관리-도구

편집 파일: resolve.js

import {
  noop,
  resolve as _resolve
} from '../-internal';

/**
  `Promise.resolve` returns a promise that will become resolved with the
  passed `value`. It is shorthand for the following:

```javascript
  let promise = new Promise(function(resolve, reject){
    resolve(1);
  });

promise.then(function(value){
    // value === 1
  });
  ```

Instead of writing the above, your code now simply becomes the following:

```javascript
  let promise = Promise.resolve(1);

promise.then(function(value){
    // value === 1
  });
  ```

@method resolve
  @static
  @param {Any} value value that the returned promise will be resolved with
  Useful for tooling.
  @return {Promise} a promise that will become fulfilled with the given
  `value`
*/
export default function resolve(object) {
  /*jshint validthis:true */
  let Constructor = this;

if (object && typeof object === 'object' && object.constructor === Constructor) {
    return object;
  }

let promise = new Constructor(noop);
  _resolve(promise, object);
  return promise;
}