/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory() :
    typeof define === 'function' && define.amd ? define(factory) :
    (factory());
}(this, (function () { 'use strict';

(function (global) {
    
    
    // Detect and setup WTF.
    var wtfTrace = null;
    var wtfEvents = null;
    var wtfEnabled = (function () {
        var wtf = global['wtf'];
        if (wtf) {
            wtfTrace = wtf.trace;
            if (wtfTrace) {
                wtfEvents = wtfTrace.events;
                return true;
            }
        }
        return false;
    })();
    var WtfZoneSpec = (function () {
        function WtfZoneSpec() {
            this.name = 'WTF';
        }
        WtfZoneSpec.prototype.onFork = function (parentZoneDelegate, currentZone, targetZone, zoneSpec) {
            var retValue = parentZoneDelegate.fork(targetZone, zoneSpec);
            WtfZoneSpec.forkInstance(zonePathName(targetZone), retValue.name);
            return retValue;
        };
        WtfZoneSpec.prototype.onInvoke = function (parentZoneDelegate, currentZone, targetZone, delegate, applyThis, applyArgs, source) {
            var scope = WtfZoneSpec.invokeScope[source];
            if (!scope) {
                scope = WtfZoneSpec.invokeScope[source]
                    = wtfEvents.createScope("Zone:invoke:" + source + "(ascii zone)");
            }
            return wtfTrace.leaveScope(scope(zonePathName(targetZone)), parentZoneDelegate.invoke(targetZone, delegate, applyThis, applyArgs, source));
        };
        WtfZoneSpec.prototype.onHandleError = function (parentZoneDelegate, currentZone, targetZone, error) {
            return parentZoneDelegate.handleError(targetZone, error);
        };
        WtfZoneSpec.prototype.onScheduleTask = function (parentZoneDelegate, currentZone, targetZone, task) {
            var key = task.type + ':' + task.source;
            var instance = WtfZoneSpec.scheduleInstance[key];
            if (!instance) {
                instance = WtfZoneSpec.scheduleInstance[key]
                    = wtfEvents.createInstance("Zone:schedule:" + key + "(ascii zone, any data)");
            }
            var retValue = parentZoneDelegate.scheduleTask(targetZone, task);
            instance(zonePathName(targetZone), shallowObj(task.data, 2));
            return retValue;
        };
        WtfZoneSpec.prototype.onInvokeTask = function (parentZoneDelegate, currentZone, targetZone, task, applyThis, applyArgs) {
            var source = task.source;
            var scope = WtfZoneSpec.invokeTaskScope[source];
            if (!scope) {
                scope = WtfZoneSpec.invokeTaskScope[source]
                    = wtfEvents.createScope("Zone:invokeTask:" + source + "(ascii zone)");
            }
            return wtfTrace.leaveScope(scope(zonePathName(targetZone)), parentZoneDelegate.invokeTask(targetZone, task, applyThis, applyArgs));
        };
        WtfZoneSpec.prototype.onCancelTask = function (parentZoneDelegate, currentZone, targetZone, task) {
            var key = task.source;
            var instance = WtfZoneSpec.cancelInstance[key];
            if (!instance) {
                instance = WtfZoneSpec.cancelInstance[key]
                    = wtfEvents.createInstance("Zone:cancel:" + key + "(ascii zone, any options)");
            }
            var retValue = parentZoneDelegate.cancelTask(targetZone, task);
            instance(zonePathName(targetZone), shallowObj(task.data, 2));
            return retValue;
        };
        
        WtfZoneSpec.forkInstance = wtfEnabled && wtfEvents.createInstance('Zone:fork(ascii zone, ascii newZone)');
        WtfZoneSpec.scheduleInstance = {};
        WtfZoneSpec.cancelInstance = {};
        WtfZoneSpec.invokeScope = {};
        WtfZoneSpec.invokeTaskScope = {};
        return WtfZoneSpec;
    }());
    function shallowObj(obj, depth) {
        if (!depth)
            return null;
        var out = {};
        for (var key in obj) {
            if (obj.hasOwnProperty(key)) {
                var value = obj[key];
                switch (typeof value) {
                    case 'object':
                        var name_1 = value && value.constructor && value.constructor.name;
                        value = name_1 == Object.name ? shallowObj(value, depth - 1) : name_1;
                        break;
                    case 'function':
                        value = value.name || undefined;
                        break;
                }
                out[key] = value;
            }
        }
        return out;
    }
    function zonePathName(zone) {
        var name = zone.name;
        zone = zone.parent;
        while (zone != null) {
            name = zone.name + '::' + name;
            zone = zone.parent;
        }
        return name;
    }
    Zone['wtfZoneSpec'] = !wtfEnabled ? null : new WtfZoneSpec();
})(typeof window === 'object' && window || typeof self === 'object' && self || global);

})));
