[font] throw when loading empty font file

Author: vonovak

packages/expo-asset/CHANGELOG.md

@@ -14,6 +14,8 @@
 
 ### 💡 Others
 
+- [android] throw when loading empty font file ([#38229](https://github.com/expo/expo/pull/38229) by [@vonovak](https://github.com/vonovak))
+
 ## 11.1.7 - 2025-07-03
 
 _This version does not introduce any user-facing changes._

packages/expo-font/android/src/main/java/expo/modules/font/FontLoaderModule.kt

@@ -44,6 +44,12 @@ open class FontLoaderModule : Module() {
         val file = Uri.parse(localUri).path?.let { File(it) }
           ?: throw FileNotFoundException(localUri)
 
+        if (file.length() == 0L) {
+          throw CodedException(
+            "Font file for $fontFamilyName is empty. Make sure the local file path is correctly populated."
+          )
+        }
+
         Typeface.createFromFile(file)
       }