angular-cn/tools/build/file2modulename.js

/**
 * @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
 */

function file2moduleName(filePath) {
  return filePath
      .replace(/\\/g, '/')
      // module name should be relative to `modules` and `tools` folder
      .replace(/.*\/modules\//, '')
      //  and 'dist' folder
      .replace(/.*\/dist\/js\/dev\/es5\//, '')
      // module name should not include `lib`, `web` folders
      // as they are wrapper packages for dart
      .replace(/\/web\//, '/')
      .replace(/\/lib\//, '/')
      // module name should not have a suffix
      .replace(/\.\w*$/, '');
}
if (typeof module !== 'undefined') {
  module.exports = file2moduleName;
}