Package Exports
- koa-onerror
This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (koa-onerror) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
Readme
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 hackctx.onerror. - it is more customizable.
install
npm install koa-onerrorUsage
const fs = require('fs');
const koa = require('koa');
const onerror = require('koa-onerror');
const app = koa();
onerror(app);
app.use(function*(){
// foo();
this.body = fs.createReadStream('not exist');
});Options
onerror(app, options);- all: if options.all exist, ignore negotiation
- text: text error handler
- json: json error handler
- html: html error handler
- redirect: if accepct html, 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.