import type { DataSourceFnBuilder } from './data-source-fn-builder.types';
import type { MapOutputFn, WithMapOutput } from './with-map-output.types';
/**
 * Adds a mapOutputFn and corresponding types to a DataSourceFnBuilder.
 * When built, the output type of the built function will correspond to the
 * Ok type of this function.
 *
 * @param mapOutputFn - Called when mapping the output of the builder's `fn`.
 * @return A Result where the Ok type is whatever type we are mapping the output to.
 */
export declare const withMapOutput: <MapOutputToType, OutputType, InputType = undefined, MapInputFromType = never>(mapOutputFn: MapOutputFn<MapOutputToType, OutputType, InputType, MapInputFromType>) => <BuilderType extends DataSourceFnBuilder>(builder: BuilderType) => BuilderType & import("./with-map-output.types").WithMapOutputFn<MapOutputToType, OutputType, InputType, MapInputFromType> & import("./with-map-output.types").WithMapOutputToType<MapOutputToType> & import("./data-source-fn-builder.types").WithOutputType<OutputType>;
/**
 * A type guard to determine if a builder has a mapOutputFn.
 *
 * @param builder - Any DataSourceFnBuilder
 * @return boolean
 */
export declare const hasMapOutputFn: <BuilderType, MapOutputToType, OutputType, InputType = undefined, MapInputFromType = never>(builder?: BuilderType | undefined) => builder is BuilderType & import("./with-map-output.types").WithMapOutputFn<MapOutputToType, OutputType, InputType, MapInputFromType> & import("./with-map-output.types").WithMapOutputToType<MapOutputToType> & import("./data-source-fn-builder.types").WithOutputType<OutputType>;