Powering Statistics with Firebase Data

As I think of it, the better solution would be to modify your initial code with something like this:

{{ getUsers.data.filter(user => {
  let currentDate = new Date();
  let oneDayAgo = currentDate - 24 * 60 * 60 * 1000; 
  return user.joinDate > oneDayAgo
}).length}}

This code should be placed in the Value field of your Statistics component.

Click to see screenshot

This way is more efficient because there is no need in triggering getUsers query just for the sake of calculation.