why wont this cf worker work

functions/content/images/_middleware.ts

@@ -1,5 +1,5 @@
 import assetNegotiationPlugin from "pages-plugin-asset-negotiation";
 
 export const onRequest: PagesFunction = assetNegotiationPlugin({
-	formats: ['jxl','avif','webp'], // The formats you want to support, in order of preference. This is the default configuration and will serve a jxl image if the browser supports it (and it was found) first, followed by avif and then webp.
+	formats: ['jxl', 'avif', 'webp'], // The formats you want to support, in order of preference. This is the default configuration and will serve a jxl image if the browser supports it (and it was found) first, followed by avif and then webp.
 });