# Installation > `npm install --save @types/component-emitter` # Summary This package contains type definitions for component-emitter (https://www.npmjs.com/package/component-emitter). # Details Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/component-emitter. ## [index.d.ts](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/component-emitter/index.d.ts) ````ts // Type definitions for component-emitter v1.2.1 // Project: https://www.npmjs.com/package/component-emitter // Definitions by: Peter Snider // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped // TypeScript Version: 2.2 interface Emitter { on(event: Event, listener: Function): Emitter; once(event: Event, listener: Function): Emitter; off(event?: Event, listener?: Function): Emitter; emit(event: Event, ...args: any[]): Emitter; listeners(event: Event): Function[]; hasListeners(event: Event): boolean; removeListener(event?: Event, listener?: Function): Emitter; removeEventListener(event?: Event, listener?: Function): Emitter; removeAllListeners(event?: Event): Emitter; } declare const Emitter: { (obj?: object): Emitter; new (obj?: object): Emitter; }; export = Emitter; ```` ### Additional Details * Last updated: Thu, 14 Oct 2021 19:01:31 GMT * Dependencies: none * Global values: none # Credits These definitions were written by [Peter Snider](https://github.com/psnider).