method Reducer.Base.prototype.filterInputimport { Reducer } from "https://deno.land/x/rimbu@1.1.0/stream/mod.ts"; const { Base } = Reducer; filterInput(pred: (value: I,index: number,halt: () => void,) => boolean, options?: { negate?: boolean; }): Reducer<I, O>Parameterspred: (value: I,index: number,halt: () => void,) => booleanoptionaloptions: { negate?: boolean; } = [UNSUPPORTED]ReturnsReducer<I, O>