diff --git a/website/src/playground/Playground.tsx b/website/src/playground/Playground.tsx
index ba30827228b..d8f7a9a21c1 100644
--- a/website/src/playground/Playground.tsx
+++ b/website/src/playground/Playground.tsx
@@ -1,6 +1,4 @@
-import {
-	emptyPrettierOutput,
-	emptyRomeOutput,
+import type {
 	PlaygroundProps,
 	RomeAstSyntacticData,
 } from "./types";
diff --git a/website/src/playground/tabs/SettingsTab.tsx b/website/src/playground/tabs/SettingsTab.tsx
index acba54cef98..9bdec3e5d2f 100644
--- a/website/src/playground/tabs/SettingsTab.tsx
+++ b/website/src/playground/tabs/SettingsTab.tsx
@@ -1,6 +1,5 @@
 import {
 	IndentStyle,
-	PlaygroundSettings,
 	PlaygroundState,
 	QuoteProperties,
 	QuoteStyle,
diff --git a/website/src/playground/workers/prettierWorker.ts b/website/src/playground/workers/prettierWorker.ts
index 7b5facfc83f..a74eaeb7608 100644
--- a/website/src/playground/workers/prettierWorker.ts
+++ b/website/src/playground/workers/prettierWorker.ts
@@ -1,4 +1,4 @@
-import { formatWithPrettier } from "../utils";
+import { formatWithPrettier, isTypeScriptFilename } from "../utils";
 import { defaultPlaygroundState, PlaygroundSettings } from "../types";
 
 let settings = defaultPlaygroundState.settings;
@@ -17,7 +17,6 @@ self.addEventListener("message", (e) => {
 				indentWidth,
 				quoteStyle,
 				quoteProperties,
-				typescript: isTypeScript,
 				trailingComma,
 			} = settings;
 			const code = e.data.code as string;
@@ -27,7 +26,7 @@ self.addEventListener("message", (e) => {
 				lineWidth,
 				indentStyle,
 				indentWidth,
-				language: isTypeScript ? "ts" : "js",
+				language: isTypeScriptFilename(filename) ? "ts" : "js",
 				quoteStyle,
 				quoteProperties,
 				trailingComma,
diff --git a/website/src/playground/workers/romeWorker.ts b/website/src/playground/workers/romeWorker.ts
index ba44405607a..6b095c37293 100644
--- a/website/src/playground/workers/romeWorker.ts
+++ b/website/src/playground/workers/romeWorker.ts
@@ -9,11 +9,9 @@ import {
 	IndentStyle,
 	LoadingState,
 	PlaygroundSettings,
-	PlaygroundState,
 	QuoteProperties,
 	QuoteStyle,
 	RomeOutput,
-	SourceType,
 } from "../types";
 
 let workspace: Workspace | null = null;
@@ -30,7 +28,7 @@ const files: Map<string, File> = new Map();
 
 let configuration: undefined | Configuration;
 
-function getPathForFile(file: File) {
+function getPathForFile(file: File): RomePath {
 	return {
 		path: file.filename,
 		id: file.id,