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import { crossOrigin } from "../settings.js";
/**
* parse/preload a Javascript files
* @param {loader.Asset} data - asset data
* @param {Function} [onload] - function to be called when the asset is loaded
* @param {Function} [onerror] - function to be called in case of error
* @returns {number} the amount of corresponding resource parsed/preloaded
* @ignore
*/
export function preloadJavascript(data, onload, onerror) {
let script = globalThis.document.createElement("script");
script.src = data.src;
script.type = "text/javascript";
if (typeof (crossOrigin) === "string") {
script.crossOrigin = crossOrigin;
}
script.defer = true;
if (typeof onload === "function") {
script.onload = () => {
// callback
onload();
};
}
if (typeof onerror === "function") {
script.onerror = () => {
// callback
onerror(data.name);
};
}
globalThis.document.getElementsByTagName("body")[0].appendChild(script);
return 1;
}