/**
 * A store file exists but could not be read or parsed. Callers must not treat
 * this as empty data: saving after it would erase the records on disk.
 */
export declare class ActorStoreReadError extends Error {
    readonly filePath: string;
    constructor(filePath: string, detail: string, options?: {
        cause?: unknown;
    });
}
/**
 * Read and parse a JSON store file. A missing file returns `undefined`; any
 * other read or parse failure throws ActorStoreReadError.
 */
export declare const readStoreJson: (filePath: string) => unknown;
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