Method push

Extensions/Firebase/A_firebasejs/firebase.d.ts:6930–6930

* Generates a new child location using a unique key and returns its * `Reference`. * * This is the most common pattern for adding data to a collection of items. * * If you provide a value to `push()`, the value is written to the * generated location. If you don't pass a

(
      value?: any,
      onComplete?: (a: Error | null) => any
    )

     *   used immediately as the `Reference` to the child location.
     */
    push(
      value?: any,
      onComplete?: (a: Error | null) => any
    ): firebase.database.ThenableReference;