import { fabric } from 'fabric' ; const Line = fabric . util . createClass ( fabric . Line , { type : 'line' , superType : 'drawing' , initialize ( points , options ) { if ( ! points ) { const { x1 , x2 , y1 , y2 } = options ; points = [ x1 , y1 , x2 , y2 ] ; } options = options || { } ; this . callSuper ( 'initialize' , points , options ) ; } , _render ( ctx ) { this . callSuper ( '_render' , ctx ) ; } , } ) ; Line . fromObject = ( options , callback ) => { const { x1 , x2 , y1 , y2 } = options ; return callback ( new Line ( [ x1 , y1 , x2 , y2 ] , options ) ) ; } ; window . fabric . Line = Line ; export default Line ;