diff --git a/locales/index.d.ts b/locales/index.d.ts
new file mode 100644
index 0000000000..4a9672c63f
--- /dev/null
+++ b/locales/index.d.ts
@@ -0,0 +1,5 @@
+type Locale = { [key: string]: string };
+
+declare const locales: { [lang: string]: Locale };
+
+export default locales;
diff --git a/src/server/web/docs.ts b/src/server/web/docs.ts
index f823c308c2..1455abae78 100644
--- a/src/server/web/docs.ts
+++ b/src/server/web/docs.ts
@@ -16,7 +16,7 @@ import config from '../../config';
 import { licenseHtml } from '../../misc/license';
 const constants = require('../../const.json');
 import endpoints from '../api/endpoints';
-const locales = require('../../../locales');
+import locales from '../../../locales';
 import * as nestedProperty from 'nested-property';
 
 function getLang(lang: string): string {