@thi.ng/server/interceptors/inject-headers.js

Minimal HTTP server with declarative routing, static file serving and freely extensible via pre/post interceptors

const injectHeaders = (headers) => ({
  pre: (ctx) => {
    for (let header of Object.entries(headers)) {
      ctx.res.appendHeader(...header);
    }
    return true;
  }
});
export {
  injectHeaders
};