import { type ClassicStateProjection, type LegacyStateSummary } from './classic-state.js';
export interface ReadClassicStateOptions {
    migrate?: boolean;
}
export declare function readClassicState(changeDir: string, options?: ReadClassicStateOptions): Promise<ClassicStateProjection>;
export declare function readLegacyState(changeDir: string): Promise<LegacyStateSummary>;
export declare function writeClassicState(changeDir: string, projection: Omit<ClassicStateProjection, 'unknownKeys'> & {
    unknownKeys?: string[];
}, options?: {
    beforeCommit?: () => void | Promise<void>;
}): Promise<void>;
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