export declare const ATOMIC_JSON_WRITER: unique symbol;
export interface AtomicJsonSource {
    [ATOMIC_JSON_WRITER](fd: number): void;
}
/** Supports property order/whitespace from ordinary JSON writers. Unknown
 * root values remain bounded and syntax-checked; duplicate known keys fail. */
export declare function anchorEntries(file: string): Generator<unknown>;
/** Serialization callback runs inside the runtime's existing durable atomic
 * writer. Failure removes the temporary file; no partial log is published. */
export declare function appendedAnchorLog(file: string | undefined, next: unknown, validate: (value: unknown, sequence: number, previous: string | null) => value is {
    hash: string;
}): AtomicJsonSource;
//# sourceMappingURL=policy-anchor-log.d.ts.map