函数参数类型这章节有误

[duriann]

https://jkchao.github.io/typescript-book-chinese/typings/typeCompatibility.html#%E5%87%BD%E6%95%B0%E5%8F%82%E6%95%B0%E7%B1%BB%E5%9E%8B

划红线这段放ts里报错了

[duriann]

Type '(point: Point3D) => void' is not assignable to type '(point: Point2D) => void'.
Types of parameters 'point' and 'point' are incompatible.
Property 'z' is missing in type 'Point2D' but required in type 'Point3D'.(2322)
input.tsx(8, 3): 'z' is declared here.