import type { RunMetadata } from "./runtime-metadata.js";
export type WorkflowStateValue = null | boolean | number | string | ReadonlyArray<WorkflowStateValue> | {
    readonly [key: string]: WorkflowStateValue;
};
export type WorkflowState = {
    get(key: string): Promise<WorkflowStateValue | undefined>;
    set(key: string, value: WorkflowStateValue | undefined): void;
};
export declare function createWorkflowStepState(metadata: Pick<RunMetadata, "workerId">, stepId: string): {
    state: WorkflowState;
    run<T>(fn: () => T | Promise<T>): Promise<T>;
};
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