old_contents: 'use strict';
  
  var util = require('util');
  var Undertaker = require('undertaker');
  var vfs = require('vinyl-fs');
  var chokidar = require('chokidar');
  
  function Gulp() {
    Undertaker.call(this);
  }
  util.inherits(Gulp, Undertaker);
  
  Gulp.prototype.src = vfs.src;
  Gulp.prototype.dest = vfs.dest;
  Gulp.prototype.symlink = vfs.symlink;
  Gulp.prototype.watch = function(glob, opt, task) {
    if (typeof opt === 'string' || typeof task === 'string' ||
      Array.isArray(opt) || Array.isArray(task)) {
      throw new Error('watching ' + glob + ': watch task has to be ' +
        'a function (optionally generated by using gulp.parallel ' +
        'or gulp.series)');
    }
  
    if (typeof opt === 'function') {
      task = opt;
      opt = null;
    }
  
    var fn;
    if (typeof task === 'function') {
      fn = this.parallel(task);
    }
  
    var watcher = chokidar.watch(glob, opt);
    if (fn) {
      watcher
        .on('change', fn)
        .on('unlink', fn)
        .on('add', fn);
    }
  
    return watcher;
  };
  
  // Let people use this class from our instance
  Gulp.prototype.Gulp = Gulp;
  
  var inst = new Gulp();
  module.exports = inst;
  
new_contents: 'use strict';
  
  var util = require('util');
  var Undertaker = require('undertaker');
  var vfs = require('vinyl-fs');
  var chokidar = require('chokidar');
  
  function Gulp() {
    Undertaker.call(this);
  }
  util.inherits(Gulp, Undertaker);
  
  Gulp.prototype.src = vfs.src;
  Gulp.prototype.dest = vfs.dest;
  Gulp.prototype.symlink = vfs.symlink;
  Gulp.prototype.watch = function(glob, opt, task) {
    if (typeof opt === 'string' || typeof task === 'string' ||
      Array.isArray(opt) || Array.isArray(task)) {
      throw new Error('watching ' + glob + ': watch task has to be ' +
        'a function (optionally generated by using gulp.parallel ' +
        'or gulp.series)');
    }
  
    if (typeof opt === 'function') {
      task = opt;
      opt = {};
    }
  
    var fn;
    if (typeof task === 'function') {
      fn = this.parallel(task);
    }
  
    if (opt.ignoreInitial == null) {
      opt.ignoreInitial = true;
    }
  
    var watcher = chokidar.watch(glob, opt);
    if (fn) {
      watcher
        .on('change', fn)
        .on('unlink', fn)
        .on('add', fn);
    }
  
    return watcher;
  };
  
  // Let people use this class from our instance
  Gulp.prototype.Gulp = Gulp;
  
  var inst = new Gulp();
  module.exports = inst;
  
subject: Set chokidar option ignoreIntial: true by default