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64 lines
1.4 KiB
JavaScript
64 lines
1.4 KiB
JavaScript
"use strict";
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var util = require("./util.js");
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var isPrimitive = util.isPrimitive;
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module.exports = function(Promise) {
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var returner = function () {
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return this;
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};
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var thrower = function () {
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throw this;
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};
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var returnUndefined = function() {};
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var throwUndefined = function() {
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throw undefined;
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};
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var wrapper = function (value, action) {
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if (action === 1) {
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return function () {
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throw value;
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};
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} else if (action === 2) {
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return function () {
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return value;
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};
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}
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};
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Promise.prototype["return"] =
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Promise.prototype.thenReturn = function (value) {
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if (value === undefined) return this.then(returnUndefined);
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if (isPrimitive(value)) {
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return this._then(
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wrapper(value, 2),
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undefined,
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undefined,
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undefined,
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undefined
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);
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} else if (value instanceof Promise) {
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value._ignoreRejections();
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}
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return this._then(returner, undefined, undefined, value, undefined);
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};
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Promise.prototype["throw"] =
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Promise.prototype.thenThrow = function (reason) {
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if (reason === undefined) return this.then(throwUndefined);
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if (isPrimitive(reason)) {
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return this._then(
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wrapper(reason, 1),
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undefined,
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undefined,
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undefined,
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undefined
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);
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}
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return this._then(thrower, undefined, undefined, reason, undefined);
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};
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};
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