function indexByimport { indexBy } from "https://dotland.deno.dev/x/rambda@9.4.1/files/index.d.ts"; indexBy<T, K extends string | number = string>(condition: (key: T) => K, list: T[]): [key in K]: TindexBy<T, K extends string | number | undefined = string>(condition: (key: T) => K, list: T[]): [key in NonNullable<K>]?: TindexBy<T, K extends string | number = string>(condition: (key: T) => K): (list: T[]) => [key in K]: TindexBy<T, K extends string | number | undefined = string>(condition: (key: T) => K | undefined): (list: T[]) => [key in NonNullable<K>]?: TindexBy<T>(condition: string, list: T[]): { [key: string]: T; }indexBy<T>(condition: string): (list: T[]) => { [key: string]: T; }Type ParametersToptionalK extends string | number = stringParameterscondition: (key: T) => Klist: T[]Returns[key in K]: TType ParametersToptionalK extends string | number | undefined = stringParameterscondition: (key: T) => Klist: T[]Returns[key in NonNullable<K>]?: TType ParametersToptionalK extends string | number = stringParameterscondition: (key: T) => KReturns(list: T[]) => [key in K]: TType ParametersToptionalK extends string | number | undefined = stringParameterscondition: (key: T) => K | undefinedReturns(list: T[]) => [key in NonNullable<K>]?: TType ParametersTParameterscondition: stringlist: T[]Returns{ [key: string]: T; }Type ParametersTParameterscondition: stringReturns(list: T[]) => { [key: string]: T; }