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| import { config } from './config';
| import instrument from './instrument';
| import {
| noop,
| subscribe,
| FULFILLED,
| REJECTED,
| PENDING,
| invokeCallback
| } from './-internal';
|
| export default function then(onFulfillment, onRejection, label) {
| let parent = this;
| let state = parent._state;
|
| if (state === FULFILLED && !onFulfillment || state === REJECTED && !onRejection) {
| config.instrument && instrument('chained', parent, parent);
| return parent;
| }
|
| parent._onError = null;
|
| let child = new parent.constructor(noop, label);
| let result = parent._result;
|
| config.instrument && instrument('chained', parent, child);
|
| if (state === PENDING) {
| subscribe(parent, child, onFulfillment, onRejection);
| } else {
| let callback = state === FULFILLED ? onFulfillment : onRejection;
| config.async(() => invokeCallback(state, child, callback, result));
| }
|
| return child;
| }
|
|
