Reflect.js

"use strict";
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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
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Object.defineProperty(exports, "__esModule", { value: true });
var Reflect;
(function (Reflect) {
    // Metadata Proposal
    // https://rbuckton.github.io/reflect-metadata/
    (function (factory) {
        var root = typeof global === "object" ? global :
            typeof self === "object" ? self :
                typeof this === "object" ? this :
                    Function("return this;")();
        var exporter = makeExporter(Reflect);
        if (typeof root.Reflect === "undefined") {
            root.Reflect = Reflect;
        }
        else {
            exporter = makeExporter(root.Reflect, exporter);
        }
        factory(exporter);
        function makeExporter(target, previous) {
            return function (key, value) {
                if (typeof target[key] !== "function") {
                    Object.defineProperty(target, key, { configurable: true, writable: true, value: value });
                }
                if (previous)
                    previous(key, value);
            };
        }
    })(function (exporter) {
        var hasOwn = Object.prototype.hasOwnProperty;
        // feature test for Symbol support
        var supportsSymbol = typeof Symbol === "function";
        var toPrimitiveSymbol = supportsSymbol && typeof Symbol.toPrimitive !== "undefined" ? Symbol.toPrimitive : "@@toPrimitive";
        var iteratorSymbol = supportsSymbol && typeof Symbol.iterator !== "undefined" ? Symbol.iterator : "@@iterator";
        var supportsCreate = typeof Object.create === "function"; // feature test for Object.create support
        var supportsProto = { __proto__: [] } instanceof Array; // feature test for __proto__ support
        var downLevel = !supportsCreate && !supportsProto;
        var HashMap = {
            // create an object in dictionary mode (a.k.a. "slow" mode in v8)
            create: supportsCreate
                ? function () { return MakeDictionary(Object.create(null)); }
                : supportsProto
                    ? function () { return MakeDictionary({ __proto__: null }); }
                    : function () { return MakeDictionary({}); },
            has: downLevel
                ? function (map, key) { return hasOwn.call(map, key); }
                : function (map, key) { return key in map; },
            get: downLevel
                ? function (map, key) { return hasOwn.call(map, key) ? map[key] : undefined; }
                : function (map, key) { return map[key]; },
        };
        // Load global or shim versions of Map, Set, and WeakMap
        var functionPrototype = Object.getPrototypeOf(Function);
        var usePolyfill = typeof process === "object" && process.env && process.env["REFLECT_METADATA_USE_MAP_POLYFILL"] === "true";
        var _Map = !usePolyfill && typeof Map === "function" && typeof Map.prototype.entries === "function" ? Map : CreateMapPolyfill();
        var _Set = !usePolyfill && typeof Set === "function" && typeof Set.prototype.entries === "function" ? Set : CreateSetPolyfill();
        var _WeakMap = !usePolyfill && typeof WeakMap === "function" ? WeakMap : CreateWeakMapPolyfill();
        // [[Metadata]] internal slot
        // https://rbuckton.github.io/reflect-metadata/#ordinary-object-internal-methods-and-internal-slots
        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 propertyKey (Optional) The property key to decorate.
         * @param attributes (Optional) The property descriptor for the target key.
         * @remarks Decorators are applied in reverse order.
         * @example
         *
         *     class Example {
         *         // property declarations are not part of ES6, though they are valid in TypeScript:
         *         // static staticProperty;
         *         // property;
         *
         *         constructor(p) { }
         *         static staticMethod(p) { }
         *         method(p) { }
         *     }
         *
         *     // constructor
         *     Example = Reflect.decorate(decoratorsArray, Example);
         *
         *     // property (on constructor)
         *     Reflect.decorate(decoratorsArray, Example, "staticProperty");
         *
         *     // property (on prototype)
         *     Reflect.decorate(decoratorsArray, Example.prototype, "property");
         *
         *     // method (on constructor)
         *     Object.defineProperty(Example, "staticMethod",
         *         Reflect.decorate(decoratorsArray, Example, "staticMethod",
         *             Object.getOwnPropertyDescriptor(Example, "staticMethod")));
         *
         *     // method (on prototype)
         *     Object.defineProperty(Example.prototype, "method",
         *         Reflect.decorate(decoratorsArray, Example.prototype, "method",
         *             Object.getOwnPropertyDescriptor(Example.prototype, "method")));
         *
         */
        function decorate(decorators, target, propertyKey, attributes) {
            if (!IsUndefined(propertyKey)) {
                if (!IsArray(decorators))
                    throw new TypeError();
                if (!IsObject(target))
                    throw new TypeError();
                if (!IsObject(attributes) && !IsUndefined(attributes) && !IsNull(attributes))
                    throw new TypeError();
                if (IsNull(attributes))
                    attributes = undefined;
                propertyKey = ToPropertyKey(propertyKey);
                return DecorateProperty(decorators, target, propertyKey, attributes);
            }
            else {
                if (!IsArray(decorators))
                    throw new TypeError();
                if (!IsConstructor(target))
                    throw new TypeError();
                return DecorateConstructor(decorators, target);
            }
        }
        exporter("decorate", decorate);
        // 4.1.2 Reflect.metadata(metadataKey, metadataValue)
        // https://rbuckton.github.io/reflect-metadata/#reflect.metadata
        /**
         * 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 Example {
         *     }
         *
         *     // property (on constructor, TypeScript only)
         *     class Example {
         *         @Reflect.metadata(key, value)
         *         static staticProperty;
         *     }
         *
         *     // property (on prototype, TypeScript only)
         *     class Example {
         *         @Reflect.metadata(key, value)
         *         property;
         *     }
         *
         *     // method (on constructor)
         *     class Example {
         *         @Reflect.metadata(key, value)
         *         static staticMethod() { }
         *     }
         *
         *     // method (on prototype)
         *     class Example {
         *         @Reflect.metadata(key, value)
         *         method() { }
         *     }
         *
         */
        function metadata(metadataKey, metadataValue) {
            function decorator(target, propertyKey) {
                if (!IsObject(target))
                    throw new TypeError();
                if (!IsUndefined(propertyKey) && !IsPropertyKey(propertyKey))
                    throw new TypeError();
                OrdinaryDefineOwnMetadata(metadataKey, metadataValue, target, propertyKey);
            }
            return decorator;
        }
        exporter("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 propertyKey (Optional) The property key for the target.
         * @example
         *
         *     class Example {
         *         // 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, Example);
         *
         *     // property (on constructor)
         *     Reflect.defineMetadata("custom:annotation", options, Example, "staticProperty");
         *
         *     // property (on prototype)
         *     Reflect.defineMetadata("custom:annotation", options, Example.prototype, "property");
         *
         *     // method (on constructor)
         *     Reflect.defineMetadata("custom:annotation", options, Example, "staticMethod");
         *
         *     // method (on prototype)
         *     Reflect.defineMetadata("custom:annotation", options, Example.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, propertyKey) {
            if (!IsObject(target))
                throw new TypeError();
            if (!IsUndefined(propertyKey))
                propertyKey = ToPropertyKey(propertyKey);
            return OrdinaryDefineOwnMetadata(metadataKey, metadataValue, target, propertyKey);
        }
        exporter("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 propertyKey (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 Example {
         *         // 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", Example);
         *
         *     // property (on constructor)
         *     result = Reflect.hasMetadata("custom:annotation", Example, "staticProperty");
         *
         *     // property (on prototype)
         *     result = Reflect.hasMetadata("custom:annotation", Example.prototype, "property");
         *
         *     // method (on constructor)
         *     result = Reflect.hasMetadata("custom:annotation", Example, "staticMethod");
         *
         *     // method (on prototype)
         *     result = Reflect.hasMetadata("custom:annotation", Example.prototype, "method");
         *
         */
        function hasMetadata(metadataKey, target, propertyKey) {
            if (!IsObject(target))
                throw new TypeError();
            if (!IsUndefined(propertyKey))
                propertyKey = ToPropertyKey(propertyKey);
            return OrdinaryHasMetadata(metadataKey, target, propertyKey);
        }
        exporter("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 propertyKey (Optional) The property key for the target.
         * @returns `true` if the metadata key was defined on the target object; otherwise, `false`.
         * @example
         *
         *     class Example {
         *         // 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", Example);
         *
         *     // property (on constructor)
         *     result = Reflect.hasOwnMetadata("custom:annotation", Example, "staticProperty");
         *
         *     // property (on prototype)
         *     result = Reflect.hasOwnMetadata("custom:annotation", Example.prototype, "property");
         *
         *     // method (on constructor)
         *     result = Reflect.hasOwnMetadata("custom:annotation", Example, "staticMethod");
         *
         *     // method (on prototype)
         *     result = Reflect.hasOwnMetadata("custom:annotation", Example.prototype, "method");
         *
         */
        function hasOwnMetadata(metadataKey, target, propertyKey) {
            if (!IsObject(target))
                throw new TypeError();
            if (!IsUndefined(propertyKey))
                propertyKey = ToPropertyKey(propertyKey);
            return OrdinaryHasOwnMetadata(metadataKey, target, propertyKey);
        }
        exporter("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 propertyKey (Optional) The property key for the target.
         * @returns The metadata value for the metadata key if found; otherwise, `undefined`.
         * @example
         *
         *     class Example {
         *         // 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", Example);
         *
         *     // property (on constructor)
         *     result = Reflect.getMetadata("custom:annotation", Example, "staticProperty");
         *
         *     // property (on prototype)
         *     result = Reflect.getMetadata("custom:annotation", Example.prototype, "property");
         *
         *     // method (on constructor)
         *     result = Reflect.getMetadata("custom:annotation", Example, "staticMethod");
         *
         *     // method (on prototype)
         *     result = Reflect.getMetadata("custom:annotation", Example.prototype, "method");
         *
         */
        function getMetadata(metadataKey, target, propertyKey) {
            if (!IsObject(target))
                throw new TypeError();
            if (!IsUndefined(propertyKey))
                propertyKey = ToPropertyKey(propertyKey);
            return OrdinaryGetMetadata(metadataKey, target, propertyKey);
        }
        exporter("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 propertyKey (Optional) The property key for the target.
         * @returns The metadata value for the metadata key if found; otherwise, `undefined`.
         * @example
         *
         *     class Example {
         *         // 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", Example);
         *
         *     // property (on constructor)
         *     result = Reflect.getOwnMetadata("custom:annotation", Example, "staticProperty");
         *
         *     // property (on prototype)
         *     result = Reflect.getOwnMetadata("custom:annotation", Example.prototype, "property");
         *
         *     // method (on constructor)
         *     result = Reflect.getOwnMetadata("custom:annotation", Example, "staticMethod");
         *
         *     // method (on prototype)
         *     result = Reflect.getOwnMetadata("custom:annotation", Example.prototype, "method");
         *
         */
        function getOwnMetadata(metadataKey, target, propertyKey) {
            if (!IsObject(target))
                throw new TypeError();
            if (!IsUndefined(propertyKey))
                propertyKey = ToPropertyKey(propertyKey);
            return OrdinaryGetOwnMetadata(metadataKey, target, propertyKey);
        }
        exporter("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 propertyKey (Optional) The property key for the target.
         * @returns An array of unique metadata keys.
         * @example
         *
         *     class Example {
         *         // 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(Example);
         *
         *     // property (on constructor)
         *     result = Reflect.getMetadataKeys(Example, "staticProperty");
         *
         *     // property (on prototype)
         *     result = Reflect.getMetadataKeys(Example.prototype, "property");
         *
         *     // method (on constructor)
         *     result = Reflect.getMetadataKeys(Example, "staticMethod");
         *
         *     // method (on prototype)
         *     result = Reflect.getMetadataKeys(Example.prototype, "method");
         *
         */
        function getMetadataKeys(target, propertyKey) {
            if (!IsObject(target))
                throw new TypeError();
            if (!IsUndefined(propertyKey))
                propertyKey = ToPropertyKey(propertyKey);
            return OrdinaryMetadataKeys(target, propertyKey);
        }
        exporter("getMetadataKeys", getMetadataKeys);
        /**
         * Gets the unique metadata keys defined on the target object.
         * @param target The target object on which the metadata is defined.
         * @param propertyKey (Optional) The property key for the target.
         * @returns An array of unique metadata keys.
         * @example
         *
         *     class Example {
         *         // 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(Example);
         *
         *     // property (on constructor)
         *     result = Reflect.getOwnMetadataKeys(Example, "staticProperty");
         *
         *     // property (on prototype)
         *     result = Reflect.getOwnMetadataKeys(Example.prototype, "property");
         *
         *     // method (on constructor)
         *     result = Reflect.getOwnMetadataKeys(Example, "staticMethod");
         *
         *     // method (on prototype)
         *     result = Reflect.getOwnMetadataKeys(Example.prototype, "method");
         *
         */
        function getOwnMetadataKeys(target, propertyKey) {
            if (!IsObject(target))
                throw new TypeError();
            if (!IsUndefined(propertyKey))
                propertyKey = ToPropertyKey(propertyKey);
            return OrdinaryOwnMetadataKeys(target, propertyKey);
        }
        exporter("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 propertyKey (Optional) The property key for the target.
         * @returns `true` if the metadata entry was found and deleted; otherwise, false.
         * @example
         *
         *     class Example {
         *         // 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", Example);
         *
         *     // property (on constructor)
         *     result = Reflect.deleteMetadata("custom:annotation", Example, "staticProperty");
         *
         *     // property (on prototype)
         *     result = Reflect.deleteMetadata("custom:annotation", Example.prototype, "property");
         *
         *     // method (on constructor)
         *     result = Reflect.deleteMetadata("custom:annotation", Example, "staticMethod");
         *
         *     // method (on prototype)
         *     result = Reflect.deleteMetadata("custom:annotation", Example.prototype, "method");
         *
         */
        function deleteMetadata(metadataKey, target, propertyKey) {
            if (!IsObject(target))
                throw new TypeError();
            if (!IsUndefined(propertyKey))
                propertyKey = ToPropertyKey(propertyKey);
            var metadataMap = GetOrCreateMetadataMap(target, propertyKey, /*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(propertyKey);
            if (targetMetadata.size > 0)
                return true;
            Metadata.delete(target);
            return true;
        }
        exporter("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) && !IsNull(decorated)) {
                    if (!IsConstructor(decorated))
                        throw new TypeError();
                    target = decorated;
                }
            }
            return target;
        }
        function DecorateProperty(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) && !IsNull(decorated)) {
                    if (!IsObject(decorated))
                        throw new TypeError();
                    descriptor = decorated;
                }
            }
            return descriptor;
        }
        function GetOrCreateMetadataMap(O, P, Create) {
            var targetMetadata = Metadata.get(O);
            if (IsUndefined(targetMetadata)) {
                if (!Create)
                    return undefined;
                targetMetadata = new _Map();
                Metadata.set(O, targetMetadata);
            }
            var metadataMap = targetMetadata.get(P);
            if (IsUndefined(metadataMap)) {
                if (!Create)
                    return undefined;
                metadataMap = new _Map();
                targetMetadata.set(P, metadataMap);
            }
            return metadataMap;
        }
        // 3.1.1.1 OrdinaryHasMetadata(MetadataKey, O, P)
        // https://rbuckton.github.io/reflect-metadata/#ordinaryhasmetadata
        function OrdinaryHasMetadata(MetadataKey, O, P) {
            var hasOwn = OrdinaryHasOwnMetadata(MetadataKey, O, P);
            if (hasOwn)
                return true;
            var parent = OrdinaryGetPrototypeOf(O);
            if (!IsNull(parent))
                return OrdinaryHasMetadata(MetadataKey, parent, P);
            return false;
        }
        // 3.1.2.1 OrdinaryHasOwnMetadata(MetadataKey, O, P)
        // https://rbuckton.github.io/reflect-metadata/#ordinaryhasownmetadata
        function OrdinaryHasOwnMetadata(MetadataKey, O, P) {
            var metadataMap = GetOrCreateMetadataMap(O, P, /*Create*/ false);
            if (IsUndefined(metadataMap))
                return false;
            return ToBoolean(metadataMap.has(MetadataKey));
        }
        // 3.1.3.1 OrdinaryGetMetadata(MetadataKey, O, P)
        // https://rbuckton.github.io/reflect-metadata/#ordinarygetmetadata
        function OrdinaryGetMetadata(MetadataKey, O, P) {
            var hasOwn = OrdinaryHasOwnMetadata(MetadataKey, O, P);
            if (hasOwn)
                return OrdinaryGetOwnMetadata(MetadataKey, O, P);
            var parent = OrdinaryGetPrototypeOf(O);
            if (!IsNull(parent))
                return OrdinaryGetMetadata(MetadataKey, parent, P);
            return undefined;
        }
        // 3.1.4.1 OrdinaryGetOwnMetadata(MetadataKey, O, P)
        // https://rbuckton.github.io/reflect-metadata/#ordinarygetownmetadata
        function OrdinaryGetOwnMetadata(MetadataKey, O, P) {
            var metadataMap = GetOrCreateMetadataMap(O, P, /*Create*/ false);
            if (IsUndefined(metadataMap))
                return undefined;
            return metadataMap.get(MetadataKey);
        }
        // 3.1.5.1 OrdinaryDefineOwnMetadata(MetadataKey, MetadataValue, O, P)
        // https://rbuckton.github.io/reflect-metadata/#ordinarydefineownmetadata
        function OrdinaryDefineOwnMetadata(MetadataKey, MetadataValue, O, P) {
            var metadataMap = GetOrCreateMetadataMap(O, P, /*Create*/ true);
            metadataMap.set(MetadataKey, MetadataValue);
        }
        // 3.1.6.1 OrdinaryMetadataKeys(O, P)
        // https://rbuckton.github.io/reflect-metadata/#ordinarymetadatakeys
        function OrdinaryMetadataKeys(O, P) {
            var ownKeys = OrdinaryOwnMetadataKeys(O, P);
            var parent = OrdinaryGetPrototypeOf(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, ownKeys_1 = ownKeys; _i < ownKeys_1.length; _i++) {
                var key = ownKeys_1[_i];
                var hasKey = set.has(key);
                if (!hasKey) {
                    set.add(key);
                    keys.push(key);
                }
            }
            for (var _a = 0, parentKeys_1 = parentKeys; _a < parentKeys_1.length; _a++) {
                var key = parentKeys_1[_a];
                var hasKey = set.has(key);
                if (!hasKey) {
                    set.add(key);
                    keys.push(key);
                }
            }
            return keys;
        }
        // 3.1.7.1 OrdinaryOwnMetadataKeys(O, P)
        // https://rbuckton.github.io/reflect-metadata/#ordinaryownmetadatakeys
        function OrdinaryOwnMetadataKeys(O, P) {
            var keys = [];
            var metadataMap = GetOrCreateMetadataMap(O, P, /*Create*/ false);
            if (IsUndefined(metadataMap))
                return keys;
            var keysObj = metadataMap.keys();
            var iterator = GetIterator(keysObj);
            var k = 0;
            while (true) {
                var next = IteratorStep(iterator);
                if (!next) {
                    keys.length = k;
                    return keys;
                }
                var nextValue = IteratorValue(next);
                try {
                    keys[k] = nextValue;
                }
                catch (e) {
                    try {
                        IteratorClose(iterator);
                    }
                    finally {
                        throw e;
                    }
                }
                k++;
            }
        }
        // 6 ECMAScript Data Typ0es and Values
        // https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values
        function Type(x) {
            if (x === null)
                return 1 /* Null */;
            switch (typeof x) {
                case "undefined": return 0 /* Undefined */;
                case "boolean": return 2 /* Boolean */;
                case "string": return 3 /* String */;
                case "symbol": return 4 /* Symbol */;
                case "number": return 5 /* Number */;
                case "object": return x === null ? 1 /* Null */ : 6 /* Object */;
                default: return 6 /* Object */;
            }
        }
        // 6.1.1 The Undefined Type
        // https://tc39.github.io/ecma262/#sec-ecmascript-language-types-undefined-type
        function IsUndefined(x) {
            return x === undefined;
        }
        // 6.1.2 The Null Type
        // https://tc39.github.io/ecma262/#sec-ecmascript-language-types-null-type
        function IsNull(x) {
            return x === null;
        }
        // 6.1.5 The Symbol Type
        // https://tc39.github.io/ecma262/#sec-ecmascript-language-types-symbol-type
        function IsSymbol(x) {
            return typeof x === "symbol";
        }
        // 6.1.7 The Object Type
        // https://tc39.github.io/ecma262/#sec-object-type
        function IsObject(x) {
            return typeof x === "object" ? x !== null : typeof x === "function";
        }
        // 7.1 Type Conversion
        // https://tc39.github.io/ecma262/#sec-type-conversion
        // 7.1.1 ToPrimitive(input [, PreferredType])
        // https://tc39.github.io/ecma262/#sec-toprimitive
        function ToPrimitive(input, PreferredType) {
            switch (Type(input)) {
                case 0 /* Undefined */: return input;
                case 1 /* Null */: return input;
                case 2 /* Boolean */: return input;
                case 3 /* String */: return input;
                case 4 /* Symbol */: return input;
                case 5 /* Number */: return input;
            }
            var hint = PreferredType === 3 /* String */ ? "string" : PreferredType === 5 /* Number */ ? "number" : "default";
            var exoticToPrim = GetMethod(input, toPrimitiveSymbol);
            if (exoticToPrim !== undefined) {
                var result = exoticToPrim.call(input, hint);
                if (IsObject(result))
                    throw new TypeError();
                return result;
            }
            return OrdinaryToPrimitive(input, hint === "default" ? "number" : hint);
        }
        // 7.1.1.1 OrdinaryToPrimitive(O, hint)
        // https://tc39.github.io/ecma262/#sec-ordinarytoprimitive
        function OrdinaryToPrimitive(O, hint) {
            if (hint === "string") {
                var toString_1 = O.toString;
                if (IsCallable(toString_1)) {
                    var result = toString_1.call(O);
                    if (!IsObject(result))
                        return result;
                }
                var valueOf = O.valueOf;
                if (IsCallable(valueOf)) {
                    var result = valueOf.call(O);
                    if (!IsObject(result))
                        return result;
                }
            }
            else {
                var valueOf = O.valueOf;
                if (IsCallable(valueOf)) {
                    var result = valueOf.call(O);
                    if (!IsObject(result))
                        return result;
                }
                var toString_2 = O.toString;
                if (IsCallable(toString_2)) {
                    var result = toString_2.call(O);
                    if (!IsObject(result))
                        return result;
                }
            }
            throw new TypeError();
        }
        // 7.1.2 ToBoolean(argument)
        // https://tc39.github.io/ecma262/2016/#sec-toboolean
        function ToBoolean(argument) {
            return !!argument;
        }
        // 7.1.12 ToString(argument)
        // https://tc39.github.io/ecma262/#sec-tostring
        function ToString(argument) {
            return "" + argument;
        }
        // 7.1.14 ToPropertyKey(argument)
        // https://tc39.github.io/ecma262/#sec-topropertykey
        function ToPropertyKey(argument) {
            var key = ToPrimitive(argument, 3 /* String */);
            if (IsSymbol(key))
                return key;
            return ToString(key);
        }
        // 7.2 Testing and Comparison Operations
        // https://tc39.github.io/ecma262/#sec-testing-and-comparison-operations
        // 7.2.2 IsArray(argument)
        // https://tc39.github.io/ecma262/#sec-isarray
        function IsArray(argument) {
            return Array.isArray
                ? Array.isArray(argument)
                : argument instanceof Object
                    ? argument instanceof Array
                    : Object.prototype.toString.call(argument) === "[object Array]";
        }
        // 7.2.3 IsCallable(argument)
        // https://tc39.github.io/ecma262/#sec-iscallable
        function IsCallable(argument) {
            // NOTE: This is an approximation as we cannot check for [[Call]] internal method.
            return typeof argument === "function";
        }
        // 7.2.4 IsConstructor(argument)
        // https://tc39.github.io/ecma262/#sec-isconstructor
        function IsConstructor(argument) {
            // NOTE: This is an approximation as we cannot check for [[Construct]] internal method.
            return typeof argument === "function";
        }
        // 7.2.7 IsPropertyKey(argument)
        // https://tc39.github.io/ecma262/#sec-ispropertykey
        function IsPropertyKey(argument) {
            switch (Type(argument)) {
                case 3 /* String */: return true;
                case 4 /* Symbol */: return true;
                default: return false;
            }
        }
        // 7.3 Operations on Objects
        // https://tc39.github.io/ecma262/#sec-operations-on-objects
        // 7.3.9 GetMethod(V, P)
        // https://tc39.github.io/ecma262/#sec-getmethod
        function GetMethod(V, P) {
            var func = V[P];
            if (func === undefined || func === null)
                return undefined;
            if (!IsCallable(func))
                throw new TypeError();
            return func;
        }
        // 7.4 Operations on Iterator Objects
        // https://tc39.github.io/ecma262/#sec-operations-on-iterator-objects
        function GetIterator(obj) {
            var method = GetMethod(obj, iteratorSymbol);
            if (!IsCallable(method))
                throw new TypeError(); // from Call
            var iterator = method.call(obj);
            if (!IsObject(iterator))
                throw new TypeError();
            return iterator;
        }
        // 7.4.4 IteratorValue(iterResult)
        // https://tc39.github.io/ecma262/2016/#sec-iteratorvalue
        function IteratorValue(iterResult) {
            return iterResult.value;
        }
        // 7.4.5 IteratorStep(iterator)
        // https://tc39.github.io/ecma262/#sec-iteratorstep
        function IteratorStep(iterator) {
            var result = iterator.next();
            return result.done ? false : result;
        }
        // 7.4.6 IteratorClose(iterator, completion)
        // https://tc39.github.io/ecma262/#sec-iteratorclose
        function IteratorClose(iterator) {
            var f = iterator["return"];
            if (f)
                f.call(iterator);
        }
        // 9.1 Ordinary Object Internal Methods and Internal Slots
        // https://tc39.github.io/ecma262/#sec-ordinary-object-internal-methods-and-internal-slots
        // 9.1.1.1 OrdinaryGetPrototypeOf(O)
        // https://tc39.github.io/ecma262/#sec-ordinarygetprototypeof
        function OrdinaryGetPrototypeOf(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 = prototype && 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 = {};
            var arraySentinel = [];
            var MapIterator = /** @class */ (function () {
                function MapIterator(keys, values, selector) {
                    this._index = 0;
                    this._keys = keys;
                    this._values = values;
                    this._selector = selector;
                }
                MapIterator.prototype["@@iterator"] = function () { return this; };
                MapIterator.prototype[iteratorSymbol] = function () { return this; };
                MapIterator.prototype.next = function () {
                    var index = this._index;
                    if (index >= 0 && index < this._keys.length) {
                        var result = this._selector(this._keys[index], this._values[index]);
                        if (index + 1 >= this._keys.length) {
                            this._index = -1;
                            this._keys = arraySentinel;
                            this._values = arraySentinel;
                        }
                        else {
                            this._index++;
                        }
                        return { value: result, done: false };
                    }
                    return { value: undefined, done: true };
                };
                MapIterator.prototype.throw = function (error) {
                    if (this._index >= 0) {
                        this._index = -1;
                        this._keys = arraySentinel;
                        this._values = arraySentinel;
                    }
                    throw error;
                };
                MapIterator.prototype.return = function (value) {
                    if (this._index >= 0) {
                        this._index = -1;
                        this._keys = arraySentinel;
                        this._values = arraySentinel;
                    }
                    return { value: value, done: true };
                };
                return MapIterator;
            }());
            return /** @class */ (function () {
                function Map() {
                    this._keys = [];
                    this._values = [];
                    this._cacheKey = cacheSentinel;
                    this._cacheIndex = -2;
                }
                Object.defineProperty(Map.prototype, "size", {
                    get: function () { return this._keys.length; },
                    enumerable: true,
                    configurable: true
                });
                Map.prototype.has = function (key) { return this._find(key, /*insert*/ false) >= 0; };
                Map.prototype.get = function (key) {
                    var index = this._find(key, /*insert*/ false);
                    return index >= 0 ? this._values[index] : undefined;
                };
                Map.prototype.set = function (key, value) {
                    var index = this._find(key, /*insert*/ true);
                    this._values[index] = value;
                    return this;
                };
                Map.prototype.delete = function (key) {
                    var index = this._find(key, /*insert*/ false);
                    if (index >= 0) {
                        var size = this._keys.length;
                        for (var i = index + 1; i < size; i++) {
                            this._keys[i - 1] = this._keys[i];
                            this._values[i - 1] = this._values[i];
                        }
                        this._keys.length--;
                        this._values.length--;
                        if (key === this._cacheKey) {
                            this._cacheKey = cacheSentinel;
                            this._cacheIndex = -2;
                        }
                        return true;
                    }
                    return false;
                };
                Map.prototype.clear = function () {
                    this._keys.length = 0;
                    this._values.length = 0;
                    this._cacheKey = cacheSentinel;
                    this._cacheIndex = -2;
                };
                Map.prototype.keys = function () { return new MapIterator(this._keys, this._values, getKey); };
                Map.prototype.values = function () { return new MapIterator(this._keys, this._values, getValue); };
                Map.prototype.entries = function () { return new MapIterator(this._keys, this._values, getEntry); };
                Map.prototype["@@iterator"] = function () { return this.entries(); };
                Map.prototype[iteratorSymbol] = function () { return this.entries(); };
                Map.prototype._find = function (key, insert) {
                    if (this._cacheKey !== key) {
                        this._cacheIndex = this._keys.indexOf(this._cacheKey = key);
                    }
                    if (this._cacheIndex < 0 && insert) {
                        this._cacheIndex = this._keys.length;
                        this._keys.push(key);
                        this._values.push(undefined);
                    }
                    return this._cacheIndex;
                };
                return Map;
            }());
            function getKey(key, _) {
                return key;
            }
            function getValue(_, value) {
                return value;
            }
            function getEntry(key, value) {
                return [key, value];
            }
        }
        // naive Set shim
        function CreateSetPolyfill() {
            return /** @class */ (function () {
                function Set() {
                    this._map = new _Map();
                }
                Object.defineProperty(Set.prototype, "size", {
                    get: function () { return this._map.size; },
                    enumerable: true,
                    configurable: true
                });
                Set.prototype.has = function (value) { return this._map.has(value); };
                Set.prototype.add = function (value) { return this._map.set(value, value), this; };
                Set.prototype.delete = function (value) { return this._map.delete(value); };
                Set.prototype.clear = function () { this._map.clear(); };
                Set.prototype.keys = function () { return this._map.keys(); };
                Set.prototype.values = function () { return this._map.values(); };
                Set.prototype.entries = function () { return this._map.entries(); };
                Set.prototype["@@iterator"] = function () { return this.keys(); };
                Set.prototype[iteratorSymbol] = function () { return this.keys(); };
                return Set;
            }());
        }
        // naive WeakMap shim
        function CreateWeakMapPolyfill() {
            var UUID_SIZE = 16;
            var keys = HashMap.create();
            var rootKey = CreateUniqueKey();
            return /** @class */ (function () {
                function WeakMap() {
                    this._key = CreateUniqueKey();
                }
                WeakMap.prototype.has = function (target) {
                    var table = GetOrCreateWeakMapTable(target, /*create*/ false);
                    return table !== undefined ? HashMap.has(table, this._key) : false;
                };
                WeakMap.prototype.get = function (target) {
                    var table = GetOrCreateWeakMapTable(target, /*create*/ false);
                    return table !== undefined ? HashMap.get(table, this._key) : undefined;
                };
                WeakMap.prototype.set = function (target, value) {
                    var table = GetOrCreateWeakMapTable(target, /*create*/ true);
                    table[this._key] = value;
                    return this;
                };
                WeakMap.prototype.delete = function (target) {
                    var table = GetOrCreateWeakMapTable(target, /*create*/ false);
                    return table !== undefined ? delete table[this._key] : false;
                };
                WeakMap.prototype.clear = function () {
                    // NOTE: not a real clear, just makes the previous data unreachable
                    this._key = CreateUniqueKey();
                };
                return WeakMap;
            }());
            function CreateUniqueKey() {
                var key;
                do
                    key = "@@WeakMap@@" + CreateUUID();
                while (HashMap.has(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: HashMap.create() });
                }
                return target[rootKey];
            }
            function FillRandomBytes(buffer, size) {
                for (var i = 0; i < size; ++i)
                    buffer[i] = Math.random() * 0xff | 0;
                return buffer;
            }
            function GenRandomBytes(size) {
                if (typeof Uint8Array === "function") {
                    if (typeof crypto !== "undefined")
                        return crypto.getRandomValues(new Uint8Array(size));
                    if (typeof msCrypto !== "undefined")
                        return msCrypto.getRandomValues(new Uint8Array(size));
                    return FillRandomBytes(new Uint8Array(size), size);
                }
                return FillRandomBytes(new Array(size), size);
            }
            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;
            }
        }
        // uses a heuristic used by v8 and chakra to force an object into dictionary mode.
        function MakeDictionary(obj) {
            obj.__ = undefined;
            delete obj.__;
            return obj;
        }
    });
})(Reflect = exports.Reflect || (exports.Reflect = {}));
//# sourceMappingURL=Reflect.js.map