diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000..e5f7013
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,2 @@
+node_modules/**/*
+out/**/*
\ No newline at end of file
diff --git a/.prettierrc b/.prettierrc
new file mode 100644
index 0000000..196d453
--- /dev/null
+++ b/.prettierrc
@@ -0,0 +1,7 @@
+{
+  "trailingComma": "es5",
+  "semi": true,
+  "singleQuote": false,
+  "endOfLine": "lf",
+  "arrowParens": "always"
+}
diff --git a/package-lock.json b/package-lock.json
index c82e5b6..e4897c6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -20,6 +20,7 @@
         "eslint": "^7.15.0",
         "glob": "^7.1.6",
         "mocha": "^10.1.0",
+        "prettier": "^3.0.1",
         "ts-loader": "^8.0.13",
         "typescript": "^4.1.2",
         "vsce": "^2.15.0",
@@ -3388,6 +3389,21 @@
         "node": ">= 0.8.0"
       }
     },
+    "node_modules/prettier": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.0.1.tgz",
+      "integrity": "sha512-fcOWSnnpCrovBsmFZIGIy9UqK2FaI7Hqax+DIO0A9UxeVoY4iweyaFjS5TavZN97Hfehph0nhsZnjlVKzEQSrQ==",
+      "dev": true,
+      "bin": {
+        "prettier": "bin/prettier.cjs"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    },
     "node_modules/process-nextick-args": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
diff --git a/package.json b/package.json
index e377f15..a91b20b 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,8 @@
     "compile": "webpack --mode development",
     "compile-watch": "webpack --mode development --watch",
     "test-compile": "tsc -p ./",
-    "vscode:package": "vsce package"
+    "vscode:package": "vsce package",
+    "format": "prettier ./**/*.ts --write --cache"
   },
   "devDependencies": {
     "@types/glob": "^7.1.3",
@@ -80,6 +81,7 @@
     "eslint": "^7.15.0",
     "glob": "^7.1.6",
     "mocha": "^10.1.0",
+    "prettier": "^3.0.1",
     "ts-loader": "^8.0.13",
     "typescript": "^4.1.2",
     "vsce": "^2.15.0",
diff --git a/src/extension.ts b/src/extension.ts
index d274071..5ac506b 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -21,24 +21,27 @@ export function activate(context: vscode.ExtensionContext) {
     onEnterRules,
   });
 
-  const restartCommand = vscode.commands.registerCommand(GleamCommands.RestartServer, async () => {
-    if (!client) {
-      vscode.window.showErrorMessage("gleam client not found");
-      return;
-    }
+  const restartCommand = vscode.commands.registerCommand(
+    GleamCommands.RestartServer,
+    async () => {
+      if (!client) {
+        vscode.window.showErrorMessage("gleam client not found");
+        return;
+      }
 
-    try {
-      if (client.isRunning()) {
-        await client.restart();
+      try {
+        if (client.isRunning()) {
+          await client.restart();
 
-        vscode.window.showInformationMessage("gleam server restarted.");
-      } else {
-        await client.start();
+          vscode.window.showInformationMessage("gleam server restarted.");
+        } else {
+          await client.start();
+        }
+      } catch (err) {
+        client.error("Restarting client failed", err, "force");
       }
-    } catch (err) {
-      client.error("Restarting client failed", err, "force");
     }
-  });
+  );
 
   context.subscriptions.push(restartCommand);