如何在 typescript 中键入 map 枚举值

Question

I have an enum type which looks this:

export enum API_TYPE {
  INDEX = "index_api",
  CREATE = "create_api",
  SHOW = "show_api",
  UPDATE = "update_api",
  DELETE = "destroy_api"
};

now, I have a function which takes a number and api_type parameter

export function abc (id: number, api_type:?) => 

for this function, possible values for api_type would be values of keys of enum api_type

What is the best way to discuss type of api_type parameter of function abc ?

One way would be to export type Api_Type = "index_api" | "create_api" | "show_api" | "update_api" | "destroy_api" export type Api_Type = "index_api" | "create_api" | "show_api" | "update_api" | "destroy_api"

and then

export function abc (id: number, api_type:Api_Type) => 

but this way if I add new property (key) to enum API_TYPE { i would also have to remember to manually add it to Api_Type

Is there a way, I can map enum value to a type? or a better way to do this?

Answer 1

enum ApiType {
  INDEX = "index_api",
  CREATE = "create_api",
  SHOW = "show_api",
  UPDATE = "update_api",
  DELETE = "destroy_api"
};

 function abc (id: number, api_type:ApiType) {
    console.log(api_type);
 }

Here is a Demo Link