build: rely on engines to prevent using npm for dependency install

See c385e74454 for more context

.npmrc

@@ -0,0 +1 @@
+engine-strict = true

WORKSPACE

@@ -30,7 +30,6 @@ yarn_install(
     # Ensure that the script is available when running `postinstall` in the Bazel sandbox.
     data = [
         "//:angular-metadata.tsconfig.json",
-        "//:tools/npm/check-npm.js",
     ],
     package_json = "//:package.json",
     yarn_lock = "//:yarn.lock",

package.json

@@ -18,7 +18,8 @@
   },
   "engines": {
     "node": ">=12.13.0 <15.0.0",
-    "yarn": ">=1.0.0"
+    "yarn": ">=1.21.1 <2",
+    "npm": "Please use yarn instead of NPM to install dependencies"
   },
   "scripts": {
     "postinstall": "ngc -p ./angular-metadata.tsconfig.json && node --preserve-symlinks --preserve-symlinks-main ./tools/postinstall-patches.js && yarn ngcc",
@@ -32,7 +33,6 @@
     "test": "bazel test //modules/...",
     "build:watch": "ibazel build //modules/...",
     "test:watch": "ibazel test //modules/...",
-    "preinstall": "node ./tools/npm/check-npm.js",
     "ngcc": "ngcc --properties es2015 browser module main --first-only --create-ivy-entry-points",
     "bazel": "bazel"
   },

tools/npm/check-npm.js

@@ -1,13 +0,0 @@
-/**
- * @license
- * Copyright Google LLC All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
-if (process.env.npm_execpath.indexOf('yarn') === -1) {
-  console.error('Please use Yarn instead of NPM to install dependencies. ' +
-    'See: https://yarnpkg.com/lang/en/docs/install/');
-  process.exit(1);
-}