docs: function prepend(file, text, options) {
    options = _.sanitize(options, {encoding: 'utf-8'});
    const encoding = options.encoding;
    if (!exists(file)) {
      write(file, text, {encoding: encoding});
    } else {
      const currentText = read(file, {encoding: encoding});
      write(file, text + currentText, {encoding: encoding});
    }
  }