diff options
Diffstat (limited to 'cli/js/web/dom_iterable.ts')
-rw-r--r-- | cli/js/web/dom_iterable.ts | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/cli/js/web/dom_iterable.ts b/cli/js/web/dom_iterable.ts deleted file mode 100644 index 7e26a12a4..000000000 --- a/cli/js/web/dom_iterable.ts +++ /dev/null @@ -1,92 +0,0 @@ -// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license. - -import { requiredArguments } from "./util.ts"; -import { exposeForTest } from "../internals.ts"; - -// eslint-disable-next-line @typescript-eslint/no-explicit-any -export type Constructor<T = {}> = new (...args: any[]) => T; - -export interface DomIterable<K, V> { - keys(): IterableIterator<K>; - values(): IterableIterator<V>; - entries(): IterableIterator<[K, V]>; - [Symbol.iterator](): IterableIterator<[K, V]>; - forEach( - callback: (value: V, key: K, parent: this) => void, - // eslint-disable-next-line @typescript-eslint/no-explicit-any - thisArg?: any, - ): void; -} - -export function DomIterableMixin<K, V, TBase extends Constructor>( - Base: TBase, - dataSymbol: symbol, -): TBase & Constructor<DomIterable<K, V>> { - // we have to cast `this` as `any` because there is no way to describe the - // Base class in a way where the Symbol `dataSymbol` is defined. So the - // runtime code works, but we do lose a little bit of type safety. - - // Additionally, we have to not use .keys() nor .values() since the internal - // slot differs in type - some have a Map, which yields [K, V] in - // Symbol.iterator, and some have an Array, which yields V, in this case - // [K, V] too as they are arrays of tuples. - - const DomIterable = class extends Base { - *entries(): IterableIterator<[K, V]> { - // eslint-disable-next-line @typescript-eslint/no-explicit-any - for (const entry of (this as any)[dataSymbol]) { - yield entry; - } - } - - *keys(): IterableIterator<K> { - // eslint-disable-next-line @typescript-eslint/no-explicit-any - for (const [key] of (this as any)[dataSymbol]) { - yield key; - } - } - - *values(): IterableIterator<V> { - // eslint-disable-next-line @typescript-eslint/no-explicit-any - for (const [, value] of (this as any)[dataSymbol]) { - yield value; - } - } - - forEach( - callbackfn: (value: V, key: K, parent: this) => void, - // eslint-disable-next-line @typescript-eslint/no-explicit-any - thisArg?: any, - ): void { - requiredArguments( - `${this.constructor.name}.forEach`, - arguments.length, - 1, - ); - callbackfn = callbackfn.bind( - thisArg == null ? globalThis : Object(thisArg), - ); - // eslint-disable-next-line @typescript-eslint/no-explicit-any - for (const [key, value] of (this as any)[dataSymbol]) { - callbackfn(value, key, this); - } - } - - *[Symbol.iterator](): IterableIterator<[K, V]> { - // eslint-disable-next-line @typescript-eslint/no-explicit-any - for (const entry of (this as any)[dataSymbol]) { - yield entry; - } - } - }; - - // we want the Base class name to be the name of the class. - Object.defineProperty(DomIterable, "name", { - value: Base.name, - configurable: true, - }); - - return DomIterable; -} - -exposeForTest("DomIterableMixin", DomIterableMixin); |