在typescript中导出联合类型别名

Question

Is it possible to export something like this:

export TypeA | TypeB as TypeAB;

and declare a variable of TypeAB that can be either of TypeA or TypeB :

import {TypeAB} from './typeab';
var ab: TypeAB;

Answer 1

是的，只需要类型别名的正确语法：

export type TypeAB = TypeA | TypeB;