Argument of type '(snap: DataSnapshot) => void' is not assignable to parameter of type '(a: DataSnapshot) => boolean'

Question

I\'ve already read several questions and answers about this problem but wasn\'t able to solve it.

I\'m using Ionic2 and I have a method which retrieves data from Fir

Answer 1

For Typescript version I came out with this solution:

db
  .ref(`jobs`)
  .orderByChild("counter")
  .on("value", (querySnapshot) => {
    const jobs: any[] = [];
    querySnapshot.forEach((jobRef) => {
      jobs.push(jobRef.val());
    });
    jobs.forEach(async (job) => {
      await minuteRT(job);
    });
    res.status(200).send("done!");
  });