code: function parse(size) {
    var matches = size.match(regexp);
  
    if (!matches)
      return null;
  
    var multiplicator = matches[3] ? +matches[3].replace(/x$/, '') : 1;
  
    return {
      width: +matches[1] * multiplicator,
      height: +matches[2] * multiplicator
    };
  }
docs: Parse image size.
  
  @param {string} size Size string
  @returns {object} size Size object
  @returns {number} size.width Width
  @returns {number} size.height Height