/// <reference types="node" />
import stream from 'stream';
import VinylFile from 'vinyl';
import { Function1, TT$ } from '@upradata/util';
export interface IfPassThroughOptions {
    condition: Function1<VinylFile, TT$<boolean>>;
    true: Function1<VinylFile, TT$<void>>;
    false?: Function1<VinylFile, TT$<void>>;
}
export declare function ifPassthrough(options?: IfPassThroughOptions): stream.Transform;