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b5fc949840
It appears that the intent is to return an unlisten function when `on` is called. The message bus implementations indicate that. However, the `MessageBus` abstract class returns `void` instead. Change to `on: () => void`. PR Close #62898
16 lines
558 B
TypeScript
16 lines
558 B
TypeScript
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.dev/license
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*/
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export type Parameters<F> = F extends (...args: infer T) => any ? T : never;
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export abstract class MessageBus<T> {
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abstract on<E extends keyof T>(topic: E, cb: T[E]): () => void;
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abstract once<E extends keyof T>(topic: E, cb: T[E]): void;
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abstract emit<E extends keyof T>(topic: E, args?: Parameters<T[E]>): boolean;
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abstract destroy(): void;
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}
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