diff --git a/src/constants/timeFormat/index.d.ts b/src/constants/timeFormat/index.d.ts
new file mode 100644
index 00000000..a7080438
--- /dev/null
+++ b/src/constants/timeFormat/index.d.ts
@@ -0,0 +1,13 @@
+export type TimeFormatType = {
+  name: string,
+  value: number
+}
+
+export type TimeFormatList = {
+  Absolute: TimeFormatType,
+  Relative: TimeFormatType
+}
+
+declare var t: TimeFormatList
+
+export default t
diff --git a/src/constants/timeFormat.js b/src/constants/timeFormat/index.js
similarity index 100%
rename from src/constants/timeFormat.js
rename to src/constants/timeFormat/index.js