2 lines
880 B
JavaScript
2 lines
880 B
JavaScript
const h=function(){const t=document.createElement("link").relList;return t&&t.supports&&t.supports("modulepreload")?"modulepreload":"preload"}(),m=function(o,t){return new URL(o,t).href},u={},k=function(t,i,c){if(!i||i.length===0)return t();const a=document.getElementsByTagName("link");return Promise.all(i.map(e=>{if(e=m(e,c),e in u)return;u[e]=!0;const r=e.endsWith(".css"),f=r?'[rel="stylesheet"]':"";if(!!c)for(let s=a.length-1;s>=0;s--){const l=a[s];if(l.href===e&&(!r||l.rel==="stylesheet"))return}else if(document.querySelector(`link[href="${e}"]${f}`))return;const n=document.createElement("link");if(n.rel=r?"stylesheet":h,r||(n.as="script",n.crossOrigin=""),n.href=e,document.head.appendChild(n),r)return new Promise((s,l)=>{n.addEventListener("load",s),n.addEventListener("error",()=>l(new Error(`Unable to preload CSS for ${e}`)))})})).then(()=>t())};export{k as _};
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