expo-font

import {useFonts} from '@amazon-devices/expo-font';
import React from 'react';
import {StyleSheet, Text, View} from 'react-native';

export const App = () => {
  const [fontsLoaded] = useFonts({
    'Inter-Black': require('./assets/fonts/Inter-Black.otf'),
  });

  if (!fontsLoaded) {
    return null;
  }

  return (
    <View style={styles.container}>
      <Text style={[styles.text, {fontFamily: 'Inter-Black'}]}>
        Inter Black
      </Text>
      <Text style={styles.text}>Platform Default</Text>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 20,
    backgroundColor: 'white',
  },
  text: {
    fontSize: 30,
    color: 'black',
  },
});