{"id":5639,"date":"2022-08-29T20:42:38","date_gmt":"2022-08-29T15:12:38","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-error-in-typescript-function-function-lacks-ending-return-statement-and-return-type-does-not-include-undefined-closed\/"},"modified":"2022-08-29T20:42:38","modified_gmt":"2022-08-29T15:12:38","slug":"solved-error-in-typescript-function-function-lacks-ending-return-statement-and-return-type-does-not-include-undefined-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-error-in-typescript-function-function-lacks-ending-return-statement-and-return-type-does-not-include-undefined-closed\/","title":{"rendered":"[Solved] Error in typescript function- Function lacks ending return statement and return type does not include &#8216;undefined&#8217; [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-69241440\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"69241440\" data-parentid=\"69240338\" data-score=\"0\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>It seems that the Typescript&#8217;s compiler does not understand that if the length of the array is different from zero, it will surely enter the loan and return a value.<\/p>\n<p>So, the simple soultion is this:<\/p>\n<pre class=\"lang-js prettyprint-override\"><code>  private createBreadcrumbs(route: ActivatedRoute, url: string = '#', breadcrumbs: MenuItem[] = []): MenuItem[] {\n    const children: ActivatedRoute[] = route.children;\n\n    for (const child of children) {\n      const routeURL: string = child.snapshot.url.map(segment =&gt; segment.path).join(\"https:\/\/stackoverflow.com\/\");\n      if (routeURL !== '') {\n        url += `\/${routeURL}`;\n      }\n\n      const label = child.snapshot.data[BreadcrumbComponent.ROUTE_DATA_BREADCRUMB];\n      if (label !== null || label !== undefined) {\n        breadcrumbs.push({label, url});\n      }\n\n      return this.createBreadcrumbs(child, url, breadcrumbs);\n    }\n\n    \/\/ if (children.length === 0)\n    return breadcrumbs;\n  }\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">0<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Error in typescript function- Function lacks ending return statement and return type does not include &#8216;undefined&#8217; [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] It seems that the Typescript&#8217;s compiler does not understand that if the length of the array is different from zero, it will surely enter the loan and return a value. So, the simple soultion is this: private createBreadcrumbs(route: ActivatedRoute, url: string = &#8216;#&#8217;, breadcrumbs: MenuItem[] = []): MenuItem[] { const children: ActivatedRoute[] = route.children; &#8230; <a title=\"[Solved] Error in typescript function- Function lacks ending return statement and return type does not include &#8216;undefined&#8217; [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-error-in-typescript-function-function-lacks-ending-return-statement-and-return-type-does-not-include-undefined-closed\/\" aria-label=\"More on [Solved] Error in typescript function- Function lacks ending return statement and return type does not include &#8216;undefined&#8217; [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[732,651],"class_list":["post-5639","post","type-post","status-publish","format-standard","hentry","category-solved","tag-angular","tag-typescript"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Error in typescript function- Function lacks ending return statement and return type does not include &#039;undefined&#039; [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-error-in-typescript-function-function-lacks-ending-return-statement-and-return-type-does-not-include-undefined-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Error in typescript function- Function lacks ending return statement and return type does not include &#039;undefined&#039; [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] It seems that the Typescript&#8217;s compiler does not understand that if the length of the array is different from zero, it will surely enter the loan and return a value. So, the simple soultion is this: private createBreadcrumbs(route: ActivatedRoute, url: string = &#039;#&#039;, breadcrumbs: MenuItem[] = []): MenuItem[] { const children: ActivatedRoute[] = route.children; ... 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