koajs
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 = new Koa();
onerror(app);
app.use(ctx => {
// foo();
ctx.body = fs.createReadStream('not exist');
});Options
onerror(app, options);- all: if
options.allexist, ignore negotiation - text: text error handler
- json: json error handler
- html: html error handler
- redirect: if accept
htmlortext, 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
Contributors
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