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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";

ChromeUtils.import("resource://gre/modules/osfile.jsm", this);
ChromeUtils.import("resource://gre/modules/Promise.jsm", this);

function makeWatcher() {
  let watcher = Cc[
    "@mozilla.org/toolkit/filewatcher/native-file-watcher;1"
  ].getService(Ci.nsINativeFileWatcherService);
  return watcher;
}

function promiseAddPath(watcher, resource, onChange = null, onError = null) {
  return new Promise(resolve =>
    watcher.addPath(resource, onChange, onError, resolve)
  );
}

function promiseRemovePath(watcher, resource, onChange = null, onError = null) {
  return new Promise(resolve =>
    watcher.removePath(resource, onChange, onError, resolve)
  );
}