Fix function timeout for API endpoint

As described in 
netlify/next-on-netlify#66 (comment)

pages/api/test.js

@@ -1,6 +1,20 @@
 import admin from "firebase-admin";
 
 const test = async (req, res) => {
+ // Get function context to avoid timeout
+ // See: https://github.com/netlify/next-on-netlify/issues/66#issuecomment-719988804
+ const functionContext = req?.functionContext;
+
+ // If we are currently in a Netlify function (deployed on netlify.app or
+ // locally with netlify dev), do not wait for empty event loop.
+ // See: https://stackoverflow.com/a/39215697/6451879
+ // Skip during next dev.
+ if (functionContext) {
+ console.log("Setting callbackWaitsForEmptyEventLoop: false");
+ functionContext.callbackWaitsForEmptyEventLoop = false;
+ }
+
+ // Initialize firebase app
  if (!admin.apps.length) {
  admin.initializeApp({
  credential: admin.credential.cert({