/*
  Copyright 2018 Google LLC

  Use of this source code is governed by an MIT-style
  license that can be found in the LICENSE file or at
  https://opensource.org/licenses/MIT.
*/
import '../_version.js';
/**
 * The Deferred class composes Promises in a way that allows for them to be
 * resolved or rejected from outside the constructor. In most cases promises
 * should be used directly, but Deferreds can be necessary when the logic to
 * resolve a promise must be separate.
 *
 * @private
 */
class Deferred {
    /**
     * Creates a promise and exposes its resolve and reject functions as methods.
     */
    constructor() {
        this.promise = new Promise((resolve, reject) => {
            this.resolve = resolve;
            this.reject = reject;
        });
    }
}
export { Deferred };