Acme.BookStore.HttpApi.Host/node_modules/glob-watcher/index.js

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'use strict';

var chokidar = require('chokidar');
var debounce = require('just-debounce');
var asyncDone = require('async-done');
var defaults = require('object.defaults/immutable');
var isNegatedGlob = require('is-negated-glob');
var anymatch = require('anymatch');

var defaultOpts = {
  delay: 200,
  events: ['add', 'change', 'unlink'],
  ignored: [],
  ignoreInitial: true,
  queue: true,
};

function listenerCount(ee, evtName) {
  if (typeof ee.listenerCount === 'function') {
    return ee.listenerCount(evtName);
  }

  return ee.listeners(evtName).length;
}

function hasErrorListener(ee) {
  return listenerCount(ee, 'error') !== 0;
}

function exists(val) {
  return val != null;
}

function watch(glob, options, cb) {
  if (typeof options === 'function') {
    cb = options;
    options = {};
  }

  var opt = defaults(options, defaultOpts);

  if (!Array.isArray(opt.events)) {
    opt.events = [opt.events];
  }

  if (Array.isArray(glob)) {
    // We slice so we don't mutate the passed globs array
    glob = glob.slice();
  } else {
    glob = [glob];
  }

  var queued = false;
  var running = false;

  // These use sparse arrays to keep track of the index in the
  // original globs array
  var positives = new Array(glob.length);
  var negatives = new Array(glob.length);