CORS proxy

During surfing through internet you will find open APIs which are open ... yeah, but don't support CORS.

Grab this ready to use small node.js server which adds CORS headers. Simply use it as a proxy 😉

How to use it?

On your server/heroku/whatever

Set environment variable: URL_TARGET to your proxy target url. f.e.: https://example.com
npm ci (which is npm install but from package-lock.json)
npm start

Test it locally

Run it with parameter: npm start https://example.com

OR

Run it with environment variable URL_TARGET=https://example.com node server.js

Bonus: How to set env variable on Heroku