variable Reducer.firstWhereimport { Reducer } from "https://deno.land/x/rimbu@1.1.0/stream/main/reducer.ts"; const { firstWhere } = Reducer; Returns a Reducer that remembers the first input value for which the given pred function returns true. ExamplesExample 1 console.log(Stream.range({ amount: 10 }).reduce(Reducer.firstWhere(v => v > 5))) // => 6 type{ <T>(pred: (value: T, index: number) => boolean, options?: { negate?: boolean; }): Reducer<T, T | undefined>; <T, O>(pred: (value: T, index: number) => boolean, options: { negate?: boolean; otherwise: OptLazy<O>; }): Reducer<T, T | O>; }