Enum as generic

[nandorojo]

🍩 Feature Request

Is there a way to use an enum as a generic?

Describe the solution you'd like

Say that I have an enum, and I want to set the color for each enum value.

enum Status {
  ACTIVE,
  PENDING
}

enumColors(Status, { [Status.ACTIVE]: 'red' })

Is there a way to do this dynamically based on a generic for the enum?

Describe alternatives you've considered

I tried this:

declare function enumColors<Key extends string, Value extends string, Enum extends { [key in Key]: Value }>(
  enumeration: Enum,
  colors: { [key in Key]?: string }
)

Playground link here.

Teachability, Documentation, Adoption, Migration Strategy

This is the error I see:

[nandorojo]

Ah, the solution was to use the value, not key:

declare function enumColors<Key extends string, Value extends string, Enum extends { [key in Key]: Value }>(
  enumeration: Enum,
  colors: { [value in Value]?: string } // Value, not Key
)