ProxySandbox模式子应用取值源码疑问

[fujingzhi]

const value = propertiesWithGetter.has(p)
? (rawWindow as any)[p]
: p in target
? (target as any)[p]
: (rawWindow as any)[p];
ProxySandbox 这种模式子应用通过getter取值时，为什么优先判断propertiesWithGetter.has(p)这个条件，为真为什么就直接从rawWindow取值了？

[kuitos]

因为通过 rawWindow.prop 的方式取值才能触发原始的 getter 调用，参考这个 pr 跟 test case #641