mirror of https://github.com/web3privacy/w3ps1.git
48 lines
1.4 KiB
JavaScript
48 lines
1.4 KiB
JavaScript
const scriptRel = "modulepreload";
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const assetsURL = function(dep, importerUrl) {
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return new URL(dep, importerUrl).href;
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};
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const seen = {};
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const __vitePreload = function preload(baseModule, deps, importerUrl) {
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if (!deps || deps.length === 0) {
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return baseModule();
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}
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const links = document.getElementsByTagName("link");
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return Promise.all(deps.map((dep) => {
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dep = assetsURL(dep, importerUrl);
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if (dep in seen)
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return;
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seen[dep] = true;
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const isCss = dep.endsWith(".css");
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const cssSelector = isCss ? '[rel="stylesheet"]' : "";
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const isBaseRelative = !!importerUrl;
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if (isBaseRelative) {
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for (let i = links.length - 1; i >= 0; i--) {
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const link2 = links[i];
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if (link2.href === dep && (!isCss || link2.rel === "stylesheet")) {
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return;
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}
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}
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} else if (document.querySelector(`link[href="${dep}"]${cssSelector}`)) {
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return;
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}
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const link = document.createElement("link");
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link.rel = isCss ? "stylesheet" : scriptRel;
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if (!isCss) {
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link.as = "script";
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link.crossOrigin = "";
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}
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link.href = dep;
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document.head.appendChild(link);
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if (isCss) {
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return new Promise((res, rej) => {
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link.addEventListener("load", res);
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link.addEventListener("error", () => rej(new Error(`Unable to preload CSS for ${dep}`)));
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});
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}
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})).then(() => baseModule());
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};
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export {
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__vitePreload as _
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};
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