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export const loadScript = function (script_name) {
return new Promise(function (resolve, reject) {
let script = document.createElement('script');
script.src = `${STUDIP.ASSETS_URL}${script_name}`;
script.onload = resolve;
script.onerror = reject;
document.head.appendChild(script);
});
};
let mathjax_promise = null;
/** This function dynamically loads JS features organized in chunks.
*
* @param {string} chunk The name of the chunk to load.
* @param {{ silent: boolean }} options Options for loading the chunk.
* Pass `{ silent: true }` to supress
* error messages.
* @return {Promise}
*/
export const loadChunk = function (chunk, { silent = false } = {}) {
let promise = null;
switch (chunk) {
case 'courseware':
promise = Promise.all([
STUDIP.loadChunk('vue'),
import(
/* webpackChunkName: "courseware" */
'./chunks/courseware'
),
]).then(([Vue]) => Vue);
break;
case 'code-highlight':
promise = import(
/* webpackChunkName: "code-highlight" */
'./chunks/code-highlight'
).then(({default: hljs}) => {
return hljs;
});
break;
case 'chartist':
promise = import(
/* webpackChunkName: "chartist" */
'./chunks/chartist'
).then(({ default: Chartist }) => Chartist);
break;
case 'fullcalendar':
promise = import(
/* webpackChunkName: "fullcalendar" */
'./chunks/fullcalendar'
);
break;
case 'tablesorter':
promise = import(
/* webpackChunkName: "tablesorter" */
'./chunks/tablesorter'
);
break;
case 'mathjax':
if (mathjax_promise === null) {
mathjax_promise = STUDIP.loadScript('javascripts/mathjax/MathJax.js?config=TeX-AMS_HTML,default')
.then(() => {
(function (origPrint) {
window.print = function () {
window.MathJax.Hub.Queue(['Delay', window.MathJax.Callback, 700], origPrint);
};
})(window.print);
return window.MathJax;
})
.catch(() => {
throw new Error('Could not load mathjax');
});
}
promise = mathjax_promise;
break;
case 'vue':
promise = import(
/* webpackChunkName: "vue.js" */
'./chunks/vue'
);
break;
case 'wysiwyg':
promise = import(
/* webpackChunkName: "wysiwyg.js" */
'./chunks/wysiwyg'
);
break;
default:
promise = Promise.reject(new Error(`Unknown chunk: ${chunk}`));
}
return promise.catch((error) => {
if (!silent) {
console.error(`Could not load chunk ${chunk}`, error);
}
throw error;
});
};
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