We first need to install expo-speech npm package
npx expo install expo-speech
Text to Speech is in react package fairly easy all we need is calling speech object and passing text into the function
import * as Speech from "expo-speech";
Speech.speak("bonjour, l'application fonctionne", {
language: "fr-FR",
Note that we can use other languages such as american english with "en-US" code. You can find source code in my github.