export declare function asRecord(value: unknown): Record<string, unknown>;
export declare function readStringField(record: Record<string, unknown> | null | undefined, key: string): string | undefined;
export declare function asOptionalRecord(value: unknown): Record<string, unknown> | undefined;
export declare function asNullableRecord(value: unknown): Record<string, unknown> | null;
export declare function asOptionalObjectRecord(value: unknown): Record<string, unknown> | undefined;
export declare function asNullableObjectRecord(value: unknown): Record<string, unknown> | null;