fix(builders): skip articles without URLs when importing into sitemap builders

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartsitemap',
-  version: '4.0.1',
+  version: '4.0.2',
   description: 'A comprehensive TypeScript sitemap library with builder API, supporting standard, news, image, video, and hreflang sitemaps with auto-splitting, streaming, validation, and RSS feed integration.'
 }

ts/smartsitemap.classes.newsbuilder.ts

@@ -76,6 +76,9 @@ export class NewsSitemapBuilder extends UrlsetBuilder {
    */
   importFromArticles(articles: plugins.tsclass.content.IArticle[]): this {
     for (const article of articles) {
+      if (!article.url) {
+        continue;
+      }
       this.add({
         loc: article.url,
         lastmod: article.timestamp ? new Date(article.timestamp) : undefined,

ts/smartsitemap.classes.urlsetbuilder.ts

@@ -149,6 +149,9 @@ export class UrlsetBuilder {
   /** Import from @tsclass/tsclass IArticle array */
   importFromArticles(articles: plugins.tsclass.content.IArticle[]): this {
     for (const article of articles) {
+      if (!article.url) {
+        continue;
+      }
       const url: interfaces.ISitemapUrl = {
         loc: article.url,
         lastmod: article.timestamp ? new Date(article.timestamp) : undefined,