02 ex. Convert Action to generic

Author: Ne4to777

exercises/02-roleBasedAccess.code.ts

@@ -1,12 +1,12 @@
 const userAccessModel = {
-  user: ["update-self", "view"],
-  admin: ["create", "update-self", "update-any", "delete", "view"],
-  anonymous: ["view"],
-} as const;
+    user: ["update-self", "view"],
+    admin: ["create", "update-self", "update-any", "delete", "view"],
+    anonymous: ["view"],
+} as const
 
-export type Role = keyof typeof userAccessModel;
-export type Action = typeof userAccessModel[Role][number];
+export type Role = keyof typeof userAccessModel
+export type Action<R extends Role> = typeof userAccessModel[R][number]
 
-export const canUserAccess = (role: Role, action: Action) => {
-  return (userAccessModel[role] as ReadonlyArray<Action>).includes(action);
-};
+export const canUserAccess = <R extends Role>(role: R, action: Action<R>) => {
+    return (userAccessModel[role] as ReadonlyArray<Action<R>>).includes(action)
+}