Is it possible to pick fields matching a type from an interface?

[midnight crest]

it is possible. here's an implementation: https://github.com/piotrwitek/utility-types/blob/7c194c00b986711b99dead35481cf4ff0a7aa3d9/src/mapped-types.ts#L191-L194

[olive pecan]

export type PickByValue<T, ValueType> = Pick<
  T,
  { [Key in keyof T]-?: T[Key] extends ValueType ? Key : never }[keyof T]
>;