diff --git a/src/constants/index.d.ts b/src/constants/index.d.ts
new file mode 100644
index 0000000..8600153
--- /dev/null
+++ b/src/constants/index.d.ts
@@ -0,0 +1,5 @@
+export const START_NOTIFICATION_SERVICE: string;
+export const NOTIFICATION_SERVICE_STARTED: string;
+export const NOTIFICATION_SERVICE_ERROR: string;
+export const NOTIFICATION_RECEIVED: string;
+export const TOKEN_UPDATED: string;