Revert "build: remove unneeded babel types postinstall patching (angular#53374)" (angular#53432)

This reverts commit 4cdd515.

PR Close angular#53432

Author: alxhub

goldens/public-api/localize/tools/index.md

@@ -5,6 +5,7 @@
 ```ts
 
 /// <reference types="@angular/compiler-cli/private/babel" />
+/// <reference types="@types/babel__core" />
 
 import { AbsoluteFsPath } from '@angular/compiler-cli/private/localize';
 import { Element as Element_2 } from '@angular/compiler';

packages/compiler-cli/private/babel.d.ts

@@ -20,9 +20,5 @@
 // that is not governed by Bazel, and therefore not expected by the `strict_deps` rule.
 // Declaring the modules here allows `strict_deps` to always find a declaration of the modules
 // in an input file to the compilation, therefore accepting the module import.
-declare module '@babel/core' {
-  export * from '@types/babel__core';
-}
-declare module '@babel/generator' {
-  export { default } from '@types/babel__generator';
-}
+declare module '@babel/core' {}
+declare module '@babel/generator' {}

tools/postinstall-patches.js

@@ -45,6 +45,22 @@ sed('-i', '(\'response\' in xhr)', '(\'response\' in (xhr as any))',
     'node_modules/rxjs/src/observable/dom/AjaxObservable.ts');
 */
 
+// Workaround https://github.com/bazelbuild/rules_nodejs/issues/1033
+// TypeScript doesn't understand typings without "declare module" unless
+// they are actually resolved by the @types default mechanism
+log('\n# patch: @types/babel__* adding declare module wrappers');
+ls('node_modules/@types').filter(f => f.startsWith('babel__')).forEach(pkg => {
+  const modName = '@' + pkg.replace('__', '/');
+  const typingsFile = `node_modules/@types/${pkg}/index.d.ts`;
+  // Only add the patch if it is not already there.
+  if (readFileSync(typingsFile, 'utf8').indexOf('/*added by tools/postinstall_patches.js*/') ===
+      -1) {
+    const insertPrefix = `/*added by tools/postinstall_patches.js*/ declare module "${modName}" { `;
+    sed('-i', `(// Type definitions for ${modName})`, insertPrefix + '$1', typingsFile);
+    echo('}').toEnd(typingsFile);
+  }
+});
+
 log('\n# patch: delete d.ts files referring to rxjs-compat');
 // more info in https://github.com/angular/angular/pull/33786
 rm('-rf', [