diff --git a/src/i18n.d.ts b/src/i18n.d.ts
new file mode 100644
index 0000000..e050b53
--- /dev/null
+++ b/src/i18n.d.ts
@@ -0,0 +1,9 @@
+/* eslint-disable no-unused-vars */
+export {}
+
+declare module 'vue' {
+  interface ComponentCustomProperties {
+    $t: (key: string) => string
+    $tm: (key: string) => [] | { [p: string]: any }
+  }
+}