Is My Function Not Resolving Correctly? Also It Won't Write To Firebase To The Databse. No Errors

I have a cloud function that runs with no errors, however, it won't write to the database after Promise.all I've tested this function in a web browser and the data seems to resolve

Solution 1:

It seems you are trying to use getIndex when it is still not available, take a look into async operations... using async/await you can restructure you code to look something like

exports.scheduledIndexUpdate = functions.pubsub
  .schedule("every 30 minutes")
  .onRun(async context => {
    console.log("This will be run every 30 minutes!");

    var newIndex;
    var getIndex = await admin.collection("billsIndex")
                                .doc("GS2019Index")
                                .get()
                                .then(doc => doc.exists ? doc.data() : null);
    // you have you docs available here 
    for (let prop of getIndex) {
        await admin
          .firestore()
          .collection("billsMetaData")
          .doc(key)
          .get()
          .then(() => { /..,/ })
          // etc
    }

    await admin.firestore().collection("billsIndex")
      .doc("GS2019Index2")
            .set({
              newIndex
            });
    return Promise.resolve(/.../)

That way you are forcing your execution to wait until promise are resolved