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{ ObjectKeyAny } from '../mod.ts';/*! *****************************************************************************Copyright (C) Microsoft. All rights reserved.Licensed under the Apache License, Version 2.0 (the "License"); you may not usethis file except in compliance with the License. You may obtain a copy of theLicense at http://www.apache.org/licenses/LICENSE-2.0
THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANYKIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIEDWARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,MERCHANTABLITY OR NON-INFRINGEMENT.
See the Apache Version 2.0 License for specific language governing permissionsand limitations under the License.***************************************************************************** */export namespace Reflect { // Metadata Proposal // https://rbuckton.github.io/reflect-metadata/
type HashMap<V> = Record<string, V>;
interface BufferLike { [offset: number]: number; length: number; }
type IteratorResult<T> = { value: T, done: false } | { value: never, done: true };
interface Iterator<T> { next(value?: any): IteratorResult<T>; throw?(value: any): IteratorResult<T>; return?(value?: T): IteratorResult<T>; }
interface Iterable<T> { "@@iterator"(): Iterator<T>; }
interface IterableIterator<T> extends Iterator<T> { "@@iterator"(): IterableIterator<T>; }
interface Map<K, V> extends Iterable<[K, V]> { size: number; has(key: K): boolean; get(key: K): V; set(key: K, value?: V): this; delete(key: K): boolean; clear(): void; keys(): IterableIterator<K>; values(): IterableIterator<V>; entries(): IterableIterator<[K, V]>; }
interface MapConstructor { new (): Map<any, any>; new <K, V>(): Map<K, V>; prototype: Map<any, any>; }
interface Set<T> extends Iterable<T> { size: number; has(value: T): boolean; add(value: T): this; delete(value: T): boolean; clear(): void; keys(): IterableIterator<T>; values(): IterableIterator<T>; entries(): IterableIterator<[T, T]>; }
interface SetConstructor { new (): Set<any>; new <T>(): Set<T>; prototype: Set<any>; }
interface WeakMap<K, V> { clear(): void; delete(key: K): boolean; get(key: K): V; has(key: K): boolean; set(key: K, value?: V): WeakMap<K, V>; }
interface WeakMapConstructor { new (): WeakMap<any, any>; new <K, V>(): WeakMap<K, V>; prototype: WeakMap<any, any>; }
type MemberDecorator = <T>(target: Object, propertyKey: string | symbol, descriptor?: TypedPropertyDescriptor<T>) => TypedPropertyDescriptor<T> | void; declare const Symbol: { iterator: symbol, toPrimitive: symbol }; declare const Set: SetConstructor; declare const WeakMap: WeakMapConstructor; declare const Map: MapConstructor; declare const global: any; declare const crypto: Crypto; declare const msCrypto: Crypto; declare const process: any;
/** * Applies a set of decorators to a target object. * @param decorators An array of decorators. * @param target The target object. * @returns The result of applying the provided decorators. * @remarks Decorators are applied in reverse order of their positions in the array. * @example * * class Example { } * * // constructor * Example = Reflect.decorate(decoratorsArray, Example); * */ export declare function decorate(decorators: ClassDecorator[], target: Function): Function;
/** * 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 The property key to decorate. * @param attributes A property descriptor. * @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; * * static staticMethod() { } * method() { } * } * * // 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"))); * */ export declare function decorate(decorators: (PropertyDecorator | MethodDecorator)[], target: any, propertyKey: string | symbol, attributes?: PropertyDescriptor | null): PropertyDescriptor | undefined;
/** * 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 The property key to decorate. * @param attributes A property descriptor. * @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; * * static staticMethod() { } * method() { } * } * * // 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"))); * */ export declare function decorate(decorators: (PropertyDecorator | MethodDecorator)[], target: any, propertyKey: string | symbol, attributes: PropertyDescriptor): PropertyDescriptor;
/** * 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() { } * } * */ export declare function metadata(metadataKey: any, metadataValue: any): { (target: Function): void; (target: any, propertyKey: string | symbol): void; };
/** * 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. * @example * * class Example { * } * * // constructor * Reflect.defineMetadata("custom:annotation", options, Example); * * // decorator factory as metadata-producing annotation. * function MyAnnotation(options): ClassDecorator { * return target => Reflect.defineMetadata("custom:annotation", options, target); * } * */ export declare function defineMetadata(metadataKey: any, metadataValue: any, target: any): void;
/** * 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 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; * * static staticMethod(p) { } * method(p) { } * } * * // property (on constructor) * Reflect.defineMetadata("custom:annotation", Number, Example, "staticProperty"); * * // property (on prototype) * Reflect.defineMetadata("custom:annotation", Number, Example.prototype, "property"); * * // method (on constructor) * Reflect.defineMetadata("custom:annotation", Number, Example, "staticMethod"); * * // method (on prototype) * Reflect.defineMetadata("custom:annotation", Number, Example.prototype, "method"); * * // decorator factory as metadata-producing annotation. * function MyAnnotation(options): PropertyDecorator { * return (target, key) => Reflect.defineMetadata("custom:annotation", options, target, key); * } * */ export declare function defineMetadata(metadataKey: any, metadataValue: any, target: any, propertyKey: string | symbol): void;
/** * 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. * @returns `true` if the metadata key was defined on the target object or its prototype chain; otherwise, `false`. * @example * * class Example { * } * * // constructor * result = Reflect.hasMetadata("custom:annotation", Example); * */ export declare function hasMetadata(metadataKey: any, target: any): boolean;
/** * 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 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; * * static staticMethod(p) { } * method(p) { } * } * * // 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"); * */ export declare function hasMetadata(metadataKey: any, target: any, propertyKey: string | symbol): boolean;
/** * 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. * @returns `true` if the metadata key was defined on the target object; otherwise, `false`. * @example * * class Example { * } * * // constructor * result = Reflect.hasOwnMetadata("custom:annotation", Example); * */ export declare function hasOwnMetadata(metadataKey: any, target: any): boolean;
/** * 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 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; * * static staticMethod(p) { } * method(p) { } * } * * // 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"); * */ export declare function hasOwnMetadata(metadataKey: any, target: any, propertyKey: string | symbol): boolean;
/** * 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. * @returns The metadata value for the metadata key if found; otherwise, `undefined`. * @example * * class Example { * } * * // constructor * result = Reflect.getMetadata("custom:annotation", Example); * */ export declare function getMetadata(metadataKey: any, target: any): any;
/** * 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 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; * * static staticMethod(p) { } * method(p) { } * } * * // 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"); * */ export declare function getMetadata(metadataKey: any, target: any, propertyKey: string | symbol): any;
/** * 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. * @returns The metadata value for the metadata key if found; otherwise, `undefined`. * @example * * class Example { * } * * // constructor * result = Reflect.getOwnMetadata("custom:annotation", Example); * */ export declare function getOwnMetadata(metadataKey: any, target: any): any;
/** * 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 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; * * static staticMethod(p) { } * method(p) { } * } * * // 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"); * */ export declare function getOwnMetadata(metadataKey: any, target: any, propertyKey: string | symbol): any;
/** * Gets the metadata keys defined on the target object or its prototype chain. * @param target The target object on which the metadata is defined. * @returns An array of unique metadata keys. * @example * * class Example { * } * * // constructor * result = Reflect.getMetadataKeys(Example); * */ export declare function getMetadataKeys(target: any): any[];
/** * 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 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; * * static staticMethod(p) { } * method(p) { } * } * * // 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"); * */ export declare function getMetadataKeys(target: any, propertyKey: string | symbol): any[];
/** * Gets the unique metadata keys defined on the target object. * @param target The target object on which the metadata is defined. * @returns An array of unique metadata keys. * @example * * class Example { * } * * // constructor * result = Reflect.getOwnMetadataKeys(Example); * */ export declare function getOwnMetadataKeys(target: any): any[];
/** * Gets the unique metadata keys defined on the target object. * @param target The target object on which the metadata is defined. * @param propertyKey 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; * * static staticMethod(p) { } * method(p) { } * } * * // 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"); * */ export declare function getOwnMetadataKeys(target: any, propertyKey: string | symbol): any[];
/** * 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. * @returns `true` if the metadata entry was found and deleted; otherwise, false. * @example * * class Example { * } * * // constructor * result = Reflect.deleteMetadata("custom:annotation", Example); * */ export declare function deleteMetadata(metadataKey: any, target: any): boolean;
/** * 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 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; * * static staticMethod(p) { } * method(p) { } * } * * // 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"); * */ export declare function deleteMetadata(metadataKey: any, target: any, propertyKey: string | symbol): boolean; declare var self: ObjectKeyAny; (function (this: any, factory: (exporter: <K extends keyof typeof Reflect>(key: K, value: typeof Reflect[K]) => void) => void) { const root = typeof global === "object" ? global : typeof self === "object" ? self : typeof this === "object" ? this : Function("return this;")();
let exporter = makeExporter(Reflect); if (typeof root.Reflect === "undefined") { root.Reflect = Reflect; } else { exporter = makeExporter(root.Reflect, exporter); }
factory(exporter);
function makeExporter(target: typeof Reflect, previous?: <K extends keyof typeof Reflect>(key: K, value: typeof Reflect[K]) => void) { return <K extends keyof typeof Reflect>(key: K, value: typeof Reflect[K]) => { if (typeof target[key] !== "function") { Object.defineProperty(target, key, { configurable: true, writable: true, value }); } if (previous) previous(key, value); }; } }) (function (exporter) { const hasOwn = Object.prototype.hasOwnProperty;
// feature test for Symbol support const supportsSymbol = typeof Symbol === "function"; const toPrimitiveSymbol = supportsSymbol && typeof Symbol.toPrimitive !== "undefined" ? Symbol.toPrimitive : "@@toPrimitive"; const iteratorSymbol = supportsSymbol && typeof Symbol.iterator !== "undefined" ? Symbol.iterator : "@@iterator"; const supportsCreate = typeof Object.create === "function"; // feature test for Object.create support const supportsProto = { __proto__: [] } instanceof Array; // feature test for __proto__ support const downLevel = !supportsCreate && !supportsProto;
const HashMap = { // create an object in dictionary mode (a.k.a. "slow" mode in v8) create: supportsCreate ? <V>() => MakeDictionary(Object.create(null) as HashMap<V>) : supportsProto ? <V>() => MakeDictionary({ __proto__: null as any } as HashMap<V>) : <V>() => MakeDictionary({} as HashMap<V>),
has: downLevel ? <V>(map: HashMap<V>, key: string | number | symbol) => hasOwn.call(map, key) : <V>(map: HashMap<V>, key: string | number | symbol) => key in map,
get: downLevel ? <V>(map: HashMap<V>, key: string | number | symbol): V | undefined => hasOwn.call(map, key) ? map[key as string | number] : undefined : <V>(map: HashMap<V>, key: string | number | symbol): V | undefined => map[key as string | number], };
// Load global or shim versions of Map, Set, and WeakMap const functionPrototype = Object.getPrototypeOf(Function); const usePolyfill = typeof process === "object" && process.env && process.env["REFLECT_METADATA_USE_MAP_POLYFILL"] === "true"; const _Map: typeof Map = !usePolyfill && typeof Map === "function" && typeof Map.prototype.entries === "function" ? Map : CreateMapPolyfill(); const _Set: typeof Set = !usePolyfill && typeof Set === "function" && typeof Set.prototype.entries === "function" ? Set : CreateSetPolyfill(); const _WeakMap: typeof WeakMap = !usePolyfill && typeof WeakMap === "function" ? WeakMap : CreateWeakMapPolyfill();
// [[Metadata]] internal slot // https://rbuckton.github.io/reflect-metadata/#ordinary-object-internal-methods-and-internal-slots const Metadata = new _WeakMap<any, Map<string | symbol | undefined, Map<any, any>>>();
// function decorate(decorators: ClassDecorator[], target: Function): Function; // function decorate(decorators: (PropertyDecorator | MethodDecorator)[], target: any, propertyKey: string | symbol, attributes?: PropertyDescriptor | null): PropertyDescriptor | undefined; // function decorate(decorators: (PropertyDecorator | MethodDecorator)[], target: any, propertyKey: string | symbol, attributes: PropertyDescriptor): PropertyDescriptor;
/** * 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: (ClassDecorator | MemberDecorator)[], target: any, propertyKey?: string | symbol, attributes?: PropertyDescriptor | null): PropertyDescriptor | Function | undefined { 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(<MemberDecorator[]>decorators, target, propertyKey, attributes); } else { if (!IsArray(decorators)) throw new TypeError(); if (!IsConstructor(target)) throw new TypeError(); return DecorateConstructor(<ClassDecorator[]>decorators, <Function>target); } }
exporter("decorate", <any>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: any, metadataValue: any) { function decorator(target: Function): void; function decorator(target: any, propertyKey: string | symbol): void; function decorator(target: any, propertyKey?: string | symbol): void { if (!IsObject(target)) throw new TypeError(); if (!IsUndefined(propertyKey) && !IsPropertyKey(propertyKey)) throw new TypeError(); OrdinaryDefineOwnMetadata(metadataKey, metadataValue, target, propertyKey); } return decorator; }
exporter("metadata", metadata);
// 4.1.3 Reflect.defineMetadata(metadataKey, metadataValue, target [, propertyKey]) // https://rbuckton.github.io/reflect-metadata/#reflect.definemetadata
function defineMetadata(metadataKey: any, metadataValue: any, target: any): void; function defineMetadata(metadataKey: any, metadataValue: any, target: any, propertyKey: string | symbol): void;
/** * 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: any, metadataValue: any, target: any, propertyKey?: string | symbol): void { if (!IsObject(target)) throw new TypeError(); if (!IsUndefined(propertyKey)) propertyKey = ToPropertyKey(propertyKey); return OrdinaryDefineOwnMetadata(metadataKey, metadataValue, target, propertyKey); }
exporter("defineMetadata", defineMetadata);
// 4.1.4 Reflect.hasMetadata(metadataKey, target [, propertyKey]) // https://rbuckton.github.io/reflect-metadata/#reflect.hasmetadata
function hasMetadata(metadataKey: any, target: any): boolean; function hasMetadata(metadataKey: any, target: any, propertyKey: string | symbol): boolean;
/** * 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: any, target: any, propertyKey?: string | symbol): boolean { if (!IsObject(target)) throw new TypeError(); if (!IsUndefined(propertyKey)) propertyKey = ToPropertyKey(propertyKey); return OrdinaryHasMetadata(metadataKey, target, propertyKey); }
exporter("hasMetadata", hasMetadata);
// 4.1.5 Reflect.hasOwnMetadata(metadataKey, target [, propertyKey]) // https://rbuckton.github.io/reflect-metadata/#reflect-hasownmetadata
function hasOwnMetadata(metadataKey: any, target: any): boolean; function hasOwnMetadata(metadataKey: any, target: any, propertyKey: string | symbol): boolean;
/** * 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: any, target: any, propertyKey?: string | symbol): boolean { if (!IsObject(target)) throw new TypeError(); if (!IsUndefined(propertyKey)) propertyKey = ToPropertyKey(propertyKey); return OrdinaryHasOwnMetadata(metadataKey, target, propertyKey); }
exporter("hasOwnMetadata", hasOwnMetadata);
// 4.1.6 Reflect.getMetadata(metadataKey, target [, propertyKey]) // https://rbuckton.github.io/reflect-metadata/#reflect-getmetadata
function getMetadata(metadataKey: any, target: any): any; function getMetadata(metadataKey: any, target: any, propertyKey: string | symbol): any;
/** * 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: any, target: any, propertyKey?: string | symbol): any { if (!IsObject(target)) throw new TypeError(); if (!IsUndefined(propertyKey)) propertyKey = ToPropertyKey(propertyKey); return OrdinaryGetMetadata(metadataKey, target, propertyKey); }
exporter("getMetadata", getMetadata);
// 4.1.7 Reflect.getOwnMetadata(metadataKey, target [, propertyKey]) // https://rbuckton.github.io/reflect-metadata/#reflect-getownmetadata
function getOwnMetadata(metadataKey: any, target: any): any; function getOwnMetadata(metadataKey: any, target: any, propertyKey: string | symbol): any;
/** * 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: any, target: any, propertyKey?: string | symbol): any { if (!IsObject(target)) throw new TypeError(); if (!IsUndefined(propertyKey)) propertyKey = ToPropertyKey(propertyKey); return OrdinaryGetOwnMetadata(metadataKey, target, propertyKey); }
exporter("getOwnMetadata", getOwnMetadata);
// 4.1.8 Reflect.getMetadataKeys(target [, propertyKey]) // https://rbuckton.github.io/reflect-metadata/#reflect-getmetadatakeys
function getMetadataKeys(target: any): any[]; function getMetadataKeys(target: any, propertyKey: string | symbol): any[];
/** * 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: any, propertyKey?: string | symbol): any[] { if (!IsObject(target)) throw new TypeError(); if (!IsUndefined(propertyKey)) propertyKey = ToPropertyKey(propertyKey); return OrdinaryMetadataKeys(target, propertyKey); }
exporter("getMetadataKeys", getMetadataKeys);
// 4.1.9 Reflect.getOwnMetadataKeys(target [, propertyKey]) // https://rbuckton.github.io/reflect-metadata/#reflect-getownmetadata
function getOwnMetadataKeys(target: any): any[]; function getOwnMetadataKeys(target: any, propertyKey: string | symbol): any[];
/** * 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: any, propertyKey?: string | symbol): any[] { if (!IsObject(target)) throw new TypeError(); if (!IsUndefined(propertyKey)) propertyKey = ToPropertyKey(propertyKey); return OrdinaryOwnMetadataKeys(target, propertyKey); }
exporter("getOwnMetadataKeys", getOwnMetadataKeys);
// 4.1.10 Reflect.deleteMetadata(metadataKey, target [, propertyKey]) // https://rbuckton.github.io/reflect-metadata/#reflect-deletemetadata
function deleteMetadata(metadataKey: any, target: any): boolean; function deleteMetadata(metadataKey: any, target: any, propertyKey: string | symbol): boolean;
/** * 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: any, target: any, propertyKey?: string | symbol): boolean { if (!IsObject(target)) throw new TypeError(); if (!IsUndefined(propertyKey)) propertyKey = ToPropertyKey(propertyKey); const metadataMap = GetOrCreateMetadataMap(target, propertyKey, /*Create*/ false); if (IsUndefined(metadataMap)) return false; if (!metadataMap.delete(metadataKey)) return false; if (metadataMap.size > 0) return true; const targetMetadata = Metadata.get(target); targetMetadata.delete(propertyKey); if (targetMetadata.size > 0) return true; Metadata.delete(target); return true; }
exporter("deleteMetadata", deleteMetadata);
function DecorateConstructor(decorators: ClassDecorator[], target: Function): Function { for (let i = decorators.length - 1; i >= 0; --i) { const decorator = decorators[i]; const decorated = decorator(target); if (!IsUndefined(decorated) && !IsNull(decorated)) { if (!IsConstructor(decorated)) throw new TypeError(); target = <Function>decorated; } } return target; }
function DecorateProperty(decorators: MemberDecorator[], target: any, propertyKey: string | symbol, descriptor: PropertyDescriptor | undefined): PropertyDescriptor | undefined { for (let i = decorators.length - 1; i >= 0; --i) { const decorator = decorators[i]; const decorated = decorator(target, propertyKey, descriptor); if (!IsUndefined(decorated) && !IsNull(decorated)) { if (!IsObject(decorated)) throw new TypeError(); descriptor = <PropertyDescriptor>decorated; } } return descriptor; }
// 2.1.1 GetOrCreateMetadataMap(O, P, Create) // https://rbuckton.github.io/reflect-metadata/#getorcreatemetadatamap function GetOrCreateMetadataMap(O: any, P: string | symbol | undefined, Create: true): Map<any, any>; function GetOrCreateMetadataMap(O: any, P: string | symbol | undefined, Create: false): Map<any, any> | undefined; function GetOrCreateMetadataMap(O: any, P: string | symbol | undefined, Create: boolean): Map<any, any> | undefined { let targetMetadata = Metadata.get(O); if (IsUndefined(targetMetadata)) { if (!Create) return undefined; targetMetadata = new _Map<string | symbol | undefined, Map<any, any>>(); Metadata.set(O, targetMetadata); } let metadataMap = targetMetadata.get(P); if (IsUndefined(metadataMap)) { if (!Create) return undefined; metadataMap = new _Map<any, any>(); targetMetadata.set(P, metadataMap); } return metadataMap; }
// 3.1.1.1 OrdinaryHasMetadata(MetadataKey, O, P) // https://rbuckton.github.io/reflect-metadata/#ordinaryhasmetadata function OrdinaryHasMetadata(MetadataKey: any, O: any, P: string | symbol | undefined): boolean { const hasOwn = OrdinaryHasOwnMetadata(MetadataKey, O, P); if (hasOwn) return true; const 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: any, O: any, P: string | symbol | undefined): boolean { const 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: any, O: any, P: string | symbol | undefined): any { const hasOwn = OrdinaryHasOwnMetadata(MetadataKey, O, P); if (hasOwn) return OrdinaryGetOwnMetadata(MetadataKey, O, P); const 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: any, O: any, P: string | symbol | undefined): any { const 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: any, MetadataValue: any, O: any, P: string | symbol | undefined): void { const 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: any, P: string | symbol | undefined): any[] { const ownKeys = OrdinaryOwnMetadataKeys(O, P); const parent = OrdinaryGetPrototypeOf(O); if (parent === null) return ownKeys; const parentKeys = OrdinaryMetadataKeys(parent, P); if (parentKeys.length <= 0) return ownKeys; if (ownKeys.length <= 0) return parentKeys; const set = new _Set<any>(); const keys: any[] = []; for (const key of ownKeys) { const hasKey = set.has(key); if (!hasKey) { set.add(key); keys.push(key); } } for (const key of parentKeys) { const 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: any, P: string | symbol | undefined): any[] { const keys: any[] = []; const metadataMap = GetOrCreateMetadataMap(O, P, /*Create*/ false); if (IsUndefined(metadataMap)) return keys; const keysObj = metadataMap.keys(); const iterator = GetIterator(keysObj); let k = 0; while (true) { const next = IteratorStep(iterator); if (!next) { keys.length = k; return keys; } const 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: any): Tag { if (x === null) return Tag.Null; switch (typeof x) { case "undefined": return Tag.Undefined; case "boolean": return Tag.Boolean; case "string": return Tag.String; case "symbol": return Tag.Symbol; case "number": return Tag.Number; case "object": return x === null ? Tag.Null : Tag.Object; default: return Tag.Object; } }
// 6.1 ECMAScript Language Types // https://tc39.github.io/ecma262/#sec-ecmascript-language-types const enum Tag { Undefined, Null, Boolean, String, Symbol, Number, Object }
// 6.1.1 The Undefined Type // https://tc39.github.io/ecma262/#sec-ecmascript-language-types-undefined-type function IsUndefined(x: any): x is undefined { return x === undefined; }
// 6.1.2 The Null Type // https://tc39.github.io/ecma262/#sec-ecmascript-language-types-null-type function IsNull(x: any): x is null { return x === null; }
// 6.1.5 The Symbol Type // https://tc39.github.io/ecma262/#sec-ecmascript-language-types-symbol-type function IsSymbol(x: any): x is symbol { return typeof x === "symbol"; }
// 6.1.7 The Object Type // https://tc39.github.io/ecma262/#sec-object-type function IsObject<T>(x: T | undefined | null | boolean | string | symbol | number): x is T { 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: any, PreferredType?: Tag): undefined | null | boolean | string | symbol | number { switch (Type(input)) { case Tag.Undefined: return input; case Tag.Null: return input; case Tag.Boolean: return input; case Tag.String: return input; case Tag.Symbol: return input; case Tag.Number: return input; } const hint: "string" | "number" | "default" = PreferredType === Tag.String ? "string" : PreferredType === Tag.Number ? "number" : "default"; const exoticToPrim = GetMethod(input, toPrimitiveSymbol); if (exoticToPrim !== undefined) { const 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: any, hint: "string" | "number"): undefined | null | boolean | string | symbol | number { if (hint === "string") { const toString = O.toString; if (IsCallable(toString)) { const result = toString.call(O); if (!IsObject(result)) return result; } const valueOf = O.valueOf; if (IsCallable(valueOf)) { const result = valueOf.call(O); if (!IsObject(result)) return result; } } else { const valueOf = O.valueOf; if (IsCallable(valueOf)) { const result = valueOf.call(O); if (!IsObject(result)) return result; } const toString = O.toString; if (IsCallable(toString)) { const result = toString.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: any): boolean { return !!argument; }
// 7.1.12 ToString(argument) // https://tc39.github.io/ecma262/#sec-tostring function ToString(argument: any): string { return "" + argument; }
// 7.1.14 ToPropertyKey(argument) // https://tc39.github.io/ecma262/#sec-topropertykey function ToPropertyKey(argument: any): string | symbol { const key = ToPrimitive(argument, Tag.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: any): argument is any[] { 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: any): argument is Function { // 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: any): argument is Function { // 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: any): argument is string | symbol { switch (Type(argument)) { case Tag.String: return true; case Tag.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: any, P: any): Function | undefined { const 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<T>(obj: Iterable<T>): Iterator<T> { const method = GetMethod(obj, iteratorSymbol); if (!IsCallable(method)) throw new TypeError(); // from Call const 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<T>(iterResult: IteratorResult<T>): T { return iterResult.value; }
// 7.4.5 IteratorStep(iterator) // https://tc39.github.io/ecma262/#sec-iteratorstep function IteratorStep<T>(iterator: Iterator<T>): IteratorResult<T> | false { const result = iterator.next(); return result.done ? false : result; }
// 7.4.6 IteratorClose(iterator, completion) // https://tc39.github.io/ecma262/#sec-iteratorclose function IteratorClose<T>(iterator: Iterator<T>) { const 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: any): any { const 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. const prototype = O.prototype; const 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. const 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(): MapConstructor { const cacheSentinel = {}; const arraySentinel: any[] = [];
class MapIterator<K, V, R extends (K | V | [K, V])> implements IterableIterator<R> { private _keys: K[]; private _values: V[]; private _index = 0; private _selector: (key: K, value: V) => R; constructor(keys: K[], values: V[], selector: (key: K, value: V) => R) { this._keys = keys; this._values = values; this._selector = selector; } "@@iterator"() { return this; } [iteratorSymbol]() { return this; } next(): IteratorResult<R> { const index = this._index; if (index >= 0 && index < this._keys.length) { const 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: <never>undefined, done: true }; } throw(error: any): IteratorResult<R> { if (this._index >= 0) { this._index = -1; this._keys = arraySentinel; this._values = arraySentinel; } throw error; } return(value?: R): IteratorResult<R> { if (this._index >= 0) { this._index = -1; this._keys = arraySentinel; this._values = arraySentinel; } return { value: <never>value, done: true }; } }
return class Map<K, V> { private _keys: K[] = []; private _values: (V | undefined)[] = []; private _cacheKey = cacheSentinel; private _cacheIndex = -2; get size() { return this._keys.length; } has(key: K): boolean { return this._find(key, /*insert*/ false) >= 0; } get(key: K): V | undefined { const index = this._find(key, /*insert*/ false); return index >= 0 ? this._values[index] : undefined; } set(key: K, value: V): this { const index = this._find(key, /*insert*/ true); this._values[index] = value; return this; } delete(key: K): boolean { const index = this._find(key, /*insert*/ false); if (index >= 0) { const size = this._keys.length; for (let 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; } clear(): void { this._keys.length = 0; this._values.length = 0; this._cacheKey = cacheSentinel; this._cacheIndex = -2; } keys() { return new MapIterator(this._keys, this._values, getKey); } values() { return new MapIterator(this._keys, this._values, getValue); } entries() { return new MapIterator(this._keys, this._values, getEntry); } "@@iterator"() { return this.entries(); } [iteratorSymbol]() { return this.entries(); } private _find(key: K, insert?: boolean): number { 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; } };
function getKey<K, V>(key: K, _: V) { return key; }
function getValue<K, V>(_: K, value: V) { return value; }
function getEntry<K, V>(key: K, value: V) { return [key, value] as [K, V]; } }
// naive Set shim function CreateSetPolyfill(): SetConstructor { return class Set<T> { private _map = new _Map<any, any>(); get size() { return this._map.size; } has(value: T): boolean { return this._map.has(value); } add(value: T): Set<T> { return this._map.set(value, value), this; } delete(value: T): boolean { return this._map.delete(value); } clear(): void { this._map.clear(); } keys() { return this._map.keys(); } values() { return this._map.values(); } entries() { return this._map.entries(); } "@@iterator"() { return this.keys(); } [iteratorSymbol]() { return this.keys(); } }; }
// naive WeakMap shim function CreateWeakMapPolyfill(): WeakMapConstructor { const UUID_SIZE = 16; const keys = HashMap.create<boolean>(); const rootKey = CreateUniqueKey(); return class WeakMap<K, V> { private _key = CreateUniqueKey(); has(target: K): boolean { const table = GetOrCreateWeakMapTable<K>(target, /*create*/ false); return table !== undefined ? HashMap.has(table, this._key) : false; } get(target: K): V { const table = GetOrCreateWeakMapTable<K>(target, /*create*/ false); return table !== undefined ? HashMap.get(table, this._key) : undefined; } set(target: K, value: V): WeakMap<K, V> { const table = GetOrCreateWeakMapTable<K>(target, /*create*/ true); table[this._key] = value; return this; } delete(target: K): boolean { const table = GetOrCreateWeakMapTable<K>(target, /*create*/ false); return table !== undefined ? delete table[this._key] : false; } clear(): void { // NOTE: not a real clear, just makes the previous data unreachable this._key = CreateUniqueKey(); } };
function CreateUniqueKey(): string { let key: string; do key = "@@WeakMap@@" + CreateUUID(); while (HashMap.has(keys, key)); keys[key] = true; return key; }
function GetOrCreateWeakMapTable<K>(target: K, create: true): HashMap<any>; function GetOrCreateWeakMapTable<K>(target: K, create: false): HashMap<any> | undefined; function GetOrCreateWeakMapTable<K>(target: K, create: boolean): HashMap<any> | undefined { if (!hasOwn.call(target, rootKey)) { if (!create) return undefined; Object.defineProperty(target, rootKey, { value: HashMap.create<any>() }); } return (<any>target)[rootKey]; }
function FillRandomBytes(buffer: BufferLike, size: number): BufferLike { for (let i = 0; i < size; ++i) buffer[i] = Math.random() * 0xff | 0; return buffer; }
function GenRandomBytes(size: number): BufferLike { if (typeof Uint8Array === "function") { if (typeof crypto !== "undefined") return crypto.getRandomValues(new Uint8Array(size)) as Uint8Array; if (typeof msCrypto !== "undefined") return msCrypto.getRandomValues(new Uint8Array(size)) as Uint8Array; return FillRandomBytes(new Uint8Array(size), size); } return FillRandomBytes(new Array(size), size); }
function CreateUUID() { const data = GenRandomBytes(UUID_SIZE); // mark as random - RFC 4122 § 4.4 data[6] = data[6] & 0x4f | 0x40; data[8] = data[8] & 0xbf | 0x80; let result = ""; for (let offset = 0; offset < UUID_SIZE; ++offset) { const 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<T>(obj: T): T { (<any>obj).__ = undefined; delete (<any>obj).__; return obj; } });}