package-extensions.ts

/**
 * @fileoverview Package extensions for compatibility adjustments.
 *
 * Package extensions allow modifying package.json fields of dependencies
 * to fix compatibility issues, missing peer dependencies, etc.
 */

import yarnPkgExtensions from '@yarnpkg/extensions'

const { freeze: ObjectFreeze } = Object

export default ObjectFreeze(
  [
    yarnPkgExtensions.packageExtensions,
    [
      '@yarnpkg/extensions@>=1.1.0',
      {
        // Properties with undefined values are omitted when saved as JSON.
        peerDependencies: undefined,
      },
    ],
    [
      'abab@>=2.0.0',
      {
        devDependencies: {
          // Lower the Webpack from v4.x to one supported by abab's peers.
          webpack: '^3.12.0',
        },
      },
    ],
    [
      'is-generator-function@>=1.0.7',
      {
        scripts: {
          // Make the script a silent no-op.
          'test:uglified': '',
        },
      },
    ],
  ].sort((a_, b_) => {
    const a = a_[0].slice(0, a_[0].lastIndexOf('@'))
    const b = b_[0].slice(0, b_[0].lastIndexOf('@'))
    // Simulate the default compareFn of String.prototype.sort.
    if (a < b) {
      return -1
    }
    if (a > b) {
      return 1
    }
    return 0
  }),
)