在Typescript中有两种枚举：
>经典枚举：
在TS到JS转换期间,它们被转换为真实对象,因此它们在运行时存在.
enum Response {
No = 0,
Yes = 1,
}
const yes = Response.Yes; // Works at runtime
const nameOfYes = Response[yes]; // Also works at runtime because a reverse mapping is also generated during transpilation
> const enum(你正在使用的那个)：
在JS中的转换过程中删除了const枚举,因此您无法在运行时使用它们.根据TS doc,存在const枚举,以避免在访问枚举值时支付额外生成的代码和额外的间接费用.
const enum Response {
No = 0,
Yes = 1,
}
const yes = Response.Yes; // At runtime: ReferenceError: Response is not defined
const nameOfYes = Response[yes]; // During transpilation: TS2476: A const enum member can only be accessed using a string literal.
所以只需将你的const枚举更改为枚举,你的运行时错误就会消失.
