/**
 * tool-command-worker-result — pure result-assembly helpers for the external
 * tool command dispatch WORKER (ADR-0054). These translate the worker-side
 * {@link ResultAccumulator} plus the handler's return value into the
 * serializable {@link ToolCommandResult} the supervisor replays through the
 * host's `dispatchOutput`. They hold no effect and never touch `process` — the
 * orchestration/IPC concerns stay in `tool-command-worker-entry.ts`.
 */
import { type CommandSpec, type ToolCliContext, type ToolSessionContribution } from '@opensip-cli/core';
import { type ResultAccumulator } from './tool-command-worker-context.js';
import type { ToolCommandResult } from './tool-command-dispatch-types.js';
/** The completion shape a run-producing handler returns (the session leg the host persists). */
export interface MaybeCompletion {
    readonly session?: ToolSessionContribution;
    readonly envelope?: unknown;
}
/** Drain the accumulator + the handler's return into a serializable result. */
export declare function toResult(output: ToolCommandResult['output'], acc: ResultAccumulator, session: ToolSessionContribution | undefined, returned: unknown, captureCompletionEnvelope?: boolean): ToolCommandResult;
/**
 * Fail loud when a return-valued handler (`command-result` / `signal-envelope`)
 * neither returned a value nor recorded an explicit final result — a silent
 * `undefined` would otherwise replay as an empty output. Tagged
 * `tool-handler-throw` so the supervisor surfaces a structured failure.
 */
export declare function assertReturnValuedHandlerResult(commandSpec: CommandSpec<unknown, ToolCliContext>, acc: ResultAccumulator, returned: unknown): void;
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