TypeScript：按字符串比较两个枚举

Question

我有 2 个枚举：

enum Insurer {
  PREMERA = 'premera_blue_cross',
  UHC = 'united_health_care'
}

enum ProductSource {
  PremeraBlueCross = 'premera_blue_cross',
  UnitedHealthCare = 'united_health_care'
}

我尝试检查 Insurer 数组是否包含 ProductSource：

const insurerArr: Insurer[] = [Insurer.PREMERA, Insurer.UHC]
insurerArr.includes(ProductSource.PremeraBlueCross)

但是 TS 编译器报错:

Argument of type 'ProductSource' is not assignable to parameter of type 'Insurer'.

有一种方法可以在不转换为 string 然后转换为另一个枚举的情况下进行比较吗？

Answer 1

您可能要考虑切换到 type 而不是 enum:

type Insurer = 'premera_blue_cross' | 'united_health_care';
type ProductSource = 'premera_blue_cross' | 'united_health_care';
const insurerArr: Insurer[] = ['premera_blue_cross', 'united_health_care'];
insurerArr.includes('premera_blue_cross');

TypeScript：按字符串比较两个枚举

TypeScript: compare two enums by string

javascript

types

typescript