# Type alias Observer<T>

Observer<T>: {
next?(value): void;
}

An Observer is used to receive data from an Observable, and is supplied as an argument to subscribe.

#### Type Parameters

- T

#### Type declaration

- ##### next?:function

  - next(value): void

  - #### Parameters

    - value: T

    #### Returns void

    - Defined in common/temp/node_modules/.pnpm/redux@4.2.1/node_modules/redux/index.d.ts:254

- Defined in common/temp/node_modules/.pnpm/redux@4.2.1/node_modules/redux/index.d.ts:253