How to pass a Promise.all return to another function Cloud Functions (Firebase)

I am trying to set a few variables from Firebase and then pass those into a anotherfunction. Currently, the Promise.all is properly setting foo and bar, however, I can't tell if foo and bar are being passed into then, and also Firebase is not properly scoped.

The Promise.all block is based on a tutorial found here: https://www.youtube.com/watch?v=NgZIb6Uwpjc&t=305s

exports.someFunction = functions.database.ref(`/data`).onWrite(event => {
  const condition = event.data.val()
  if (condition) {
    // Get the data at this location only once, returns a promise, to ensure retrieval of foo and bar
    const foo = event.data.adminRef.child('foo').once('value')
    const bar = event.data.adminRef.child('bar').once('value')

    return Promise.all([foo, bar]).then(results => {
      const foo = results[0].val()
      const bar = results[1].val()
      // Properly sets foo and bar
      // As far as I can tell foo and bar are not passed into 'then'
    }).then([foo, bar] => {
      return someModule.anotherFunction({
        "foo": foo,
        "bar": bar
      }).then(response => {
        // Get error thrown that Firebase is not defined
        let updates = {};
        updates[`/data`] = response;
        console.log(response)
        return event.data.adminRef.parent.child('newInfo').update(updates)
      })
    })
  } else {
    console.log('Fail');
  }
});

How can I pass foo and bar into anotherFunction and set the response of that function to Firebase?

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