Each then() should return a value or throw Firebase cloud functions

Question

I am writing a cloud function for firebase using javascript but I am stuck, I don\'t know the exact meaning of error and unable to solve it.. The error states: 27:65 error

Answer 1

That's jslinting telling you that each .then must include a return value. In other words, avoid promise anti pattern.

You might find async functions easier to wrap your head around. Note that you'll need to run the Node 8 runtime for async support though...