promise.allsettled

ES Proposal spec-compliant shim for Promise.allSettled. Invoke its
“shim” method to shim Promise.allSettled 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.
Most common usage:
var assert = require('assert');
var allSettled = require('promise.allsettled');
var resolved = Promise.resolve(42);
var rejected = Promise.reject(-1);
allSettled([resolved, rejected]).then(function (results) {
    assert.deepEqual(results, [
        { status: 'fulfilled', value: 42 },
        { status: 'rejected', reason: -1 }
    ]);
});
allSettled.shim(); // will be a no-op if not needed
Promise.allSettled([resolved, rejected]).then(function (results) {
    assert.deepEqual(results, [
        { status: 'fulfilled', value: 42 },
        { status: 'rejected', reason: -1 }
    ]);
});Tests
Simply clone the repo, npm install, and run
npm test
 
			