async function signedFetch()

in tangram-js/sw.js [36:53]

• 13 lines of code
• 1 McCabe index (conditional complexity)

async function signedFetch(request) {
  const url = new URL(request.url);
  const path = url.pathname.slice(1).split("/");

  // update URL to point to Amazon Location
  url.pathname = `/maps/v0/maps/${path[0]}/tiles/${path.slice(1).join("/")}`;
  url.host = `maps.geo.${region}.amazonaws.com`;
  // strip params (Tangram generates an empty api_key param)
  url.search = "";

  const signed = Signer.signUrl(url.toString(), {
    access_key: credentials.accessKeyId,
    secret_key: credentials.secretAccessKey,
    session_token: credentials.sessionToken,
  });

  return fetch(signed);
}