import type { FactoryState, IterationState } from '../types.js';
import type { StatePaths } from './paths.js';
export declare class StateError extends Error {
    readonly path: string;
    readonly cause?: unknown | undefined;
    constructor(message: string, path: string, cause?: unknown | undefined);
}
export declare function readFactoryState(paths: StatePaths): Promise<FactoryState>;
export declare function writeFactoryState(paths: StatePaths, state: FactoryState): Promise<void>;
export declare function readIterationState(paths: StatePaths, slug: string): Promise<IterationState | null>;
export declare function writeIterationState(paths: StatePaths, state: IterationState): Promise<void>;
export declare function isKillSwitchSet(paths: StatePaths): Promise<boolean>;
export interface HistoryRecord {
    readonly slug: string;
    readonly source: string;
    readonly endedAt: string;
    readonly outcome: 'shipped' | 'partial-shipped' | 'failed';
    readonly haltReason?: string;
    readonly durationMs: number;
    readonly repoCount: number;
}
export declare function appendHistory(paths: StatePaths, record: HistoryRecord): Promise<void>;
export declare function readHistory(paths: StatePaths): Promise<HistoryRecord[]>;
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