Restructure codebase to use src directory

src/hooks/useTimeDistance.ts

@@ -0,0 +1,20 @@
+import formatDistanceStrict from 'date-fns/formatDistanceStrict';
+import { useState, useEffect } from 'react';
+
+/**
+ * Returns the time distance between the provided date and the current time, using the
+ * `date-fns` `formatDistanceStrict` function. This hook ensures that the same result is
+ * calculated on both the server and client, preventing hydration errors.
+ *
+ * @param createdAt The date to calculate the time distance from.
+ * @returns The time distance between the provided date and the current time.
+ */
+const useTimeDistance = (createdAt: Date) => {
+  const [timeDistance, setTimeDistance] = useState('');
+  useEffect(() => {
+    setTimeDistance(formatDistanceStrict(createdAt, new Date()));
+  }, [createdAt]);
+  return timeDistance;
+};
+
+export default useTimeDistance;