Reflect.js

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Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License. You may obtain a copy of the
License at http://www.apache.org/licenses/LICENSE-2.0

THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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See the Apache Version 2.0 License for specific language governing permissions
and limitations under the License.
***************************************************************************** */
var Reflect;
(function (Reflect) {
    "use strict";
    // Load global or shim versions of Map, Set, and WeakMap
    var functionPrototype = Object.getPrototypeOf(Function);
    var _Map = typeof Map === "function" ? Map : CreateMapPolyfill();
    var _Set = typeof Set === "function" ? Set : CreateSetPolyfill();
    var _WeakMap = typeof WeakMap === "function" ? WeakMap : CreateWeakMapPolyfill();
    // [[Metadata]] internal slot
    var __Metadata__ = new _WeakMap();
    /**
      * Applies a set of decorators to a property of a target object.
      * @param decorators An array of decorators.
      * @param target The target object.
      * @param targetKey (Optional) The property key to decorate.
      * @param targetDescriptor (Optional) The property descriptor for the target key
      * @remarks Decorators are applied in reverse order.
      * @example
      *
      *     class C {
      *         // property declarations are not part of ES6, though they are valid in TypeScript:
      *         // static staticProperty;
      *         // property;
      *
      *         constructor(p) { }
      *         static staticMethod(p) { }
      *         method(p) { }
      *     }
      *
      *     // constructor
      *     C = Reflect.decorate(decoratorsArray, C);
      *
      *     // property (on constructor)
      *     Reflect.decorate(decoratorsArray, C, "staticProperty");
      *
      *     // property (on prototype)
      *     Reflect.decorate(decoratorsArray, C.prototype, "property");
      *
      *     // method (on constructor)
      *     Object.defineProperty(C, "staticMethod",
      *         Reflect.decorate(decoratorsArray, C, "staticMethod",
      *             Object.getOwnPropertyDescriptor(C, "staticMethod")));
      *
      *     // method (on prototype)
      *     Object.defineProperty(C.prototype, "method",
      *         Reflect.decorate(decoratorsArray, C.prototype, "method",
      *             Object.getOwnPropertyDescriptor(C.prototype, "method")));
      *
      */
    function decorate(decorators, target, targetKey, targetDescriptor) {
        if (!IsUndefined(targetDescriptor)) {
            if (!IsArray(decorators)) {
                throw new TypeError();
            }
            else if (!IsObject(target)) {
                throw new TypeError();
            }
            else if (IsUndefined(targetKey)) {
                throw new TypeError();
            }
            else if (!IsObject(targetDescriptor)) {
                throw new TypeError();
            }
            targetKey = ToPropertyKey(targetKey);
            return DecoratePropertyWithDescriptor(decorators, target, targetKey, targetDescriptor);
        }
        else if (!IsUndefined(targetKey)) {
            if (!IsArray(decorators)) {
                throw new TypeError();
            }
            else if (!IsObject(target)) {
                throw new TypeError();
            }
            targetKey = ToPropertyKey(targetKey);
            return DecoratePropertyWithoutDescriptor(decorators, target, targetKey);
        }
        else {
            if (!IsArray(decorators)) {
                throw new TypeError();
            }
            else if (!IsConstructor(target)) {
                throw new TypeError();
            }
            return DecorateConstructor(decorators, target);
        }
    }
    Reflect.decorate = decorate;
    /**
      * A default metadata decorator factory that can be used on a class, class member, or parameter.
      * @param metadataKey The key for the metadata entry.
      * @param metadataValue The value for the metadata entry.
      * @returns A decorator function.
      * @remarks
      * If `metadataKey` is already defined for the target and target key, the
      * metadataValue for that key will be overwritten.
      * @example
      *
      *     // constructor
      *     @Reflect.metadata(key, value)
      *     class C {
      *     }
      *
      *     // property (on constructor, TypeScript only)
      *     class C {
      *         @Reflect.metadata(key, value)
      *         static staticProperty;
      *     }
      *
      *     // property (on prototype, TypeScript only)
      *     class C {
      *         @Reflect.metadata(key, value)
      *         property;
      *     }
      *
      *     // method (on constructor)
      *     class C {
      *         @Reflect.metadata(key, value)
      *         static staticMethod() { }
      *     }
      *
      *     // method (on prototype)
      *     class C {
      *         @Reflect.metadata(key, value)
      *         method() { }
      *     }
      *
      */
    function metadata(metadataKey, metadataValue) {
        function decorator(target, targetKey) {
            if (!IsUndefined(targetKey)) {
                if (!IsObject(target)) {
                    throw new TypeError();
                }
                targetKey = ToPropertyKey(targetKey);
                OrdinaryDefineOwnMetadata(metadataKey, metadataValue, target, targetKey);
            }
            else {
                if (!IsConstructor(target)) {
                    throw new TypeError();
                }
                OrdinaryDefineOwnMetadata(metadataKey, metadataValue, target, /*targetKey*/ undefined);
            }
        }
        return decorator;
    }
    Reflect.metadata = metadata;
    /**
      * Define a unique metadata entry on the target.
      * @param metadataKey A key used to store and retrieve metadata.
      * @param metadataValue A value that contains attached metadata.
      * @param target The target object on which to define metadata.
      * @param targetKey (Optional) The property key for the target.
      * @example
      *
      *     class C {
      *         // property declarations are not part of ES6, though they are valid in TypeScript:
      *         // static staticProperty;
      *         // property;
      *
      *         constructor(p) { }
      *         static staticMethod(p) { }
      *         method(p) { }
      *     }
      *
      *     // constructor
      *     Reflect.defineMetadata("custom:annotation", options, C);
      *
      *     // property (on constructor)
      *     Reflect.defineMetadata("custom:annotation", options, C, "staticProperty");
      *
      *     // property (on prototype)
      *     Reflect.defineMetadata("custom:annotation", options, C.prototype, "property");
      *
      *     // method (on constructor)
      *     Reflect.defineMetadata("custom:annotation", options, C, "staticMethod");
      *
      *     // method (on prototype)
      *     Reflect.defineMetadata("custom:annotation", options, C.prototype, "method");
      *
      *     // decorator factory as metadata-producing annotation.
      *     function MyAnnotation(options): Decorator {
      *         return (target, key?) => Reflect.defineMetadata("custom:annotation", options, target, key);
      *     }
      *
      */
    function defineMetadata(metadataKey, metadataValue, target, targetKey) {
        if (!IsObject(target)) {
            throw new TypeError();
        }
        else if (!IsUndefined(targetKey)) {
            targetKey = ToPropertyKey(targetKey);
        }
        return OrdinaryDefineOwnMetadata(metadataKey, metadataValue, target, targetKey);
    }
    Reflect.defineMetadata = defineMetadata;
    /**
      * Gets a value indicating whether the target object or its prototype chain has the provided metadata key defined.
      * @param metadataKey A key used to store and retrieve metadata.
      * @param target The target object on which the metadata is defined.
      * @param targetKey (Optional) The property key for the target.
      * @returns `true` if the metadata key was defined on the target object or its prototype chain; otherwise, `false`.
      * @example
      *
      *     class C {
      *         // property declarations are not part of ES6, though they are valid in TypeScript:
      *         // static staticProperty;
      *         // property;
      *
      *         constructor(p) { }
      *         static staticMethod(p) { }
      *         method(p) { }
      *     }
      *
      *     // constructor
      *     result = Reflect.hasMetadata("custom:annotation", C);
      *
      *     // property (on constructor)
      *     result = Reflect.hasMetadata("custom:annotation", C, "staticProperty");
      *
      *     // property (on prototype)
      *     result = Reflect.hasMetadata("custom:annotation", C.prototype, "property");
      *
      *     // method (on constructor)
      *     result = Reflect.hasMetadata("custom:annotation", C, "staticMethod");
      *
      *     // method (on prototype)
      *     result = Reflect.hasMetadata("custom:annotation", C.prototype, "method");
      *
      */
    function hasMetadata(metadataKey, target, targetKey) {
        if (!IsObject(target)) {
            throw new TypeError();
        }
        else if (!IsUndefined(targetKey)) {
            targetKey = ToPropertyKey(targetKey);
        }
        return OrdinaryHasMetadata(metadataKey, target, targetKey);
    }
    Reflect.hasMetadata = hasMetadata;
    /**
      * Gets a value indicating whether the target object has the provided metadata key defined.
      * @param metadataKey A key used to store and retrieve metadata.
      * @param target The target object on which the metadata is defined.
      * @param targetKey (Optional) The property key for the target.
      * @returns `true` if the metadata key was defined on the target object; otherwise, `false`.
      * @example
      *
      *     class C {
      *         // property declarations are not part of ES6, though they are valid in TypeScript:
      *         // static staticProperty;
      *         // property;
      *
      *         constructor(p) { }
      *         static staticMethod(p) { }
      *         method(p) { }
      *     }
      *
      *     // constructor
      *     result = Reflect.hasOwnMetadata("custom:annotation", C);
      *
      *     // property (on constructor)
      *     result = Reflect.hasOwnMetadata("custom:annotation", C, "staticProperty");
      *
      *     // property (on prototype)
      *     result = Reflect.hasOwnMetadata("custom:annotation", C.prototype, "property");
      *
      *     // method (on constructor)
      *     result = Reflect.hasOwnMetadata("custom:annotation", C, "staticMethod");
      *
      *     // method (on prototype)
      *     result = Reflect.hasOwnMetadata("custom:annotation", C.prototype, "method");
      *
      */
    function hasOwnMetadata(metadataKey, target, targetKey) {
        if (!IsObject(target)) {
            throw new TypeError();
        }
        else if (!IsUndefined(targetKey)) {
            targetKey = ToPropertyKey(targetKey);
        }
        return OrdinaryHasOwnMetadata(metadataKey, target, targetKey);
    }
    Reflect.hasOwnMetadata = hasOwnMetadata;
    /**
      * Gets the metadata value for the provided metadata key on the target object or its prototype chain.
      * @param metadataKey A key used to store and retrieve metadata.
      * @param target The target object on which the metadata is defined.
      * @param targetKey (Optional) The property key for the target.
      * @returns The metadata value for the metadata key if found; otherwise, `undefined`.
      * @example
      *
      *     class C {
      *         // property declarations are not part of ES6, though they are valid in TypeScript:
      *         // static staticProperty;
      *         // property;
      *
      *         constructor(p) { }
      *         static staticMethod(p) { }
      *         method(p) { }
      *     }
      *
      *     // constructor
      *     result = Reflect.getMetadata("custom:annotation", C);
      *
      *     // property (on constructor)
      *     result = Reflect.getMetadata("custom:annotation", C, "staticProperty");
      *
      *     // property (on prototype)
      *     result = Reflect.getMetadata("custom:annotation", C.prototype, "property");
      *
      *     // method (on constructor)
      *     result = Reflect.getMetadata("custom:annotation", C, "staticMethod");
      *
      *     // method (on prototype)
      *     result = Reflect.getMetadata("custom:annotation", C.prototype, "method");
      *
      */
    function getMetadata(metadataKey, target, targetKey) {
        if (!IsObject(target)) {
            throw new TypeError();
        }
        else if (!IsUndefined(targetKey)) {
            targetKey = ToPropertyKey(targetKey);
        }
        return OrdinaryGetMetadata(metadataKey, target, targetKey);
    }
    Reflect.getMetadata = getMetadata;
    /**
      * Gets the metadata value for the provided metadata key on the target object.
      * @param metadataKey A key used to store and retrieve metadata.
      * @param target The target object on which the metadata is defined.
      * @param targetKey (Optional) The property key for the target.
      * @returns The metadata value for the metadata key if found; otherwise, `undefined`.
      * @example
      *
      *     class C {
      *         // property declarations are not part of ES6, though they are valid in TypeScript:
      *         // static staticProperty;
      *         // property;
      *
      *         constructor(p) { }
      *         static staticMethod(p) { }
      *         method(p) { }
      *     }
      *
      *     // constructor
      *     result = Reflect.getOwnMetadata("custom:annotation", C);
      *
      *     // property (on constructor)
      *     result = Reflect.getOwnMetadata("custom:annotation", C, "staticProperty");
      *
      *     // property (on prototype)
      *     result = Reflect.getOwnMetadata("custom:annotation", C.prototype, "property");
      *
      *     // method (on constructor)
      *     result = Reflect.getOwnMetadata("custom:annotation", C, "staticMethod");
      *
      *     // method (on prototype)
      *     result = Reflect.getOwnMetadata("custom:annotation", C.prototype, "method");
      *
      */
    function getOwnMetadata(metadataKey, target, targetKey) {
        if (!IsObject(target)) {
            throw new TypeError();
        }
        else if (!IsUndefined(targetKey)) {
            targetKey = ToPropertyKey(targetKey);
        }
        return OrdinaryGetOwnMetadata(metadataKey, target, targetKey);
    }
    Reflect.getOwnMetadata = getOwnMetadata;
    /**
      * Gets the metadata keys defined on the target object or its prototype chain.
      * @param target The target object on which the metadata is defined.
      * @param targetKey (Optional) The property key for the target.
      * @returns An array of unique metadata keys.
      * @example
      *
      *     class C {
      *         // property declarations are not part of ES6, though they are valid in TypeScript:
      *         // static staticProperty;
      *         // property;
      *
      *         constructor(p) { }
      *         static staticMethod(p) { }
      *         method(p) { }
      *     }
      *
      *     // constructor
      *     result = Reflect.getMetadataKeys(C);
      *
      *     // property (on constructor)
      *     result = Reflect.getMetadataKeys(C, "staticProperty");
      *
      *     // property (on prototype)
      *     result = Reflect.getMetadataKeys(C.prototype, "property");
      *
      *     // method (on constructor)
      *     result = Reflect.getMetadataKeys(C, "staticMethod");
      *
      *     // method (on prototype)
      *     result = Reflect.getMetadataKeys(C.prototype, "method");
      *
      */
    function getMetadataKeys(target, targetKey) {
        if (!IsObject(target)) {
            throw new TypeError();
        }
        else if (!IsUndefined(targetKey)) {
            targetKey = ToPropertyKey(targetKey);
        }
        return OrdinaryMetadataKeys(target, targetKey);
    }
    Reflect.getMetadataKeys = getMetadataKeys;
    /**
      * Gets the unique metadata keys defined on the target object.
      * @param target The target object on which the metadata is defined.
      * @param targetKey (Optional) The property key for the target.
      * @returns An array of unique metadata keys.
      * @example
      *
      *     class C {
      *         // property declarations are not part of ES6, though they are valid in TypeScript:
      *         // static staticProperty;
      *         // property;
      *
      *         constructor(p) { }
      *         static staticMethod(p) { }
      *         method(p) { }
      *     }
      *
      *     // constructor
      *     result = Reflect.getOwnMetadataKeys(C);
      *
      *     // property (on constructor)
      *     result = Reflect.getOwnMetadataKeys(C, "staticProperty");
      *
      *     // property (on prototype)
      *     result = Reflect.getOwnMetadataKeys(C.prototype, "property");
      *
      *     // method (on constructor)
      *     result = Reflect.getOwnMetadataKeys(C, "staticMethod");
      *
      *     // method (on prototype)
      *     result = Reflect.getOwnMetadataKeys(C.prototype, "method");
      *
      */
    function getOwnMetadataKeys(target, targetKey) {
        if (!IsObject(target)) {
            throw new TypeError();
        }
        else if (!IsUndefined(targetKey)) {
            targetKey = ToPropertyKey(targetKey);
        }
        return OrdinaryOwnMetadataKeys(target, targetKey);
    }
    Reflect.getOwnMetadataKeys = getOwnMetadataKeys;
    /**
      * Deletes the metadata entry from the target object with the provided key.
      * @param metadataKey A key used to store and retrieve metadata.
      * @param target The target object on which the metadata is defined.
      * @param targetKey (Optional) The property key for the target.
      * @returns `true` if the metadata entry was found and deleted; otherwise, false.
      * @example
      *
      *     class C {
      *         // property declarations are not part of ES6, though they are valid in TypeScript:
      *         // static staticProperty;
      *         // property;
      *
      *         constructor(p) { }
      *         static staticMethod(p) { }
      *         method(p) { }
      *     }
      *
      *     // constructor
      *     result = Reflect.deleteMetadata("custom:annotation", C);
      *
      *     // property (on constructor)
      *     result = Reflect.deleteMetadata("custom:annotation", C, "staticProperty");
      *
      *     // property (on prototype)
      *     result = Reflect.deleteMetadata("custom:annotation", C.prototype, "property");
      *
      *     // method (on constructor)
      *     result = Reflect.deleteMetadata("custom:annotation", C, "staticMethod");
      *
      *     // method (on prototype)
      *     result = Reflect.deleteMetadata("custom:annotation", C.prototype, "method");
      *
      */
    function deleteMetadata(metadataKey, target, targetKey) {
        if (!IsObject(target)) {
            throw new TypeError();
        }
        else if (!IsUndefined(targetKey)) {
            targetKey = ToPropertyKey(targetKey);
        }
        // https://github.com/jonathandturner/decorators/blob/master/specs/metadata.md#deletemetadata-metadatakey-p-
        var metadataMap = GetOrCreateMetadataMap(target, targetKey, /*create*/ false);
        if (IsUndefined(metadataMap)) {
            return false;
        }
        if (!metadataMap.delete(metadataKey)) {
            return false;
        }
        if (metadataMap.size > 0) {
            return true;
        }
        var targetMetadata = __Metadata__.get(target);
        targetMetadata.delete(targetKey);
        if (targetMetadata.size > 0) {
            return true;
        }
        __Metadata__.delete(target);
        return true;
    }
    Reflect.deleteMetadata = deleteMetadata;
    function DecorateConstructor(decorators, target) {
        for (var i = decorators.length - 1; i >= 0; --i) {
            var decorator = decorators[i];
            var decorated = decorator(target);
            if (!IsUndefined(decorated)) {
                if (!IsConstructor(decorated)) {
                    throw new TypeError();
                }
                target = decorated;
            }
        }
        return target;
    }
    function DecoratePropertyWithDescriptor(decorators, target, propertyKey, descriptor) {
        for (var i = decorators.length - 1; i >= 0; --i) {
            var decorator = decorators[i];
            var decorated = decorator(target, propertyKey, descriptor);
            if (!IsUndefined(decorated)) {
                if (!IsObject(decorated)) {
                    throw new TypeError();
                }
                descriptor = decorated;
            }
        }
        return descriptor;
    }
    function DecoratePropertyWithoutDescriptor(decorators, target, propertyKey) {
        for (var i = decorators.length - 1; i >= 0; --i) {
            var decorator = decorators[i];
            decorator(target, propertyKey);
        }
    }
    // https://github.com/jonathandturner/decorators/blob/master/specs/metadata.md#getorcreatemetadatamap--o-p-create-
    function GetOrCreateMetadataMap(target, targetKey, create) {
        var targetMetadata = __Metadata__.get(target);
        if (!targetMetadata) {
            if (!create) {
                return undefined;
            }
            targetMetadata = new _Map();
            __Metadata__.set(target, targetMetadata);
        }
        var keyMetadata = targetMetadata.get(targetKey);
        if (!keyMetadata) {
            if (!create) {
                return undefined;
            }
            keyMetadata = new _Map();
            targetMetadata.set(targetKey, keyMetadata);
        }
        return keyMetadata;
    }
    // https://github.com/jonathandturner/decorators/blob/master/specs/metadata.md#ordinaryhasmetadata--metadatakey-o-p-
    function OrdinaryHasMetadata(MetadataKey, O, P) {
        var hasOwn = OrdinaryHasOwnMetadata(MetadataKey, O, P);
        if (hasOwn) {
            return true;
        }
        var parent = GetPrototypeOf(O);
        if (parent !== null) {
            return OrdinaryHasMetadata(MetadataKey, parent, P);
        }
        return false;
    }
    // https://github.com/jonathandturner/decorators/blob/master/specs/metadata.md#ordinaryhasownmetadata--metadatakey-o-p-
    function OrdinaryHasOwnMetadata(MetadataKey, O, P) {
        var metadataMap = GetOrCreateMetadataMap(O, P, /*create*/ false);
        if (metadataMap === undefined) {
            return false;
        }
        return Boolean(metadataMap.has(MetadataKey));
    }
    // https://github.com/jonathandturner/decorators/blob/master/specs/metadata.md#ordinarygetmetadata--metadatakey-o-p-
    function OrdinaryGetMetadata(MetadataKey, O, P) {
        var hasOwn = OrdinaryHasOwnMetadata(MetadataKey, O, P);
        if (hasOwn) {
            return OrdinaryGetOwnMetadata(MetadataKey, O, P);
        }
        var parent = GetPrototypeOf(O);
        if (parent !== null) {
            return OrdinaryGetMetadata(MetadataKey, parent, P);
        }
        return undefined;
    }
    // https://github.com/jonathandturner/decorators/blob/master/specs/metadata.md#ordinarygetownmetadata--metadatakey-o-p-
    function OrdinaryGetOwnMetadata(MetadataKey, O, P) {
        var metadataMap = GetOrCreateMetadataMap(O, P, /*create*/ false);
        if (metadataMap === undefined) {
            return undefined;
        }
        return metadataMap.get(MetadataKey);
    }
    // https://github.com/jonathandturner/decorators/blob/master/specs/metadata.md#ordinarydefineownmetadata--metadatakey-metadatavalue-o-p-
    function OrdinaryDefineOwnMetadata(MetadataKey, MetadataValue, O, P) {
        var metadataMap = GetOrCreateMetadataMap(O, P, /*create*/ true);
        metadataMap.set(MetadataKey, MetadataValue);
    }
    // https://github.com/jonathandturner/decorators/blob/master/specs/metadata.md#ordinarymetadatakeys--o-p-
    function OrdinaryMetadataKeys(O, P) {
        var ownKeys = OrdinaryOwnMetadataKeys(O, P);
        var parent = GetPrototypeOf(O);
        if (parent === null) {
            return ownKeys;
        }
        var parentKeys = OrdinaryMetadataKeys(parent, P);
        if (parentKeys.length <= 0) {
            return ownKeys;
        }
        if (ownKeys.length <= 0) {
            return parentKeys;
        }
        var set = new _Set();
        var keys = [];
        for (var _i = 0; _i < ownKeys.length; _i++) {
            var key = ownKeys[_i];
            var hasKey = set.has(key);
            if (!hasKey) {
                set.add(key);
                keys.push(key);
            }
        }
        for (var _a = 0; _a < parentKeys.length; _a++) {
            var key = parentKeys[_a];
            var hasKey = set.has(key);
            if (!hasKey) {
                set.add(key);
                keys.push(key);
            }
        }
        return keys;
    }
    // https://github.com/jonathandturner/decorators/blob/master/specs/metadata.md#ordinaryownmetadatakeys--o-p-
    function OrdinaryOwnMetadataKeys(target, targetKey) {
        var metadataMap = GetOrCreateMetadataMap(target, targetKey, /*create*/ false);
        var keys = [];
        if (metadataMap) {
            metadataMap.forEach(function (_, key) { return keys.push(key); });
        }
        return keys;
    }
    // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-ecmascript-language-types-undefined-type
    function IsUndefined(x) {
        return x === undefined;
    }
    // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-isarray
    function IsArray(x) {
        return Array.isArray(x);
    }
    // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object-type
    function IsObject(x) {
        return typeof x === "object" ? x !== null : typeof x === "function";
    }
    // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-isconstructor
    function IsConstructor(x) {
        return typeof x === "function";
    }
    // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-ecmascript-language-types-symbol-type
    function IsSymbol(x) {
        return typeof x === "symbol";
    }
    // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-topropertykey
    function ToPropertyKey(value) {
        if (IsSymbol(value)) {
            return value;
        }
        return String(value);
    }
    function GetPrototypeOf(O) {
        var proto = Object.getPrototypeOf(O);
        if (typeof O !== "function" || O === functionPrototype) {
            return proto;
        }
        // TypeScript doesn't set __proto__ in ES5, as it's non-standard. 
        // Try to determine the superclass constructor. Compatible implementations
        // must either set __proto__ on a subclass constructor to the superclass constructor,
        // or ensure each class has a valid `constructor` property on its prototype that
        // points back to the constructor.
        // If this is not the same as Function.[[Prototype]], then this is definately inherited.
        // This is the case when in ES6 or when using __proto__ in a compatible browser.
        if (proto !== functionPrototype) {
            return proto;
        }
        // If the super prototype is Object.prototype, null, or undefined, then we cannot determine the heritage.
        var prototype = O.prototype;
        var prototypeProto = Object.getPrototypeOf(prototype);
        if (prototypeProto == null || prototypeProto === Object.prototype) {
            return proto;
        }
        // if the constructor was not a function, then we cannot determine the heritage.
        var constructor = prototypeProto.constructor;
        if (typeof constructor !== "function") {
            return proto;
        }
        // if we have some kind of self-reference, then we cannot determine the heritage.
        if (constructor === O) {
            return proto;
        }
        // we have a pretty good guess at the heritage.
        return constructor;
    }
    // naive Map shim
    function CreateMapPolyfill() {
        var cacheSentinel = {};
        function Map() {
            this._keys = [];
            this._values = [];
            this._cache = cacheSentinel;
        }
        Map.prototype = {
            get size() {
                return this._keys.length;
            },
            has: function (key) {
                if (key === this._cache) {
                    return true;
                }
                if (this._find(key) >= 0) {
                    this._cache = key;
                    return true;
                }
                return false;
            },
            get: function (key) {
                var index = this._find(key);
                if (index >= 0) {
                    this._cache = key;
                    return this._values[index];
                }
                return undefined;
            },
            set: function (key, value) {
                this.delete(key);
                this._keys.push(key);
                this._values.push(value);
                this._cache = key;
                return this;
            },
            delete: function (key) {
                var index = this._find(key);
                if (index >= 0) {
                    this._keys.splice(index, 1);
                    this._values.splice(index, 1);
                    this._cache = cacheSentinel;
                    return true;
                }
                return false;
            },
            clear: function () {
                this._keys.length = 0;
                this._values.length = 0;
                this._cache = cacheSentinel;
            },
            forEach: function (callback, thisArg) {
                var size = this.size;
                for (var i = 0; i < size; ++i) {
                    var key = this._keys[i];
                    var value = this._values[i];
                    this._cache = key;
                    callback.call(this, value, key, this);
                }
            },
            _find: function (key) {
                var keys = this._keys;
                var size = keys.length;
                for (var i = 0; i < size; ++i) {
                    if (keys[i] === key) {
                        return i;
                    }
                }
                return -1;
            }
        };
        return Map;
    }
    // naive Set shim
    function CreateSetPolyfill() {
        var cacheSentinel = {};
        function Set() {
            this._map = new _Map();
        }
        Set.prototype = {
            get size() {
                return this._map.length;
            },
            has: function (value) {
                return this._map.has(value);
            },
            add: function (value) {
                this._map.set(value, value);
                return this;
            },
            delete: function (value) {
                return this._map.delete(value);
            },
            clear: function () {
                this._map.clear();
            },
            forEach: function (callback, thisArg) {
                this._map.forEach(callback, thisArg);
            }
        };
        return Set;
    }
    // naive WeakMap shim
    function CreateWeakMapPolyfill() {
        var UUID_SIZE = 16;
        var isNode = typeof global !== "undefined" && Object.prototype.toString.call(global.process) === '[object process]';
        var nodeCrypto = isNode && require("crypto");
        var hasOwn = Object.prototype.hasOwnProperty;
        var keys = {};
        var rootKey = CreateUniqueKey();
        function WeakMap() {
            this._key = CreateUniqueKey();
        }
        WeakMap.prototype = {
            has: function (target) {
                var table = GetOrCreateWeakMapTable(target, /*create*/ false);
                if (table) {
                    return this._key in table;
                }
                return false;
            },
            get: function (target) {
                var table = GetOrCreateWeakMapTable(target, /*create*/ false);
                if (table) {
                    return table[this._key];
                }
                return undefined;
            },
            set: function (target, value) {
                var table = GetOrCreateWeakMapTable(target, /*create*/ true);
                table[this._key] = value;
                return this;
            },
            delete: function (target) {
                var table = GetOrCreateWeakMapTable(target, /*create*/ false);
                if (table && this._key in table) {
                    return delete table[this._key];
                }
                return false;
            },
            clear: function () {
                // NOTE: not a real clear, just makes the previous data unreachable
                this._key = CreateUniqueKey();
            }
        };
        function FillRandomBytes(buffer, size) {
            for (var i = 0; i < size; ++i) {
                buffer[i] = Math.random() * 255 | 0;
            }
        }
        function GenRandomBytes(size) {
            if (nodeCrypto) {
                var data = nodeCrypto.randomBytes(size);
                return data;
            }
            else if (typeof Uint8Array === "function") {
                var data = new Uint8Array(size);
                if (typeof crypto !== "undefined") {
                    crypto.getRandomValues(data);
                }
                else if (typeof msCrypto !== "undefined") {
                    msCrypto.getRandomValues(data);
                }
                else {
                    FillRandomBytes(data, size);
                }
                return data;
            }
            else {
                var data = new Array(size);
                FillRandomBytes(data, size);
                return data;
            }
        }
        function CreateUUID() {
            var data = GenRandomBytes(UUID_SIZE);
            // mark as random - RFC 4122 § 4.4
            data[6] = data[6] & 0x4f | 0x40;
            data[8] = data[8] & 0xbf | 0x80;
            var result = "";
            for (var offset = 0; offset < UUID_SIZE; ++offset) {
                var byte = data[offset];
                if (offset === 4 || offset === 6 || offset === 8) {
                    result += "-";
                }
                if (byte < 16) {
                    result += "0";
                }
                result += byte.toString(16).toLowerCase();
            }
            return result;
        }
        function CreateUniqueKey() {
            var key;
            do {
                key = "@@WeakMap@@" + CreateUUID();
            } while (hasOwn.call(keys, key));
            keys[key] = true;
            return key;
        }
        function GetOrCreateWeakMapTable(target, create) {
            if (!hasOwn.call(target, rootKey)) {
                if (!create) {
                    return undefined;
                }
                Object.defineProperty(target, rootKey, { value: Object.create(null) });
            }
            return target[rootKey];
        }
        return WeakMap;
    }
    // hook global Reflect
    (function (__global) {
        if (typeof __global.Reflect !== "undefined") {
            if (__global.Reflect !== Reflect) {
                for (var p in Reflect) {
                    __global.Reflect[p] = Reflect[p];
                }
            }
        }
        else {
            __global.Reflect = Reflect;
        }
    })(typeof window !== "undefined" ? window :
        typeof WorkerGlobalScope !== "undefined" ? self :
            typeof global !== "undefined" ? global :
                Function("return this;")());
})(Reflect || (Reflect = {}));
//# sourceMappingURL=Reflect.js.map