@naturalcycles/js-lib/dist/browser/script.util.js

Standard library for universal (browser + Node.js) javascript

import { isServerSide } from '../env.js';
import { _objectAssign } from '../types.js';
/**
 * opt.async defaults to `true`.
 * No other options are set by default.
 */
export async function loadScript(src, opt) {
    if (isServerSide())
        return;
    return await new Promise((resolve, reject) => {
        const s = _objectAssign(document.createElement('script'), {
            src,
            async: true,
            ...opt,
            onload: resolve,
            onerror: (_event, _source, _lineno, _colno, err) => {
                reject(err || new Error(`loadScript failed: ${src}`));
            },
        });
        document.head.append(s);
    });
}
/**
 * Default options:
 * rel: 'stylesheet'
 *
 * No other options are set by default.
 */
export async function loadCSS(href, opt) {
    if (isServerSide())
        return;
    return await new Promise((resolve, reject) => {
        const link = _objectAssign(document.createElement('link'), {
            href,
            rel: 'stylesheet',
            // type seems to be unnecessary: https://stackoverflow.com/a/5409146/4919972
            // type: 'text/css',
            ...opt,
            onload: resolve,
            onerror: (_event, _source, _lineno, _colno, err) => {
                reject(err || new Error(`loadCSS failed: ${href}`));
            },
        });
        document.head.append(link);
    });
}