functions.md

RxFire Cloud Functions

Callable Functions Observables

httpsCallable()

The httpsCallable() function returns an observable that calls a callable function, then emits the data returned from that function.

function	httpsCallable()
params	functions: Functions, name: string, options?: HttpsCallableOptions
import path	rxfire/functions
return	(data: T) => Observable<R>

TypeScript Example

import { httpsCallable } from 'rxfire/functions';
import { initializeApp } from 'firebase/app';
import { getFunctions } from 'firebase/functions';

// Set up Firebase
const app = initializeApp({/* config */});
const functions = getFunctions(app);

// Assume an `uppercaser` function is deployed
const capitalizedText$ = httpsCallable<string, string>(functions, 'uppercaser')('hello world');
capitalizedText$.subscribe((text) => {
  console.log(text);
}); // logs "HELLO WORLD"