如何合并联合文字类型

Question

我有以下内容：

export type UHaem = 'haem.cbc' | 'haem.rbc'
export type UChem = 'chem.glucose' | 'chem.electrolytes'

如何将两者合并以获得最终类型，如下所示：

export type ULab = 'haem.cbc' | 'haem.rbc' | chem.glucose' | 'chem.electrolytes'

Answer 1

就这么简单：

export type ULab = UHaem | UChem;