Function patchFs

packages/zone.js/lib/node/fs.ts:12–89

(Zone: ZoneType)

import {ZoneType} from '../zone-impl';

export function patchFs(Zone: ZoneType): void {
  Zone.__load_patch('fs', (global: any, Zone: ZoneType, api: _ZonePrivate) => {
    let fs: any;
    try {
      fs = require('fs');
    } catch (err) {}

    if (!fs) return;

    // watch, watchFile, unwatchFile has been patched
    // because EventEmitter has been patched
    const TO_PATCH_MACROTASK_METHODS = [
      'access',
      'appendFile',
      'chmod',
      'chown',
      'close',
      'exists',
      'fchmod',
      'fchown',
      'fdatasync',
      'fstat',
      'fsync',
      'ftruncate',
      'futimes',
      'lchmod',
      'lchown',
      'lutimes',
      'link',
      'lstat',
      'mkdir',
      'mkdtemp',
      'open',
      'opendir',
      'read',
      'readdir',
      'readFile',
      'readlink',
      'realpath',
      'rename',
      'rmdir',
      'stat',
      'symlink',
      'truncate',
      'unlink',
      'utimes',
      'write',
      'writeFile',
      'writev',
    ];

    TO_PATCH_MACROTASK_METHODS.filter(
      (name) => !!fs[name] && typeof fs[name] === 'function',
    ).forEach((name) => {
      patchMacroTask(fs, name, (self: any, args: any[]) => {
        return {
          name: 'fs.' + name,
          args: args,