# event-bus2

> event-bus2

Latest version **2.0.8** (published 2023-02-22) · MIT license · 0 weekly downloads

## Install

```sh
npm install event-bus2
pnpm add event-bus2
yarn add event-bus2
bun add event-bus2
```

## Health

**Score 15/100 (F)** — status: abandoned.

Positive: no vulnerabilities.

Warnings: low downloads; no types; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 2.0.8 |
| Published | 2023-02-22 |
| First published | 2022-07-19 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | CommonJS |
| Dependencies | 12 |
| Unpacked size | 6.6 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Author | xbw |
| Maintainers | xbw19975 |
| Keywords | tools, utils, event-bus, event-bus2 |

## Links

- npm: https://www.npmjs.com/package/event-bus2
- npm.io page: https://npm.io/package/event-bus2

## Dependencies (12)

- [json5](https://npm.io/package/json5.md) ^2.2.1
- [rollup](https://npm.io/package/rollup.md) ^2.74.1
- [core-js](https://npm.io/package/core-js.md) ^3.9.0
- [json-bigint](https://npm.io/package/json-bigint.md) ^1.0.0
- [html-beautify](https://npm.io/package/html-beautify.md) ^1.0.4
- [rollup-plugin-dts](https://npm.io/package/rollup-plugin-dts.md) ^4.2.2
- [rollup-plugin-terser](https://npm.io/package/rollup-plugin-terser.md) ^7.0.2
- [rollup-plugin-commonjs](https://npm.io/package/rollup-plugin-commonjs.md) ^10.1.0
- [rollup-plugin-typescript](https://npm.io/package/rollup-plugin-typescript.md) ^1.0.1
- [rollup-plugin-typescript2](https://npm.io/package/rollup-plugin-typescript2.md) ^0.31.2
- [rollup-plugin-node-resolve](https://npm.io/package/rollup-plugin-node-resolve.md) ^5.2.0
- [@rollup/plugin-node-resolve](https://npm.io/package/@rollup/plugin-node-resolve.md) ^13.3.0

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## Recent versions

- 2.0.8 (latest) — 2023-02-22
- 2.0.7 — 2022-08-03
- 2.0.6 — 2022-07-26
- 2.0.5 — 2022-07-19

## README

event-bus2 是一个事件发布订阅工具。

# 安装

```shell
npm i event-bus2
```

# 基础使用
需引入：

```js
import Bus from 'event-bus2';

//订阅
Bus.$on('订阅方法名称',(args)=>{
  // handle
});

//发布
Bus.$emit('订阅方法名称',args);

//取消订阅
Bus.$off('订阅方法名称');

```

### 注意: 因为订阅的方法存在闭包，所以如果想要在订阅方法回调中使用最新的变量（如reacr中 redux的值），编码可以如下
## 或者使用event-bus-hooks 中的useEventBus
```js
useEffect(() => {
    //订阅
    Bus.$on('订阅方法名称',(args)=>{
      console.log(reduxData);
    });
    return ()=>{
      // 取消订阅，防止重复订阅.
      Bus.$off('订阅方法名称');
    }
  }, [reduxData]);
```

# 开源协议

event-bus2 遵循 [MIT 协议](https://github.com/xbw19975/event-bus2)。

---
_Source: https://npm.io/package/event-bus2 · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._