ES Proposal spec-compliant shim for Promise.allSettledKeyed. Invoke its "shim" method to shim Promise.allSettledKeyed if it is unavailable or noncompliant. Note: a global Promise must already exist: the es6-shim is recommended.
This package implements the es-shim API interface. It works in an ES3-supported environment that has Promise available globally, and complies with the proposed spec.
Promise.allSettledKeyed is like Promise.allSettled, but for a dictionary (a plain object) rather than an iterable: it awaits every enumerable own property value, and fulfills with a null-prototype object of the same keys, each mapped to a settlement result ({ status: 'fulfilled', value } or { status: 'rejected', reason }). As with Promise.allSettled, it never rejects on account of an input rejecting.
Most common usage:
var assert = require('assert');
var allSettledKeyed = require('promise.allsettledkeyed');
allSettledKeyed({
shape: Promise.resolve('square'),
color: Promise.reject('no color'),
mass: 42
}).then(function (results) {
assert.deepEqual(results.shape, { status: 'fulfilled', value: 'square' });
assert.deepEqual(results.color, { status: 'rejected', reason: 'no color' });
assert.deepEqual(results.mass, { status: 'fulfilled', value: 42 });
});
require('promise.allsettledkeyed/shim')(); // will be a no-op if not needed
Promise.allSettledKeyed({
a: Promise.resolve(1),
b: Promise.reject(2)
}).then(function (results) {
assert.equal(results.a.status, 'fulfilled');
assert.equal(results.a.value, 1);
assert.equal(results.b.status, 'rejected');
assert.equal(results.b.reason, 2);
});The polyfill, implementation, and shim methods are available as separate entry points, per the es-shim API:
var getPolyfill = require('promise.allsettledkeyed/polyfill');
var implementation = require('promise.allsettledkeyed/implementation');
var shim = require('promise.allsettledkeyed/shim');Simply clone the repo, npm install, and run npm test