/**
 * Collect-then-suspend execution driver (P0.3).
 *
 * Runs a workflow function against a WorkflowContext without awaiting it to
 * completion: durable-step methods park on never-settling promises and
 * register commands on the context, so a `Promise.all` fan-out registers every
 * branch's first step before the workflow yields. This driver drains the
 * microtask queue until either the workflow settles or no new durable actions
 * register for one tick, then reports the outcome.
 *
 * Used by the Worker for real task execution and exported for tests.
 */
import type { WorkflowCommand } from '../types.js';
import type { WorkflowContext } from './workflow-context.js';
export type WorkflowExecutionOutcome = {
    status: 'completed';
    result: unknown;
} | {
    status: 'failed';
    error: unknown;
} | {
    status: 'suspended';
    commands: WorkflowCommand[];
}
/** Quiescent with nothing durable pending — the workflow is awaiting
 *  something the server can never resolve (e.g. a bare setTimeout). */
 | {
    status: 'stalled';
};
export declare function executeWorkflowSlice(ctx: WorkflowContext, run: () => Promise<unknown>): Promise<WorkflowExecutionOutcome>;