diff --git a/src/web/app/desktop/mixins.js b/src/web/app/desktop/mixins.js
new file mode 100644
index 0000000000..4a14b81763
--- /dev/null
+++ b/src/web/app/desktop/mixins.js
@@ -0,0 +1,42 @@
+const riot = require('riot');
+
+module.exports = me => {
+	if (me) require('./scripts/stream')(me);
+
+	require('./scripts/user-preview');
+	require('./scripts/open-window');
+
+	riot.mixin('notify', {
+		notify: require('./scripts/notify')
+	});
+
+	const dialog = require('./scripts/dialog');
+
+	riot.mixin('dialog', {
+		dialog: dialog
+	});
+
+	riot.mixin('NotImplementedException', {
+		NotImplementedException: () => {
+			return dialog('<i class="fa fa-exclamation-triangle"></i>Not implemented yet', '要求された操作は実装されていません。<br>→<a href="https://github.com/syuilo/misskey" target="_blank">Misskeyの開発に参加する</a>', [{
+				text: 'OK'
+			}]);
+		}
+	});
+
+	riot.mixin('input-dialog', {
+		inputDialog: require('./scripts/input-dialog')
+	});
+
+	riot.mixin('update-avatar', {
+		updateAvatar: require('./scripts/update-avatar')
+	});
+
+	riot.mixin('update-banner', {
+		updateBanner: require('./scripts/update-banner')
+	});
+
+	riot.mixin('autocomplete', {
+		Autocomplete: require('./scripts/autocomplete')
+	});
+};
diff --git a/src/web/app/desktop/mixins.ls b/src/web/app/desktop/mixins.ls
deleted file mode 100644
index cb5680ccec..0000000000
--- a/src/web/app/desktop/mixins.ls
+++ /dev/null
@@ -1,38 +0,0 @@
-riot = require \riot
-
-module.exports = (me) ~>
-	if me?
-		(require './scripts/stream') me
-
-	require './scripts/user-preview'
-
-	require './scripts/open-window'
-
-	riot.mixin \notify do
-		notify: require './scripts/notify'
-
-	dialog = require './scripts/dialog'
-
-	riot.mixin \dialog do
-		dialog: dialog
-
-	riot.mixin \NotImplementedException do
-		NotImplementedException: ~>
-			dialog do
-				'<i class="fa fa-exclamation-triangle"></i>Not implemented yet'
-				'要求された操作は実装されていません。<br>→<a href="https://github.com/syuilo/misskey" target="_blank">Misskeyの開発に参加する</a>'
-				[
-					text: \OK
-				]
-
-	riot.mixin \input-dialog do
-		input-dialog: require './scripts/input-dialog'
-
-	riot.mixin \update-avatar do
-		update-avatar: require './scripts/update-avatar'
-
-	riot.mixin \update-banner do
-		update-banner: require './scripts/update-banner'
-
-	riot.mixin \autocomplete do
-		Autocomplete: require './scripts/autocomplete'
diff --git a/src/web/app/desktop/script.js b/src/web/app/desktop/script.js
index 92a4598305..b240e9ab98 100644
--- a/src/web/app/desktop/script.js
+++ b/src/web/app/desktop/script.js
@@ -6,7 +6,7 @@ require('chart.js');
 require('./tags');
 const riot = require('riot');
 const boot = require('../boot');
-const mixins = require('./mixins.ls');
+const mixins = require('./mixins');
 const route = require('./router');
 const fuckAdBlock = require('./scripts/fuck-ad-block');