在打字稿中，属性装饰器可以推断出可选类型吗？

Question

In typescript, can a property decorator infer an optional type?

Ie If you have the following:

@Column()
ua?: string

Could @Column() recognise that ua is an optional type?

Answer 1

No, you can't. Right now the only data you can read from the decorator is the type of the property, name of the property, and class where this property is (even this is achieved throw the reflect-metadata ).