http-assert
Assert with status codes. Like ctx.throw() in Koa, but with a guard.
Example
var assert = require('http-assert');
var ok = require('assert');
try {
assert(username == 'fjodor', 401, 'authentication failed');
} catch (err) {
ok(err.status == 401);
ok(err.message == 'authentication failed');
ok(err.expose);
}