The value of 'useFonts' cannot be changed as it is a read-only property in expo-fonts

Struggling with 'useFonts' being read-only and unable to assign

In my Expo project using React Native (TypeScript), I encounter the issue of trying to import a .ttf font file.

My attempt was to create a custom hook called "useFont" to pre-load all fonts before launching the application. More details can be found here.

Initially, this was my approach:

import * as Font from "expo-font";

export default useFonts = async () =>
    await Font.loadAsync({
        'LeagueSpartan': require('../assets/fonts/LeagueSpartan.ttf'),
    });

However, the error Cannot find name 'useFonts' kept coming up.

So, I made another attempt like so:

import * as Font from "expo-font";

export default Font.useFonts = async () =>
    await Font.loadAsync({
        'LeagueSpartan': require('../assets/fonts/LeagueSpartan.ttf'),
    });

But now, I am faced with

Cannot assign to 'useFonts' because it is a read-only property
.

It seems like neither option is working for me. Any guidance would be greatly appreciated!

Answer №1

The issue arises from your current export method utilizing default

A suggested alternative is:

import * as Font from "expo-font";

export const useFonts = async () =>
  await Font.loadAsync({
    'LeagueSpartan': require('../assets/fonts/LeagueSpartan.ttf'),
  });

To utilize this, import it using the following code snippet

import { useFonts } from './path-to-your-file';

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