TS Utilities

ts

// Extract the desired values from a union of objects

type ExtractUnionValues<T extends {}, ExcludProps extends string = never> =  T extends Extract<T, { [K in infer P]: any }> ? T[Exclude<P, ExcludProps>] : never

type PickUnionValues<T extends {}, Props extends string = never> =  T extends Extract<T, { [K in infer P]: any }> ? T[Extract<P, Props>] : never

// alternative implementation
type ExtractUnionValues<T extends {}, ExcludedProps extends string = never> =  T extends {} ? Omit<T, ExcludedProps>[keyof Omit<T, ExcludedProps>]: never

type PickUnionValues<T extends {}, Props extends string = never> =  T extends {} ? Pick<T, Extract<keyof T, Props>>[keyof Pick<T, Extract<keyof T, Props>>]: never