Method lang

bin/yarn-standalone.js:35391–35404

(key, ...args)

  }

  lang(key, ...args) {
    const msg = (_index || _load_index())[this.language][key] || (_index || _load_index()).en[key];
    if (!msg) {
      throw new ReferenceError(`No message defined for language key ${key}`);
    }

    // stringify args
    const stringifiedArgs = stringifyLangArgs(args);

    // replace $0 placeholders with args
    return msg.replace(/\$(\d+)/g, (str, i) => {
      return stringifiedArgs[i];
    });
  }

  /**
   * `stringifyLangArgs` run `JSON.stringify` on strings too causing