How to custom font family?

[Aircity]

App.tsx

export default function App() {
  const isLoadingComplete = useCachedResources();

  if (!isLoadingComplete) {
    return null;
  } else {
    return <GLViewScreen />;
  }
}

useCachedResources

import { Ionicons } from '@expo/vector-icons';
import * as Font from 'expo-font';
import * as SplashScreen from 'expo-splash-screen';
import * as React from 'react';

export default function useCachedResources() {
  const [isLoadingComplete, setLoadingComplete] = React.useState(false);

  // Load any resources or data that we need prior to rendering the app
  React.useEffect(() => {
    async function loadResourcesAndDataAsync() {
      try {
        SplashScreen.preventAutoHideAsync();

        // Load fonts
        await Font.loadAsync({
          ...Ionicons.font,
          'space-mono': require('../assets/fonts/SpaceMono-Regular.ttf'),
        });
      } catch (e) {
        // We might want to provide this error information to an error reporting service
        console.warn(e);
      } finally {
        setLoadingComplete(true);
        SplashScreen.hideAsync();
      }
    }

    loadResourcesAndDataAsync();
  }, []);

  return isLoadingComplete;
}

GLViewScreen

      <GLView
          style={{ flexGrow: 1, flexShrink: 0, flexBasis: "auto" }}
          onContextCreate={async (context) => {
          const ctx = new Expo2DContext(context);
          const asset: any = Asset.fromModule(require("./assets/main.png"));
          await asset.downloadAsync();
          asset.width = 656;
          asset.height = 508;
          ctx.drawImage(asset, 0, 0, 656, 508);
          await ctx.initializeText();
          ctx.fillStyle = "blue";
          ctx.font = "72pt space-mono";
          ctx.fillText("Useless Text", 240, 180);
          ctx.flush();
        }}
      />

Throw error and display message

[Unhandled promise rejection: SyntaxError: Could not find supported font family]