import type { PartialDeep, Promisable, ReadonlyDeep, WritableDeep } from 'type-fest';
import type { PipelineJson } from '../../pipeline/PipelineJson/PipelineJson';
import type { TaskJson } from '../../pipeline/PipelineJson/TaskJson';
import type { LlmCall } from '../../types/LlmCall';
import type { Parameters } from '../../types/Parameters';
import type { ExecutionReportJson } from '../execution-report/ExecutionReportJson';
import type { PipelineExecutorResult } from '../PipelineExecutorResult';
import type { CreatePipelineExecutorOptions } from './00-CreatePipelineExecutorOptions';
/**
 * Options for executing a single pipeline task, including task details, pipeline context, parameters, and callbacks.
 *
 * @private internal type of `executeTask`
 */
type executeSingleTaskOptions = Required<CreatePipelineExecutorOptions> & {
    /**
     * The task to be executed.
     */
    readonly currentTask: ReadonlyDeep<TaskJson>;
    /**
     * The pipeline in which the task resides, fully prepared and validated.
     */
    readonly preparedPipeline: ReadonlyDeep<PipelineJson>;
    /**
     * The parameters to pass to the task execution.
     */
    readonly parametersToPass: Readonly<Parameters>;
    /**
     * Callback invoked with partial results as the execution progresses.
     */
    onProgress(newOngoingResult: PartialDeep<PipelineExecutorResult>): Promisable<void>;
    /**
     * Optional callback invoked with each LLM call.
     */
    logLlmCall?(llmCall: LlmCall): Promisable<void>;
    /**
     * Mutable execution report object for tracking execution details.
     */
    readonly $executionReport: WritableDeep<ExecutionReportJson>;
    /**
     * String identifier for the pipeline, used in error messages and reporting.
     */
    readonly pipelineIdentification: string;
};
/**
 * Executes a single task within a pipeline, handling parameter validation, error checking, and progress reporting.
 *
 * @param options - Options for execution, including the task, pipeline, parameters, and callbacks.
 * @returns The output parameters produced by the task.
 *
 * @private internal utility of `createPipelineExecutor`
 */
export declare function executeTask(options: executeSingleTaskOptions): Promise<Readonly<Parameters>>;
export {};