Docs update

src/types.ts

@@ -0,0 +1,20 @@
+/**
+ * Return keys on a type as an array of strings
+ *
+ * @example
+ * ```ts
+ * type Person = {
+ * 	  firstName: string;
+ * 	  lastName: string;
+ * 	  age: number;
+ * }
+ *
+ * const keys = typeKeys<Person>();
+ * console.log(keys); // Output: ["firstName", "lastName", "age"]
+ * ```
+ *
+ * @return {Array<keyof T>} Available keys
+ */
+export function tyoeKeys<T extends object>() {
+	return Object.keys(<T>{}) as Array<keyof T>;
+}