graphql
Version:
A Query Language and Runtime which can target any service.
28 lines (27 loc) • 850 B
JavaScript
/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* strict
*/
/**
* This function transforms a JS object `ObjMap<Promise<T>>` into
* a `Promise<ObjMap<T>>`
*
* This is akin to bluebird's `Promise.props`, but implemented only using
* `Promise.all` so it will work with any implementation of ES6 promises.
*/
export default function promiseForObject(object) {
var keys = Object.keys(object);
var valuesAndPromises = keys.map(function (name) {
return object[name];
});
return Promise.all(valuesAndPromises).then(function (values) {
return values.reduce(function (resolvedObject, value, i) {
resolvedObject[keys[i]] = value;
return resolvedObject;
}, Object.create(null));
});
}