diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..209e2bd
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,55 @@
+import {BrowserWindow} from 'electron';
+
+export interface Options {
+	/**
+	 * Default: [Only in development](https://github.com/sindresorhus/electron-is-dev)
+	 */
+	readonly enabled?: boolean;
+
+	/**
+	 * Show DevTools on each created `BrowserWindow`.
+	 *
+	 * @default true
+	 */
+	readonly showDevTools?: boolean;
+
+	/**
+	 * The dock state to open DevTools in.
+	 *
+	 * @default 'undocked'
+	 */
+	readonly devToolsMode?: 'undocked' | 'right' | 'bottom' | 'previous' | 'detach';
+}
+
+/**
+ * Install keyboard shortcuts and optionally activate DevTools on each created `BrowserWindow`.
+ *
+ * @example
+ *
+ * import {app, BrowserWindow} from 'electron';
+ * import electronDebug from 'electron-debug';
+ *
+ * electronDebug();
+ *
+ * let win;
+ * (async () => {
+ * 	await app.whenReady();
+ * 	win = new BrowserWindow();
+ * });
+ */
+export default function electronDebug(options?: Options): void;
+
+/**
+ * Reload the specified `BrowserWindow` instance or the focused one.
+ */
+export function refresh(window?: BrowserWindow = BrowserWindow.getFocusedWindow()): void;
+
+/**
+ * Toggle DevTools for the specified `BrowserWindow` instance or the focused one.
+ */
+export function devTools(window?: BrowserWindow = BrowserWindow.getFocusedWindow()): void;
+
+/**
+ * Open DevTools for the specified `BrowserWindow` instance or the focused one.
+ */
+export function openDevTools(window?: BrowserWindow = BrowserWindow.getFocusedWindow()): void;
diff --git a/index.js b/index.js
index e1c7b40..1816509 100644
--- a/index.js
+++ b/index.js
@@ -110,6 +110,8 @@ module.exports = opts => {
 	});
 };
 
+module.exports.default = module.exports;
+
 module.exports.refresh = refresh;
 module.exports.devTools = devTools;
 module.exports.openDevTools = openDevTools;
diff --git a/index.test-d.ts b/index.test-d.ts
new file mode 100644
index 0000000..748db19
--- /dev/null
+++ b/index.test-d.ts
@@ -0,0 +1,12 @@
+import {expectType} from 'tsd-check';
+import {BrowserWindow} from 'electron';
+import electronDebug, {refresh, devTools, openDevTools} from '.';
+
+expectType<void>(electronDebug({
+  enabled: true,
+  showDevTools: true
+}));
+
+expectType<void>(refresh(new BrowserWindow()));
+expectType<void>(devTools());
+expectType<void>(openDevTools());
diff --git a/package.json b/package.json
index 9ed0134..a0daa5b 100644
--- a/package.json
+++ b/package.json
@@ -11,10 +11,11 @@
 	},
 	"scripts": {
 		"start": "electron test.js",
-		"test": "xo"
+		"test": "xo && tsd-check"
 	},
 	"files": [
-		"index.js"
+		"index.js",
+		"index.d.ts"
 	],
 	"keywords": [
 		"electron",
@@ -33,6 +34,7 @@
 		"devtron": "^1.1.0",
 		"electron": "^2.0.2",
 		"electron-react-devtools": "^0.5.3",
+		"tsd-check": "^0.3.0",
 		"xo": "*"
 	},
 	"xo": {
diff --git a/readme.md b/readme.md
index 9b2e15b..0934a17 100644
--- a/readme.md
+++ b/readme.md
@@ -90,7 +90,7 @@ Show DevTools on each created `BrowserWindow`.
 
 Type: `string`<br>
 Default: `undocked`<br>
-Values: `undocked` `right` `bottom` `previous`
+Values: `undocked` `right` `bottom` `previous` `detach`
 
 The dock state to open DevTools in.