allowedMethods() throws a runtime error when the host of its router fails to match. Additionally it would throw if you never added routes() to your koa middleware chain.
Example:
import Router from "@koa/router";
import Koa from "koa";
const app = new Koa();
const router = new Router({ host: "aaaa" });
app.use(router.routes());
app.use(router.allowedMethods());
app.listen(8888);
$ curl localhost:8888/
Internal Server Error
Error:
TypeError: Cannot read properties of undefined (reading 'length')
at /Users/marcel/braid/web/.pnpm/@koa+router@12.0.1/node_modules/@koa/router/lib/router.js:487:41
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
Checklist
[x] I have ensured my pull request is not behind the main or master branch of the original repository.
[x] I have rebased all commits where necessary so that reviewing this pull request can be done without having to merge it first.
[x] I have written a commit message that passes commitlint linting.
[x] I have ensured that my code changes pass linting tests.
[x] I have ensured that my code changes pass unit tests.
[x] I have described my pull request and the reasons for code changes along with context if necessary.
allowedMethods()throws a runtime error when thehostof its router fails to match. Additionally it would throw if you never addedroutes()to your koa middleware chain.Example:
Error:
Checklist