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                    node_modules/es5-ext/promise/lazy.js
                
             | 35 lines
             | 847 B
             | application/javascript 
             | JavascriptLexer
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      "use strict";

      var isFunction = require("../function/is-function");

      module.exports = function (executor) {

      	var Constructor;

      	if (isFunction(this)) {

      		Constructor = this;

      	} else if (typeof Promise === "function") {

      		Constructor = Promise;

      	} else {

      		throw new TypeError("Could not resolve Promise constuctor");

      	}

      	var lazyThen;

      	var promise = new Constructor(function (resolve, reject) {

      		lazyThen = function (onSuccess, onFailure) {

      			if (!hasOwnProperty.call(this, "then")) {

      				// Sanity check

      				throw new Error("Unexpected (inherited) lazy then invocation");

      			}

      			try { executor(resolve, reject); }

      			catch (reason) { reject(reason); }

      			delete this.then;

      			return this.then(onSuccess, onFailure);

      		};

      	});

      	return Object.defineProperty(promise, "then", {

      		configurable: true,

      		writable: true,

      		value: lazyThen

      	});

      };

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				"use strict";

				var isFunction = require("../function/is-function");

				module.exports = function (executor) {
				var Constructor;
				if (isFunction(this)) {
				Constructor = this;
				} else if (typeof Promise === "function") {
				Constructor = Promise;
				} else {
				throw new TypeError("Could not resolve Promise constuctor");
				}

				var lazyThen;
				var promise = new Constructor(function (resolve, reject) {
				lazyThen = function (onSuccess, onFailure) {
				if (!hasOwnProperty.call(this, "then")) {
				// Sanity check
				throw new Error("Unexpected (inherited) lazy then invocation");
				}

				try { executor(resolve, reject); }
				catch (reason) { reject(reason); }
				delete this.then;
				return this.then(onSuccess, onFailure);
				};
				});

				return Object.defineProperty(promise, "then", {
				configurable: true,
				writable: true,
				value: lazyThen
				});
				};