angular2/src/facade/promise.js

Angular 2 - a web framework for modern web apps

'use strict';// Promises are put into their own facade file so that they can be used without
// introducing a dependency on rxjs. They are re-exported through facade/async.
var PromiseWrapper = (function () {
    function PromiseWrapper() {
    }
    PromiseWrapper.resolve = function (obj) { return Promise.resolve(obj); };
    PromiseWrapper.reject = function (obj, _) { return Promise.reject(obj); };
    // Note: We can't rename this method into `catch`, as this is not a valid
    // method name in Dart.
    PromiseWrapper.catchError = function (promise, onError) {
        return promise.catch(onError);
    };
    PromiseWrapper.all = function (promises) {
        if (promises.length == 0)
            return Promise.resolve([]);
        return Promise.all(promises);
    };
    PromiseWrapper.then = function (promise, success, rejection) {
        return promise.then(success, rejection);
    };
    PromiseWrapper.wrap = function (computation) {
        return new Promise(function (res, rej) {
            try {
                res(computation());
            }
            catch (e) {
                rej(e);
            }
        });
    };
    PromiseWrapper.scheduleMicrotask = function (computation) {
        PromiseWrapper.then(PromiseWrapper.resolve(null), computation, function (_) { });
    };
    PromiseWrapper.isPromise = function (obj) { return obj instanceof Promise; };
    PromiseWrapper.completer = function () {
        var resolve;
        var reject;
        var p = new Promise(function (res, rej) {
            resolve = res;
            reject = rej;
        });
        return { promise: p, resolve: resolve, reject: reject };
    };
    return PromiseWrapper;
})();
exports.PromiseWrapper = PromiseWrapper;
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