feat: resolved type error

backend/src/lib/ms/index.ts

@@ -0,0 +1,15 @@
+import msFn, { StringValue } from "ms";
+
+import { BadRequestError } from "../errors";
+
+export const ms = (val: string) => {
+  if (typeof val !== "string") {
+    throw new BadRequestError({ message: `Date must be string` });
+  }
+
+  try {
+    return msFn(val as StringValue);
+  } catch {
+    throw new BadRequestError({ message: `Invalid date format string: ${val}` });
+  }
+};