All the relevant code is in the App.js file.
The project has been generated as per standard procedure, then expo-av is added with expo install
npx create-expo-app expo-av-nativeeventemitter-bug
npx expo install expo-av
The relevant part of the code is simply:
import { Audio } from "expo-av";
import { useCallback } from "react";
import { Button, StyleSheet, Text, View } from "react-native";
export default function App() {
const playSound = useCallback(async () => {
const sound = await Audio.Sound.createAsync(require("./assets/beep.mp3"));
await sound.sound.playAsync();
}, []);
return (
<View style={styles.container}>
/* omissis */
<Button title="Play Sound" onPress={playSound} />
</View>
);
}
/* omissis */As long the App is loaded, a couple of warings appears:
WARN `new NativeEventEmitter()` was called with a non-null argument without the required `addListener` method.
WARN `new NativeEventEmitter()` was called with a non-null argument without the required `removeListeners` method.
Whenever the Sound is played, another couple of the same warnings is displayed.