/*! *****************************************************************************
Copyright (C) Microsoft. All rights reserved.
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
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
MERCHANTABLITY OR NON-INFRINGEMENT.

See the Apache Version 2.0 License for specific language governing permissions
and limitations under the License.
***************************************************************************** */
var Reflect;
(function (Reflect) {
    // Metadata Proposal
    // https://rbuckton.github.io/reflect-metadata/
    (function (factory) {
        var root = typeof globalThis === "object" ? globalThis :
            typeof global === "object" ? global :
                typeof self === "object" ? self :
                    typeof this === "object" ? this :
                        sloppyModeThis();
        var exporter = makeExporter(Reflect);
        if (typeof root.Reflect !== "undefined") {
            exporter = makeExporter(root.Reflect, exporter);
        }
        factory(exporter, root);
        if (typeof root.Reflect === "undefined") {
            root.Reflect = Reflect;
        }
        function makeExporter(target, previous) {
            return function (key, value) {
                Object.defineProperty(target, key, { configurable: true, writable: true, value: value });
                if (previous)
                    previous(key, value);
            };
        }
        function sloppyModeThis() {
            throw new ReferenceError("globalThis could not be found. Please polyfill globalThis before loading this module.");
        }
    })(function (exporter, root) {
        // feature test for Symbol support
        var supportsSymbol = typeof Symbol === "function";
        var toPrimitiveSymbol = supportsSymbol && typeof Symbol.toPrimitive !== "undefined" ? Symbol.toPrimitive : fail("Symbol.toPrimitive not found.");
        var iteratorSymbol = supportsSymbol && typeof Symbol.iterator !== "undefined" ? Symbol.iterator : fail("Symbol.iterator not found.");
        // Load global or shim versions of Map, Set, and WeakMap
        var functionPrototype = Object.getPrototypeOf(Function);
        var _Map = typeof Map === "function" && typeof Map.prototype.entries === "function" ? Map : fail("A valid Map constructor could not be found.");
        var _Set = typeof Set === "function" && typeof Set.prototype.entries === "function" ? Set : fail("A valid Set constructor could not be found.");
        var _WeakMap = typeof WeakMap === "function" ? WeakMap : fail("A valid WeakMap constructor could not be found.");
        var registrySymbol = supportsSymbol ? Symbol.for("@reflect-metadata:registry") : undefined;
        var metadataRegistry = GetOrCreateMetadataRegistry();
        var metadataProvider = CreateMetadataProvider(metadataRegistry);
        /**
         * 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 provider = GetMetadataProvider(target, propertyKey, /*Create*/ false);
            if (IsUndefined(provider))
                return false;
            return provider.OrdinaryDeleteMetadata(metadataKey, target, propertyKey);
        }
        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;
        }
        // 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 provider = GetMetadataProvider(O, P, /*Create*/ false);
            if (IsUndefined(provider))
                return false;
            return ToBoolean(provider.OrdinaryHasOwnMetadata(MetadataKey, O, P));
        }
        // 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 provider = GetMetadataProvider(O, P, /*Create*/ false);
            if (IsUndefined(provider))
                return;
            return provider.OrdinaryGetOwnMetadata(MetadataKey, O, P);
        }
        // 3.1.5.1 OrdinaryDefineOwnMetadata(MetadataKey, MetadataValue, O, P)
        // https://rbuckton.github.io/reflect-metadata/#ordinarydefineownmetadata
        function OrdinaryDefineOwnMetadata(MetadataKey, MetadataValue, O, P) {
            var provider = GetMetadataProvider(O, P, /*Create*/ true);
            provider.OrdinaryDefineOwnMetadata(MetadataKey, MetadataValue, O, P);
        }
        // 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 provider = GetMetadataProvider(O, P, /*create*/ false);
            if (!provider) {
                return [];
            }
            return provider.OrdinaryOwnMetadataKeys(O, P);
        }
        // 6 ECMAScript Data Types 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;
        }
        function fail(e) {
            throw e;
        }
        // Global metadata registry
        // - Allows `import "reflect-metadata"` and `import "reflect-metadata/no-conflict"` to interoperate.
        // - Uses isolated metadata if `Reflect` is frozen before the registry can be installed.
        /**
         * Creates a registry used to allow multiple `reflect-metadata` providers.
         */
        function CreateMetadataRegistry() {
            var fallback;
            if (!IsUndefined(registrySymbol) &&
                typeof root.Reflect !== "undefined" &&
                !(registrySymbol in root.Reflect) &&
                typeof root.Reflect.defineMetadata === "function") {
                // interoperate with older version of `reflect-metadata` that did not support a registry.
                fallback = CreateFallbackProvider(root.Reflect);
            }
            var first;
            var second;
            var rest;
            var targetProviderMap = new _WeakMap();
            var registry = {
                registerProvider: registerProvider,
                getProvider: getProvider,
                setProvider: setProvider,
            };
            return registry;
            function registerProvider(provider) {
                if (!Object.isExtensible(registry)) {
                    throw new Error("Cannot add provider to a frozen registry.");
                }
                switch (true) {
                    case fallback === provider: break;
                    case IsUndefined(first):
                        first = provider;
                        break;
                    case first === provider: break;
                    case IsUndefined(second):
                        second = provider;
                        break;
                    case second === provider: break;
                    default:
                        if (rest === undefined)
                            rest = new _Set();
                        rest.add(provider);
                        break;
                }
            }
            function getProviderNoCache(O, P) {
                if (!IsUndefined(first)) {
                    if (first.isProviderFor(O, P))
                        return first;
                    if (!IsUndefined(second)) {
                        if (second.isProviderFor(O, P))
                            return first;
                        if (!IsUndefined(rest)) {
                            var iterator = GetIterator(rest);
                            while (true) {
                                var next = IteratorStep(iterator);
                                if (!next) {
                                    return undefined;
                                }
                                var provider = IteratorValue(next);
                                if (provider.isProviderFor(O, P)) {
                                    IteratorClose(iterator);
                                    return provider;
                                }
                            }
                        }
                    }
                }
                if (!IsUndefined(fallback) && fallback.isProviderFor(O, P)) {
                    return fallback;
                }
                return undefined;
            }
            function getProvider(O, P) {
                var providerMap = targetProviderMap.get(O);
                var provider;
                if (!IsUndefined(providerMap)) {
                    provider = providerMap.get(P);
                }
                if (!IsUndefined(provider)) {
                    return provider;
                }
                provider = getProviderNoCache(O, P);
                if (!IsUndefined(provider)) {
                    if (IsUndefined(providerMap)) {
                        providerMap = new _Map();
                        targetProviderMap.set(O, providerMap);
                    }
                    providerMap.set(P, provider);
                }
                return provider;
            }
            function hasProvider(provider) {
                if (IsUndefined(provider))
                    throw new TypeError();
                return first === provider || second === provider || !IsUndefined(rest) && rest.has(provider);
            }
            function setProvider(O, P, provider) {
                if (!hasProvider(provider)) {
                    throw new Error("Metadata provider not registered.");
                }
                var existingProvider = getProvider(O, P);
                if (existingProvider !== provider) {
                    if (!IsUndefined(existingProvider)) {
                        return false;
                    }
                    var providerMap = targetProviderMap.get(O);
                    if (IsUndefined(providerMap)) {
                        providerMap = new _Map();
                        targetProviderMap.set(O, providerMap);
                    }
                    providerMap.set(P, provider);
                }
                return true;
            }
        }
        /**
         * Gets or creates the shared registry of metadata providers.
         */
        function GetOrCreateMetadataRegistry() {
            var metadataRegistry;
            if (!IsUndefined(registrySymbol) && IsObject(root.Reflect) && Object.isExtensible(root.Reflect)) {
                metadataRegistry = root.Reflect[registrySymbol];
            }
            if (IsUndefined(metadataRegistry)) {
                metadataRegistry = CreateMetadataRegistry();
            }
            if (!IsUndefined(registrySymbol) && IsObject(root.Reflect) && Object.isExtensible(root.Reflect)) {
                Object.defineProperty(root.Reflect, registrySymbol, {
                    enumerable: false,
                    configurable: false,
                    writable: false,
                    value: metadataRegistry
                });
            }
            return metadataRegistry;
        }
        function CreateMetadataProvider(registry) {
            // [[Metadata]] internal slot
            // https://rbuckton.github.io/reflect-metadata/#ordinary-object-internal-methods-and-internal-slots
            var metadata = new _WeakMap();
            var provider = {
                isProviderFor: function (O, P) {
                    var targetMetadata = metadata.get(O);
                    if (IsUndefined(targetMetadata))
                        return false;
                    return targetMetadata.has(P);
                },
                OrdinaryDefineOwnMetadata: OrdinaryDefineOwnMetadata,
                OrdinaryHasOwnMetadata: OrdinaryHasOwnMetadata,
                OrdinaryGetOwnMetadata: OrdinaryGetOwnMetadata,
                OrdinaryOwnMetadataKeys: OrdinaryOwnMetadataKeys,
                OrdinaryDeleteMetadata: OrdinaryDeleteMetadata,
            };
            metadataRegistry.registerProvider(provider);
            return provider;
            function GetOrCreateMetadataMap(O, P, Create) {
                var targetMetadata = metadata.get(O);
                var createdTargetMetadata = false;
                if (IsUndefined(targetMetadata)) {
                    if (!Create)
                        return undefined;
                    targetMetadata = new _Map();
                    metadata.set(O, targetMetadata);
                    createdTargetMetadata = true;
                }
                var metadataMap = targetMetadata.get(P);
                if (IsUndefined(metadataMap)) {
                    if (!Create)
                        return undefined;
                    metadataMap = new _Map();
                    targetMetadata.set(P, metadataMap);
                    if (!registry.setProvider(O, P, provider)) {
                        targetMetadata.delete(P);
                        if (createdTargetMetadata) {
                            metadata.delete(O);
                        }
                        throw new Error("Wrong provider for target.");
                    }
                }
                return metadataMap;
            }
            // 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));
            }
            // 3.1.4.1 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);
            }
            // 3.1.7.1 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++;
                }
            }
            function OrdinaryDeleteMetadata(MetadataKey, O, P) {
                var metadataMap = GetOrCreateMetadataMap(O, P, /*Create*/ false);
                if (IsUndefined(metadataMap))
                    return false;
                if (!metadataMap.delete(MetadataKey))
                    return false;
                if (metadataMap.size === 0) {
                    var targetMetadata = metadata.get(O);
                    if (!IsUndefined(targetMetadata)) {
                        targetMetadata.delete(P);
                        if (targetMetadata.size === 0) {
                            metadata.delete(targetMetadata);
                        }
                    }
                }
                return true;
            }
        }
        function CreateFallbackProvider(reflect) {
            var defineMetadata = reflect.defineMetadata, hasOwnMetadata = reflect.hasOwnMetadata, getOwnMetadata = reflect.getOwnMetadata, getOwnMetadataKeys = reflect.getOwnMetadataKeys, deleteMetadata = reflect.deleteMetadata;
            var metadataOwner = new _WeakMap();
            var provider = {
                isProviderFor: function (O, P) {
                    var metadataPropertySet = metadataOwner.get(O);
                    if (!IsUndefined(metadataPropertySet) && metadataPropertySet.has(P)) {
                        return true;
                    }
                    if (getOwnMetadataKeys(O, P).length) {
                        if (IsUndefined(metadataPropertySet)) {
                            metadataPropertySet = new _Set();
                            metadataOwner.set(O, metadataPropertySet);
                        }
                        metadataPropertySet.add(P);
                        return true;
                    }
                    return false;
                },
                OrdinaryDefineOwnMetadata: defineMetadata,
                OrdinaryHasOwnMetadata: hasOwnMetadata,
                OrdinaryGetOwnMetadata: getOwnMetadata,
                OrdinaryOwnMetadataKeys: getOwnMetadataKeys,
                OrdinaryDeleteMetadata: deleteMetadata,
            };
            return provider;
        }
        /**
         * Gets the metadata provider for an object. If the object has no metadata provider and this is for a create operation,
         * then this module's metadata provider is assigned to the object.
         */
        function GetMetadataProvider(O, P, Create) {
            var registeredProvider = metadataRegistry.getProvider(O, P);
            if (!IsUndefined(registeredProvider)) {
                return registeredProvider;
            }
            if (Create) {
                if (metadataRegistry.setProvider(O, P, metadataProvider)) {
                    return metadataProvider;
                }
                throw new Error("Illegal state.");
            }
            return undefined;
        }
    });
})(Reflect || (Reflect = {}));