Merge pull request #5 from kingston/kingston/fix-prettier-formatting

fix: Add check to make sure we don't attempt to format invalid files

Author: kingston

.changeset/fix-prettier-formatter-extensions.md

@@ -0,0 +1,5 @@
+---
+'workspace-meta': patch
+---
+
+Fix prettier formatter to only format files that Prettier can parse. The formatter now uses Prettier's `getFileInfo` API to check if a file has an inferred parser before attempting to format it, preventing errors on unsupported file types.

CLAUDE.md

@@ -130,3 +130,15 @@ pnpm prettier:write
 # Build package
 pnpm build
 ```
+
+## Changesets
+
+If you are adding a new feature or changing an existing feature, please also add a new Changeset for it in the `.changeset/` directory of the form (keeping things to patch changes for now):
+
+```markdown
+---
+'package-name': patch
+---
+
+Description of the feature or change
+```

src/helpers/prettier-formatter.ts

@@ -26,6 +26,13 @@ export async function prettierFormatter(
       throw new Error('Prettier is not available');
     }
 
+    // Check if Prettier can parse this file
+    const fileInfo = await prettier.getFileInfo(filename);
+    if (!fileInfo.inferredParser) {
+      // Prettier doesn't know how to format this file type
+      return content;
+    }
+
     // Resolve prettier config for the file
     const options = await prettier.resolveConfig(filename);