koa-cors

library0.0.16jsnpmunverified

CORS middleware for Koa (v0.0.16). Inspired by node-cors, this middleware adds Cross-Origin Resource Sharing (CORS) headers to Koa responses. It supports all standard CORS options: origin, expose, maxAge, credentials, methods, and headers. It is a simple, lightweight solution for enabling CORS in Koa apps, but note that the package is old and the Koa ecosystem has evolved significantly since v1. Unmaintained since 2016; consider using @koa/cors for modern Koa 2.x.

web-framework http-networking auth-security

npm install koa-cors

github ↗package ↗

INSTALL

IMPORT

SIG · KOA-CORS

koa-cors

web-frameworkjavascriptv0.0.16

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

default

✓ const cors = require('koa-cors');

This package is CJS-only and has no default or named exports.

Shows basic Koa app with CORS enabled reflecting request origin.

const Koa = require('koa'); const cors = require('koa-cors'); const app = new Koa(); app.use(cors({ origin: true })); app.use(async ctx => { ctx.body = 'Hello World'; }); app.listen(3000);

Debug

Known issues

gotchakoa-cors is designed for Koa v1 (generator-based middleware). Koa v2 uses async/await and may have compatibility issues.

fix

Use @koa/cors instead, which supports Koa 2.x.

affects: 0.0.0-0.0.16

gotchaPackage unmaintained since 2016. No updates for compatibility with modern Node.js.

fix

Migrate to active alternatives like @koa/cors or koa2-cors.

affects: 0.0.0-0.0.16

Errors

Common errors & fixes

TypeError: app.use() requires a generator function

Koa v2 uses async functions, but koa-cors expects a generator (Koa v1).

fix

Use @koa/cors or wrap with koa-convert: const convert = require('koa-convert'); app.use(convert(cors()));

Upgrade

Version history

0.0.16latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

13 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/evert0n/koa-cors ↗

packagehttps://www.npmjs.com/package/koa-cors ↗