docs: add example to url.ts (#1112)

* docs: add example to url.ts

* test: reomve leftover

src/utils/url.ts

@@ -16,6 +16,14 @@ const nonLocalhostDomainRE = /^[^\s.]+\.\S{2,}$/;
 
 /**
  * Loosely validate a URL `string`.
+ *
+ * @param {string} s - The URL to check for
+ * @return {boolean} `true` if url is valid, `false` otherwise
+ * @example
+ * ```typescript
+ * const s = "https://starknetjs.com/docs";
+ * const result = isUrl(s);
+ * // result == true
  */
 export function isUrl(s?: string): boolean {
   if (!s) {
@@ -53,6 +61,14 @@ export function isUrl(s?: string): boolean {
  * @param {string} defaultPath - The default path to use if no URL or path is provided.
  * @param {string} [urlOrPath] - The optional URL or path to append to the base URL.
  * @return {string} The built URL.
+ * @example
+ * ```typescript
+ * const baseUrl = "https://starknetjs.com";
+ * const defaultPath = "/";
+ * const urlOrPath = "/docs";
+ * const result = buildUrl(baseUrl, defaultPath, urlOrPath);
+ * 
+ * result = "https://starknetjs.com/docs"
  */
 export function buildUrl(baseUrl: string, defaultPath: string, urlOrPath?: string) {
   return isUrl(urlOrPath) ? urlOrPath! : urljoin(baseUrl, urlOrPath ?? defaultPath);