angular-firebase-angularfire-functions-onCall-json.ts

// ./src/app/functionstest/functionstest.tl

import { Component, OnInit } from '@angular/core';
import { AngularFireFunctions } from '@angular/fire/functions';

@Component({
  selector: 'app-functiontest',
  template:'<p style="border:1px red solid;margin-top:50px">{{ out }}x</p>'
})
export class FunctiontestComponent implements OnInit {
  constructor(private func: AngularFireFunctions) {}
  out:string ='';
  ngOnInit() {
    this.func.httpsCallable('helloWorld')({ text: 'Some Argument' })
      .toPromise()
      .then(resp => {
        console.log( resp );
        this.out = JSON.stringify(resp);
      })
      .catch(err => {
        console.error({ err });
      });
  }
}



// ./functions/src/index.ts

import * as functions from 'firebase-functions';

export const helloWorld = functions.https.onCall((data, context) => {
  return { message: "Hello from Firebase!" };
});