koa-onerror

[![NPM version][npm-image]][npm-url]
[![Test coverage][codecov-image]][codecov-url]
[![Known Vulnerabilities][snyk-image]][snyk-url]
[![npm download][download-image]][download-url]

[npm-image]: https://img.shields.io/npm/v/koa-onerror.svg?style=flat
[npm-url]: https://npmjs.org/package/koa-onerror
[codecov-image]: https://codecov.io/gh/koajs/onerror/branch/master/graph/badge.svg
[codecov-url]: https://codecov.io/gh/koajs/onerror
[snyk-image]: https://snyk.io/test/npm/koa-onerror/badge.svg?style=flat-square
[snyk-url]: https://snyk.io/test/npm/koa-onerror
[download-image]: https://img.shields.io/npm/dm/koa-onerror.svg?style=flat-square
[download-url]: https://npmjs.org/package/koa-onerror

an error handler for koa, hack ctx.onerror.

different with koa-error:

- we can not just use try catch to handle all errors, steams' and events'
errors are directly handle by ctx.onerror, so if we want to handle all
errors in one place, the only way i can see is to hack ctx.onerror.
- it is more customizable.

install

``bash
npm install koa-onerror
`

Usage

`js
const fs = require('fs');
const Koa = require('koa');
const { onerror } = require('koa-onerror');

const app = new Koa();

onerror(app);

app.use(ctx => {
// foo();
ctx.body = fs.createReadStream('not exist');
});
`

Options

`js
onerror(app, options);
`

- all: if options.all exist, ignore negotiation
- text: text error handler
- json: json error handler
- html: html error handler
- redirect: if accept html or text, can redirect to another error page

check out default handler to write your own handler.

Status and Headers

koa-onerror will automatic set err.status as response status code, and err.headers` as response headers.

License

MIT

Contributors


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