chore: initialize function default

index.ts

@@ -0,0 +1,17 @@
+/**
+ * Capitalizes the first letter of a string.
+ * @param str The input string.
+ * @returns The string with the first letter capitalized.
+ */
+export function capitalizeFirstLetter(str: string): string {
+    return str.charAt(0).toUpperCase() + str.slice(1);
+}
+
+/**
+ * Reverses a string.
+ * @param str The input string.
+ * @returns The reversed string.
+ */
+export function reverseString(str: string): string {
+    return str.split("").reverse().join("");
+}