{
  "version": 3,
  "sources": ["../../../Vettvangur.Frontend/src/scripts/shared/utility/prefetch.ts"],
  "sourcesContent": ["const prefetch = {\r\n  init() {\r\n    // Event delegation used as there may be hundreds of same-site links on a page:\r\n    document.body.addEventListener('mouseover', this.worker)\r\n  },\r\n  worker(event) {\r\n    const target = event.target\r\n\r\n    // Not a link? - if so exit\r\n    if (target.tagName !== 'A') {\r\n      return\r\n    }\r\n\r\n    // Read the attribute rather than the property!\r\n    // - because the property is the full https:// address\r\n    const href = target.getAttribute('href')\r\n\r\n    // No href, or not a same-site link? - if so exit\r\n    // - link attribute must start with a backslash\r\n    if (!href || href.charAt(0) !== '/') {\r\n      return\r\n    }\r\n\r\n    // Already prefetched? - if so exit\r\n    const isAlreadyAdded = document.head.querySelector(`link[href=\"${href}\"]`)\r\n    if (isAlreadyAdded) {\r\n      return\r\n    }\r\n\r\n    // Is the same page? - if so exit\r\n    const isSamePage = target.pathname === window.location.pathname\r\n    if (isSamePage) {\r\n      return\r\n    }\r\n\r\n    // Add prefetch link to head section\r\n    const link = document.createElement('link')\r\n    link.rel = 'prefetch'\r\n    link.href = href\r\n    document.head.appendChild(link)\r\n  },\r\n}\r\n\r\nexport default prefetch\r\n"],
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  "names": ["prefetch", "event", "target", "href", "link", "prefetch_default"]
}