code: function(str){
      if(typeof str !== 'string') return null
      return str.replace(/,(\([0-9.]+,[0-9.]+\))/g, '|$1')
      .split('|')
      .map(module.exports.convertPoint)
    }
docs: convert '(1,2),(4,5)' to [{x:1, y:2},{x: 4, y: 5}]