# koa-lambda

**Repository Path**: SporeTeam/koa-lambda

## Basic Information

- **Project Name**: koa-lambda
- **Description**: A simple functional middleware that can use hooks for koa.


- **Primary Language**: JavaScript
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 1
- **Forks**: 0
- **Created**: 2022-02-23
- **Last Updated**: 2024-12-27

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README



# koa-lambda-middleware

A simple functional middleware that can use hooks for koa.


[中文文档](https://gitee.com/SporeTeam/koa-lambda/blob/master/readme.zh.md)

## usage

```javascript
const Koa = require('koa');
const { koaBody } = require('koa-body');
const koaLambda = require('koa-lambda-middleware');
const app = new Koa();


app.use(koaBody())
    .use(koaLambda({}, app));

app.listen(3333);
```



### file /src/foo.js

```javascript
const { useContext, useNext } = require('koa-lambda-middleware');

module.exports = {

    /*
        request:
        POST http://localhost:3333/foo/bar HTTP/1.1
        content-type: application/json
        {
            "args":[
                2,
                3
            ]
        }
        
        response:
        {
            "c": 5
        }
    */
    // It is a pure function.

    bar(a, b){
        return {
            c : a + b;
        }
    },

    

    /*
        request:
        POST http://localhost:3333/foo/baz HTTP/1.1
        content-type: application/json

        response:
        baz ok!
    */
    async baz(){
        // use hooks
        let ctx = useContext(); //koa ctx
        let next = useNext();   //koa next

        ctx.body = 'baz ok!'

        await next();
    }
}
```