export interface JsonSnapshot {
    async?: boolean;
    characters?: number;
    containers?: number;
    valid: boolean;
    value?: unknown;
}
/** Validate and copy a JSON value without invoking any property more than once. */
export declare function snapshotJsonValue(value: unknown, maximumContainers?: number, maximumCharacters?: number): JsonSnapshot;
export declare function countJsonContainersUpTo(value: unknown, maximum: number): number;