scratch-www/src/init.js

const jar = require('./lib/jar');
const Raven = require('raven-js');

/**
 * -----------------------------------------------------------------------------
 * Error handling
 * -----------------------------------------------------------------------------
 */
(() => {
    if (process.env.SENTRY_DSN !== '') {
        Raven.config(process.env.SENTRY_DSN).install();
    }
})();

/**
 * -----------------------------------------------------------------------------
 * L10N
 * -----------------------------------------------------------------------------
 */
(() => {
    /*
     * Bind locale code from cookie if available. Uses navigator language API as a fallback.
     *
     * @return {string}
     */
    const updateLocale = () => {
        let obj = jar.get('scratchlanguage');
        if (typeof obj === 'undefined') {
            obj = window.navigator.userLanguage || window.navigator.language;
            if (['pt', 'pt-pt', 'PT', 'PT-PT'].indexOf(obj) !== -1) {
                obj = 'pt-br'; // default Portuguese users to Brazilian Portuguese due to our user base. Added in 2.2.5.
            }
        }
        return obj;
    };

    window._locale = updateLocale();
})();