[tools] Fix transforming binary files [skip ci]

expo · Sep 13, 2022 · f394898 · f394898
1 parent 7c2c37d
commit f394898
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/tools/src/Transforms.ts b/tools/src/Transforms.ts
@@ -125,8 +125,14 @@ export async function copyFileWithTransformsAsync(
   // Transform source content.
   const content = await getTransformedFileContentAsync(sourcePath, filteredContentTransforms);
 
-  // Save transformed source file at renamed target path.
-  await fs.outputFile(targetPath, content);
+  if (filteredContentTransforms.length > 0) {
+    // Save transformed source file at renamed target path.
+    await fs.outputFile(targetPath, content);
+  } else {
+    // When there are no transforms, it's safer to just copy the file.
+    // Only then binary files will be copied properly since the `content` is utf8-encoded.
+    await fs.copy(sourcePath, targetPath, { overwrite: true });
+  }
 
   // Keep original file mode if needed.
   if (options.keepFileMode) {