layer.size < object>

Allows you to set or capture the width and height values of a layer.
译：允许您设置或捕捉一个图层的宽度和高度值

layerA = new Layer

print layerA.size
# Output: { width: 100, height: 100 } 

layerA.size =
    width: 10
    height: 10

print layerA.size
# Output: { width: 10, height: 10 } 

print layerA.width
# Output: 10