RocketChat/Rocket.Chat

import { Meteor } from 'meteor/meteor';
import { WebAppInternals } from 'meteor/webapp';

import { settings } from '../../../settings/server';

function testWebAppInternals(fn) {
    typeof WebAppInternals !== 'undefined' && fn(WebAppInternals);
}
settings.change('CDN_PREFIX', (value) => {
    const useForAll = settings.get('CDN_PREFIX_ALL');
    if (value && typeof value.valueOf() === 'string' && value.trim() && useForAll) {
        return testWebAppInternals((WebAppInternals) => WebAppInternals.setBundledJsCssPrefix(value));
    }
});

settings.change('CDN_JSCSS_PREFIX', (value) => {
    const useForAll = settings.get('CDN_PREFIX_ALL');
    if (value && typeof value.valueOf() === 'string' && value.trim() && !useForAll) {
        return testWebAppInternals((WebAppInternals) => WebAppInternals.setBundledJsCssPrefix(value));
    }
});

Meteor.startup(() => {
    const cdnValue = settings.get('CDN_PREFIX');
    const useForAll = settings.get('CDN_PREFIX_ALL');
    const cdnJsCss = settings.get('CDN_JSCSS_PREFIX');
    if (cdnValue && typeof cdnValue.valueOf() === 'string' && cdnValue.trim()) {
        if (useForAll) {
            return testWebAppInternals((WebAppInternals) => WebAppInternals.setBundledJsCssPrefix(cdnValue));
        }
        if (cdnJsCss && typeof cdnJsCss.valueOf() === 'string' && cdnJsCss.trim()) {
            return testWebAppInternals((WebAppInternals) => WebAppInternals.setBundledJsCssPrefix(cdnJsCss));
        }
    }
});