Unable to use firebase.firestore.FieldValue.increment

问题

There is a method provided by firestore to increment a numeric value.

But I was not able to use the function because it is undefined.

I tried updating firebase in npm, tried reinstalling firebase. I currently have the 5.10.1 version of firebase.

import firebase from "../base";
...
someHandler = () => {
  someRef.update({
      count: firebase.firestore.FieldValue.increment(1)
  });
}

回答1:

The problem is that the FieldValue is not accessible through the app instance.

So I solved my problem by importing directly from "firebase" instead of my local file which exports an initialized firebase instance.

来源：https://stackoverflow.com/questions/55897154/unable-to-use-firebase-firestore-fieldvalue-increment