chore: make requiring from outside the Jest VM harder w/out a Babel plugin. (#15658)

Author: cpojer

babel.config.js

@@ -37,7 +37,6 @@ module.exports = {
   ],
   plugins: [
     ['@babel/plugin-transform-modules-commonjs', {allowTopLevelThis: true}],
-    require.resolve('./scripts/babel-plugin-jest-require-outside-vm'),
   ],
   presets: [
     [

packages/jest-snapshot/src/InlineSnapshots.ts

@@ -44,9 +44,12 @@ export function saveInlineSnapshots(
     : undefined;
   if (prettierPath && !prettier) {
     try {
-      prettier =
-        // @ts-expect-error requireOutside
-        requireOutside(prettierPath) as Prettier;
+      prettier = require(
+        require.resolve(prettierPath, {
+          [Symbol.for('jest-resolve-outside-vm-option')]: true,
+        }),
+      ) as Prettier;
+
       cachedPrettier.set(`module|${prettierPath}`, prettier);
 
       if (semver.gte(prettier.version, '3.0.0')) {

packages/jest-snapshot/src/utils.ts

@@ -169,14 +169,20 @@ const indent = (
     .join('\n');
 };
 
-const generate = // @ts-expect-error requireOutside Babel transform
-  (requireOutside('@babel/generator') as typeof import('@babel/generator'))
-    .default;
+const generate = (
+  require(
+    require.resolve('@babel/generator', {
+      [Symbol.for('jest-resolve-outside-vm-option')]: true,
+    }),
+  ) as typeof import('@babel/generator')
+).default;
 
-// @ts-expect-error requireOutside Babel transform
-const {parseSync, types} = requireOutside(
-  '@babel/core',
+const {parseSync, types} = require(
+  require.resolve('@babel/core', {
+    [Symbol.for('jest-resolve-outside-vm-option')]: true,
+  }),
 ) as typeof import('@babel/core');
+
 const {
   isAwaitExpression,
   templateElement,

packages/jest-snapshot/src/worker.ts

@@ -23,8 +23,12 @@ runAsWorker(
     sourceFileWithSnapshots: string,
     snapshotMatcherNames: Array<string>,
   ) => {
-    // @ts-expect-error requireOutside
-    prettier ??= requireOutside(/*webpackIgnore: true*/ prettierPath);
+    prettier ??= require(
+      /*webpackIgnore: true*/
+      require.resolve(prettierPath, {
+        [Symbol.for('jest-resolve-outside-vm-option')]: true,
+      }),
+    );
 
     const config = await prettier.resolveConfig(filepath, {
       editorconfig: true,