rowy/cloud_functions/functions/fetchConfig.ts

import * as fs from "fs";
// Initialize Firebase Admin
import * as admin from "firebase-admin";
// Initialize Firebase Admin

const serviceAccount = require(`./firebase-credentials.json`);
console.log(`Running on ${serviceAccount.project_id}`);
admin.initializeApp({
  credential: admin.credential.cert(serviceAccount),
  databaseURL: `https://${serviceAccount.project_id}.firebaseio.com`,
});
const db = admin.firestore();

const docConfig2json = async (docPath: string, jsonPath: string) => {
  const doc = await db.doc(docPath).get();
  const data = doc.data();
  const jsonData = JSON.stringify(data ? data.config : "");
  fs.writeFileSync(jsonPath, jsonData);
};

// Initialize Cloud Firestore Database

const main = async () => {
  await docConfig2json(
    "_FIRETABLE_/_SETTINGS_/_CONFIG_/_HISTORY_",
    "./src/history/config.json"
  );
  await docConfig2json(
    "_FIRETABLE_/_SETTINGS_/_CONFIG_/_ALGOLIA_",
    "./src/algolia/config.json"
  );
  await docConfig2json(
    "_FIRETABLE_/_SETTINGS_/_CONFIG_/_COLLECTION_SYNC_",
    "./src/collectionSync/config.json"
  );
  return true;
};

main()
  .catch(err => console.log(err))
  .then(() => console.log("this will succeed"))
  .catch(() => "obligatory catch");