import type { ContextOperationRequest } from '../context.ts';
import type { ComposedWorkflowInterceptor } from '../interceptor.ts';
import type { StartOptions, WorkflowState } from '../types.ts';
import type { WorkflowHandle } from './handles.ts';
import type { EngineInternals } from './internals.ts';
type ChildWorkflowOperation = Extract<ContextOperationRequest, {
    type: 'child-workflow';
}>;
export type ChildWorkflowOperationCallbacks = {
    runOperationWithResult: (workflowId: string, operation: ChildWorkflowOperation, execute: () => Promise<unknown>) => Promise<void>;
    /**
     * `skipAdmissionIdCheck` (WFT-95, internal only) is threaded straight through
     * to `startWorkflow`'s parameter of the same name — see its doc comment. It
     * is NEVER part of the public `StartOptions` a caller passes; only
     * `dispatchChildWorkflowStart`'s crash-reattach retry sets it, and only
     * after confirming a matching persisted child record already exists for
     * `childWorkflowId`. This retry always passes the literal `'reattach-only'`,
     * not `true`: the confirming read here is separate from
     * `startWorkflow`'s own atomic re-check, so `'reattach-only'` fences the
     * bypass to that re-check actually finding a match to reattach to (see
     * `startWorkflow`'s doc comment for the full TOCTOU race this closes).
     */
    start: (type: string, input: unknown, options?: StartOptions, skipAdmissionIdCheck?: boolean | 'reattach-only') => Promise<WorkflowHandle>;
    loadWorkflowState: (workflowId: string) => Promise<WorkflowState | null>;
    getHandle: (workflowId: string) => WorkflowHandle;
    getComposedWorkflowInterceptor: () => ComposedWorkflowInterceptor | null;
};
export declare function processChildWorkflowOperation(internals: EngineInternals, workflowId: string, operation: ChildWorkflowOperation, callbacks: ChildWorkflowOperationCallbacks): Promise<void>;
export declare function assertChildWorkflowNestingDepth(internals: EngineInternals, workflowId: string): number;
export declare function getWorkflowNestingDepth(internals: EngineInternals, workflowId: string): number;
export declare function executeChildWorkflow(internals: EngineInternals, workflowId: string, operation: ChildWorkflowOperation, currentDepth: number, callbacks: Pick<ChildWorkflowOperationCallbacks, 'getComposedWorkflowInterceptor' | 'getHandle' | 'loadWorkflowState' | 'start'>): Promise<unknown>;
export {};