Zone.__load_patch('ZoneAwarePromise', (global, Zone, api) => {
        const ObjectGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
        const ObjectDefineProperty = Object.defineProperty;
        function readableObjectToString(obj) {
            if (obj && obj.toString === Object.prototype.toString) {
                const className = obj.constructor && obj.constructor.name;
                return (className ? className : '') + ': ' + JSON.stringify(obj);
            }
            return obj ? obj.toString() : Object.prototype.toString.call(obj);
        }
        const __symbol__ = api.symbol;
        const _uncaughtPromiseErrors = [];
        const symbolPromise = __symbol__('Promise');
        const symbolThen = __symbol__('then');
        const creationTrace = '__creationTrace__';
        api.onUnhandledError = (e) => {
            if (api.showUncaughtError()) {
                const rejection = e && e.rejection;
                if (rejection) {
                    console.error('Unhandled Promise rejection:', rejection instanceof Error ? rejection.message : rejection, '; Zone:', e.zone.name, '; Task:', e.task && e.task.source, '; Value:', rejection, rejection instanceof Error ? rejection.stack : undefined);
                }
                else {
                    console.error(e);
                }
            }
        };
        api.microtaskDrainDone = () => {
            while (_uncaughtPromiseErrors.length) {
                while (_uncaughtPromiseErrors.length) {
                    const uncaughtPromiseError = _uncaughtPromiseErrors.shift();
                    try {
                        uncaughtPromiseError.zone.runGuarded(() => { throw uncaughtPromiseError; });
                    }
                    catch (error) {
                        handleUnhandledRejection(error);
                    }
                }
            }
        };
        const UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL = __symbol__('unhandledPromiseRejectionHandler');
        function handleUnhandledRejection(e) {
            api.onUnhandledError(e);
            try {
                const handler = Zone[UNHANDLED_PROMISE_REJECTION_HANDLER_SYMBOL];
                if (handler && typeof handler === 'function') {
                    handler.call(this, e);
                }
            }
            catch (err) {
            }
        }
        function isThenable(value) { return value && value.then; }
        function forwardResolution(value) { return value; }
        function forwardRejection(rejection) { return ZoneAwarePromise.reject(rejection); }
        const symbolState = __symbol__('state');
        const symbolValue = __symbol__('value');
        const symbolFinally = __symbol__('finally');
        const symbolParentPromiseValue = __symbol__('parentPromiseValue');
        const symbolParentPromiseState = __symbol__('parentPromiseState');
        const source = 'Promise.then';
        const UNRESOLVED = null;
        const RESOLVED = true;
        const REJECTED = false;
        const REJECTED_NO_CATCH = 0;
        function makeResolver(promise, state) {
            return (v) => {
                try {
                    resolvePromise(promise, state, v);
                }
                catch (err) {
                    resolvePromise(promise, false, err);
                }
                // Do not return value or you will break the Promise spec.
            };
        }
        const once = function () {
            let wasCalled = false;
            return function wrapper(wrappedFunction) {
                return function () {
                    if (wasCalled) {
                        return;
                    }
                    wasCalled = true;
                    wrappedFunction.apply(null, arguments);
                };
            };
        };
        const TYPE_ERROR = 'Promise resolved with itself';
        const CURRENT_TASK_TRACE_SYMBOL = __symbol__('currentTaskTrace');
        // Promise Resolution
        function resolvePromise(promise, state, value) {
            const onceWrapper = once();
            if (promise === value) {
                throw new TypeError(TYPE_ERROR);
            }
            if (promise[symbolState] === UNRESOLVED) {
                // should only get value.then once based on promise spec.
                let then = null;
                try {
                    if (typeof value === 'object' || typeof value === 'function') {
                        then = value && value.then;
                    }
                }
                catch (err) {
                    onceWrapper(() => { resolvePromise(promise, false, err); })();
                    return promise;
                }
                // if (value instanceof ZoneAwarePromise) {
                if (state !== REJECTED && value instanceof ZoneAwarePromise &&
                    value.hasOwnProperty(symbolState) && value.hasOwnProperty(symbolValue) &&
                    value[symbolState] !== UNRESOLVED) {
                    clearRejectedNoCatch(value);
                    resolvePromise(promise, value[symbolState], value[symbolValue]);
                }
                else if (state !== REJECTED && typeof then === 'function') {
                    try {
                        then.call(value, onceWrapper(makeResolver(promise, state)), onceWrapper(makeResolver(promise, false)));
                    }
                    catch (err) {
                        onceWrapper(() => { resolvePromise(promise, false, err); })();
                    }
                }
                else {
                    promise[symbolState] = state;
                    const queue = promise[symbolValue];
                    promise[symbolValue] = value;
                    if (promise[symbolFinally] === symbolFinally) {
                        // the promise is generated by Promise.prototype.finally
                        if (state === RESOLVED) {
                            // the state is resolved, should ignore the value
                            // and use parent promise value
                            promise[symbolState] = promise[symbolParentPromiseState];
                            promise[symbolValue] = promise[symbolParentPromiseValue];
                        }
                    }
                    // record task information in value when error occurs, so we can
                    // do some additional work such as render longStackTrace
                    if (state === REJECTED && value instanceof Error) {
                        // check if longStackTraceZone is here
                        const trace = Zone.currentTask && Zone.currentTask.data &&
                            Zone.currentTask.data[creationTrace];
                        if (trace) {
                            // only keep the long stack trace into error when in longStackTraceZone
                            ObjectDefineProperty(value, CURRENT_TASK_TRACE_SYMBOL, { configurable: true, enumerable: false, writable: true, value: trace });
                        }
                    }
                    for (let i = 0; i < queue.length;) {
                        scheduleResolveOrReject(promise, queue[i++], queue[i++], queue[i++], queue[i++]);
                    }
                    if (queue.length == 0 && state == REJECTED) {
                        promise[symbolState] = REJECTED_NO_CATCH;
                        try {
                            // try to print more readable error log
                            throw new Error('Uncaught (in promise): ' + readableObjectToString(value) +
                                (value && value.stack ? '\n' + value.stack : ''));
                        }
                        catch (err) {
                            const error = err;
                            error.rejection = value;
                            error.promise = promise;
                            error.zone = Zone.current;
                            error.task = Zone.currentTask;
                            _uncaughtPromiseErrors.push(error);
                            api.scheduleMicroTask(); // to make sure that it is running
                        }
                    }
                }
            }
            // Resolving an already resolved promise is a noop.
            return promise;
        }
        const REJECTION_HANDLED_HANDLER = __symbol__('rejectionHandledHandler');
        function clearRejectedNoCatch(promise) {
            if (promise[symbolState] === REJECTED_NO_CATCH) {
                // if the promise is rejected no catch status
                // and queue.length > 0, means there is a error handler
                // here to handle the rejected promise, we should trigger
                // windows.rejectionhandled eventHandler or nodejs rejectionHandled
                // eventHandler
                try {
                    const handler = Zone[REJECTION_HANDLED_HANDLER];
                    if (handler && typeof handler === 'function') {
                        handler.call(this, { rejection: promise[symbolValue], promise: promise });
                    }
                }
                catch (err) {
                }
                promise[symbolState] = REJECTED;
                for (let i = 0; i < _uncaughtPromiseErrors.length; i++) {
                    if (promise === _uncaughtPromiseErrors[i].promise) {
                        _uncaughtPromiseErrors.splice(i, 1);
                    }
                }
            }
        }
        function scheduleResolveOrReject(promise, zone, chainPromise, onFulfilled, onRejected) {
            clearRejectedNoCatch(promise);
            const promiseState = promise[symbolState];
            const delegate = promiseState ?
                (typeof onFulfilled === 'function') ? onFulfilled : forwardResolution :
                (typeof onRejected === 'function') ? onRejected : forwardRejection;
            zone.scheduleMicroTask(source, () => {
                try {
                    const parentPromiseValue = promise[symbolValue];
                    const isFinallyPromise = !!chainPromise && symbolFinally === chainPromise[symbolFinally];
                    if (isFinallyPromise) {
                        // if the promise is generated from finally call, keep parent promise's state and value
                        chainPromise[symbolParentPromiseValue] = parentPromiseValue;
                        chainPromise[symbolParentPromiseState] = promiseState;
                    }
                    // should not pass value to finally callback
                    const value = zone.run(delegate, undefined, isFinallyPromise && delegate !== forwardRejection && delegate !== forwardResolution ?
                        [] :
                        [parentPromiseValue]);
                    resolvePromise(chainPromise, true, value);
                }
                catch (error) {
                    // if error occurs, should always return this error
                    resolvePromise(chainPromise, false, error);
                }
            }, chainPromise);
        }
        const ZONE_AWARE_PROMISE_TO_STRING = 'function ZoneAwarePromise() { [native code] }';
        class ZoneAwarePromise {
            constructor(executor) {
                const promise = this;
                if (!(promise instanceof ZoneAwarePromise)) {
                    throw new Error('Must be an instanceof Promise.');
                }
                promise[symbolState] = UNRESOLVED;
                promise[symbolValue] = []; // queue;
                try {
                    executor && executor(makeResolver(promise, RESOLVED), makeResolver(promise, REJECTED));
                }
                catch (error) {
                    resolvePromise(promise, false, error);
                }
            }
            static toString() { return ZONE_AWARE_PROMISE_TO_STRING; }
            static resolve(value) {
                return resolvePromise(new this(null), RESOLVED, value);
            }
            static reject(error) {
                return resolvePromise(new this(null), REJECTED, error);
            }
            static race(values) {
                let resolve;
                let reject;
                let promise = new this((res, rej) => {
                    resolve = res;
                    reject = rej;
                });
                function onResolve(value) { resolve(value); }
                function onReject(error) { reject(error); }
                for (let value of values) {
                    if (!isThenable(value)) {
                        value = this.resolve(value);
                    }
                    value.then(onResolve, onReject);
                }
                return promise;
            }
            static all(values) { return ZoneAwarePromise.allWithCallback(values); }
            static allSettled(values) {
                const P = this && this.prototype instanceof ZoneAwarePromise ? this : ZoneAwarePromise;
                return P.allWithCallback(values, {
                    thenCallback: (value) => ({ status: 'fulfilled', value }),
                    errorCallback: (err) => ({ status: 'rejected', reason: err })
                });
            }
            static allWithCallback(values, callback) {
                let resolve;
                let reject;
                let promise = new this((res, rej) => {
                    resolve = res;
                    reject = rej;
                });
                // Start at 2 to prevent prematurely resolving if .then is called immediately.
                let unresolvedCount = 2;
                let valueIndex = 0;
                const resolvedValues = [];
                for (let value of values) {
                    if (!isThenable(value)) {
                        value = this.resolve(value);
                    }
                    const curValueIndex = valueIndex;
                    try {
                        value.then((value) => {
                            resolvedValues[curValueIndex] = callback ? callback.thenCallback(value) : value;
                            unresolvedCount--;
                            if (unresolvedCount === 0) {
                                resolve(resolvedValues);
                            }
                        }, (err) => {
                            if (!callback) {
                                reject(err);
                            }
                            else {
                                resolvedValues[curValueIndex] = callback.errorCallback(err);
                                unresolvedCount--;
                                if (unresolvedCount === 0) {
                                    resolve(resolvedValues);
                                }
                            }
                        });
                    }
                    catch (thenErr) {
                        reject(thenErr);
                    }
                    unresolvedCount++;
                    valueIndex++;
                }
                // Make the unresolvedCount zero-based again.
                unresolvedCount -= 2;
                if (unresolvedCount === 0) {
                    resolve(resolvedValues);
                }
                return promise;
            }
            get [Symbol.toStringTag]() { return 'Promise'; }
            then(onFulfilled, onRejected) {
                const chainPromise = new this.constructor(null);
                const zone = Zone.current;
                if (this[symbolState] == UNRESOLVED) {
                    this[symbolValue].push(zone, chainPromise, onFulfilled, onRejected);
                }
                else {
                    scheduleResolveOrReject(this, zone, chainPromise, onFulfilled, onRejected);
                }
                return chainPromise;
            }
            catch(onRejected) {
                return this.then(null, onRejected);
            }
            finally(onFinally) {
                const chainPromise = new this.constructor(null);
                chainPromise[symbolFinally] = symbolFinally;
                const zone = Zone.current;
                if (this[symbolState] == UNRESOLVED) {
                    this[symbolValue].push(zone, chainPromise, onFinally, onFinally);
                }
                else {
                    scheduleResolveOrReject(this, zone, chainPromise, onFinally, onFinally);
                }
                return chainPromise;
            }
        }
        // Protect against aggressive optimizers dropping seemingly unused properties.
        // E.g. Closure Compiler in advanced mode.
        ZoneAwarePromise['resolve'] = ZoneAwarePromise.resolve;
        ZoneAwarePromise['reject'] = ZoneAwarePromise.reject;
        ZoneAwarePromise['race'] = ZoneAwarePromise.race;
        ZoneAwarePromise['all'] = ZoneAwarePromise.all;
        const NativePromise = global[symbolPromise] = global['Promise'];
        const ZONE_AWARE_PROMISE = Zone.__symbol__('ZoneAwarePromise');
        let desc = ObjectGetOwnPropertyDescriptor(global, 'Promise');
        if (!desc || desc.configurable) {
            desc && delete desc.writable;
            desc && delete desc.value;
            if (!desc) {
                desc = { configurable: true, enumerable: true };
            }
            desc.get = function () {
                // if we already set ZoneAwarePromise, use patched one
                // otherwise return native one.
                return global[ZONE_AWARE_PROMISE] ? global[ZONE_AWARE_PROMISE] : global[symbolPromise];
            };
            desc.set = function (NewNativePromise) {
                if (NewNativePromise === ZoneAwarePromise) {
                    // if the NewNativePromise is ZoneAwarePromise
                    // save to global
                    global[ZONE_AWARE_PROMISE] = NewNativePromise;
                }
                else {
                    // if the NewNativePromise is not ZoneAwarePromise
                    // for example: after load zone.js, some library just
                    // set es6-promise to global, if we set it to global
                    // directly, assertZonePatched will fail and angular
                    // will not loaded, so we just set the NewNativePromise
                    // to global[symbolPromise], so the result is just like
                    // we load ES6 Promise before zone.js
                    global[symbolPromise] = NewNativePromise;
                    if (!NewNativePromise.prototype[symbolThen]) {
                        patchThen(NewNativePromise);
                    }
                    api.setNativePromise(NewNativePromise);
                }
            };
            ObjectDefineProperty(global, 'Promise', desc);
        }
        global['Promise'] = ZoneAwarePromise;
        const symbolThenPatched = __symbol__('thenPatched');
        function patchThen(Ctor) {
            const proto = Ctor.prototype;
            const prop = ObjectGetOwnPropertyDescriptor(proto, 'then');
            if (prop && (prop.writable === false || !prop.configurable)) {
                // check Ctor.prototype.then propertyDescriptor is writable or not
                // in meteor env, writable is false, we should ignore such case
                return;
            }
            const originalThen = proto.then;
            // Keep a reference to the original method.
            proto[symbolThen] = originalThen;
            Ctor.prototype.then = function (onResolve, onReject) {
                const wrapped = new ZoneAwarePromise((resolve, reject) => { originalThen.call(this, resolve, reject); });
                return wrapped.then(onResolve, onReject);
            };
            Ctor[symbolThenPatched] = true;
        }
        api.patchThen = patchThen;
        function zoneify(fn) {
            return function () {
                let resultPromise = fn.apply(this, arguments);
                if (resultPromise instanceof ZoneAwarePromise) {
                    return resultPromise;
                }
                let ctor = resultPromise.constructor;
                if (!ctor[symbolThenPatched]) {
                    patchThen(ctor);
                }
                return resultPromise;
            };
        }
        if (NativePromise) {
            patchThen(NativePromise);
            const fetch = global['fetch'];
            if (typeof fetch == 'function') {
                global[api.symbol('fetch')] = fetch;
                global['fetch'] = zoneify(fetch);
            }
        }
        // This is not part of public API, but it is useful for tests, so we expose it.
        Promise[Zone.__symbol__('uncaughtPromiseErrors')] = _uncaughtPromiseErrors;
        return ZoneAwarePromise;
    })