages/babel-helper-transform-fixture-test-runner/test/index.js
index a13d6687ee66..1cc6e095d893 100644
--- a/packages/babel-helper-transform-fixture-test-runner/test/index.js
+++ b/packages/babel-helper-transform-fixture-test-runner/test/index.js
@@ -1,4 +1,4 @@
-import { runCodeInTestContext } from "..";
+import { runCodeInTestContext } from "../lib/index.js";
 import { fileURLToPath } from "url";
 
 const filename = fileURLToPath(import.meta.url);
diff --git a/packages/babel-helper-validator-identifier/test/identifier.spec.js b/packages/babel-helper-validator-identifier/test/identifier.spec.js
index 65a14a0e298f..f3123a29660b 100644
--- a/packages/babel-helper-validator-identifier/test/identifier.spec.js
+++ b/packages/babel-helper-validator-identifier/test/identifier.spec.js
@@ -1,4 +1,4 @@
-import { isIdentifierName } from "..";
+import { isIdentifierName } from "../lib/index.js";
 
 describe("isIdentifierName", function () {
   it("returns false if provided string is empty", function () {
diff --git a/packages/babel-helper-validator-option/test/find-suggestion.spec.js b/packages/babel-helper-validator-option/test/find-suggestion.spec.js
index db6a20cc2833..7a5a20d6ddf3 100644
--- a/packages/babel-helper-validator-option/test/find-suggestion.spec.js
+++ b/packages/babel-helper-validator-option/test/find-suggestion.spec.js
@@ -1,4 +1,4 @@
-import { findSuggestion } from "..";
+import { findSuggestion } from "../lib/index.js";
 
 describe("findSuggestion", function () {
   test.each([
diff --git a/packages/babel-helper-validator-option/test/validator.spec.js b/packages/babel-helper-validator-option/test/validator.spec.js
index dc27b524d27b..2bdab23f9434 100644
--- a/packages/babel-helper-validator-option/test/validator.spec.js
+++ b/packages/babel-helper-validator-option/test/validator.spec.js
@@ -1,4 +1,4 @@
-import { OptionValidator } from "..";
+import { OptionValidator } from "../lib/index.js";
 
 describe("OptionValidator", () => {
   describe("validateTopLevelOptions", () => {
diff --git a/packages/babel-highlight/test/index.js b/packages/babel-highlight/test/index.js
index 64877c7f7f35..b6a7f4da4de7 100644
--- a/packages/babel-highlight/test/index.js
+++ b/packages/babel-highlight/test/index.js
@@ -1,6 +1,6 @@
 import chalk from "chalk";
 import stripAnsi from "strip-ansi";
-import highlight, { shouldHighlight, getChalk } from "..";
+import highlight, { shouldHighlight, getChalk } from "../lib/index.js";
 
 describe("@babel/highlight", function () {
   function stubColorSupport(supported) {
diff --git a/packages/babel-plugin-proposal-class-static-block/test/plugin-ordering.test.js b/packages/babel-plugin-proposal-class-static-block/test/plugin-ordering.test.js
index 0e1fae77548e..7531f51c4d53 100644
--- a/packages/babel-plugin-proposal-class-static-block/test/plugin-ordering.test.js
+++ b/packages/babel-plugin-proposal-class-static-block/test/plugin-ordering.test.js
@@ -1,5 +1,5 @@
 import * as babel from "@babel/core";
-import proposalClassStaticBlock from "..";
+import proposalClassStaticBlock from "../lib/index.js";
 
 describe("plugin ordering", () => {
   it("should work when @babel/plugin-proposal-class-static-block is after class features plugin", () => {
diff --git a/packages/babel-plugin-transform-modules-commonjs/test/copied-nodes.js b/packages/babel-plugin-transform-modules-commonjs/test/copied-nodes.js
index 4fb76081850a..ac37d47669b1 100644
--- a/packages/babel-plugin-transform-modules-commonjs/test/copied-nodes.js
+++ b/packages/babel-plugin-transform-modules-commonjs/test/copied-nodes.js
@@ -2,7 +2,7 @@ import * as babel from "@babel/core";
 import { fileURLToPath } from "url";
 import path from "path";
 
-import transformCommonJS from "..";
+import transformCommonJS from "../lib/index.js";
 
 test("Doesn't use the same object for two different nodes in the AST", function () {
   const code = 'import Foo from "bar"; Foo; Foo;';
diff --git a/packages/babel-plugin-transform-modules-commonjs/test/esmodule-flag.js b/packages/babel-plugin-transform-modules-commonjs/test/esmodule-flag.js
index cdb44988f7a4..7d84cbe73559 100644
--- a/packages/babel-plugin-transform-modules-commonjs/test/esmodule-flag.js
+++ b/packages/babel-plugin-transform-modules-commonjs/test/esmodule-flag.js
@@ -3,7 +3,7 @@ import vm from "vm";
 import { fileURLToPath } from "url";
 import path from "path";
 
-import transformCommonJS from "..";
+import transformCommonJS from "../lib/index.js";
 
 test("Re-export doesn't overwrite __esModule flag", function () {
   let code = 'export * from "./dep";';
diff --git a/packages/babel-plugin-transform-typeof-symbol/test/helper.spec.js b/packages/babel-plugin-transform-typeof-symbol/test/helper.spec.js
index 7d84993c92e3..1a29b705de50 100644
--- a/packages/babel-plugin-transform-typeof-symbol/test/helper.spec.js
+++ b/packages/babel-plugin-transform-typeof-symbol/test/helper.spec.js
@@ -2,7 +2,7 @@ import * as babel from "@babel/core";
 import fs from "fs";
 import { createRequire } from "module";
 
-import transformTypeofSymbol from "..";
+import transformTypeofSymbol from "../lib/index.js";
 
 const require = createRequire(import.meta.url);
 
diff --git a/packages/babel-preset-env/test/regressions.js b/packages/babel-preset-env/test/regressions.js
index 50fb6ef2db47..557c0719607d 100644
--- a/packages/babel-preset-env/test/regressions.js
+++ b/packages/babel-preset-env/test/regressions.js
@@ -1,5 +1,5 @@
 import * as babel7_12 from "@babel/core";
-import env from "..";
+import env from "../lib/index.js";
 import path from "path";
 import { fileURLToPath } from "url";
 
diff --git a/packages/babel-preset-env/test/top-level-await.js b/packages/babel-preset-env/test/top-level-await.js
index 65c222af71e9..93d92de07884 100644
--- a/packages/babel-preset-env/test/top-level-await.js
+++ b/packages/babel-preset-env/test/top-level-await.js
@@ -1,4 +1,4 @@
-import env from "..";
+import env from "../lib/index.js";
 import * as babel from "@babel/core";
 
 describe("supportsTopLevelAwait enables the parser plugin for old parser versions", () => {