export declare function ownRecordValue<T>(record: Record<string, T>, key: string): T | undefined;
export declare function setOwnRecordValue<T>(record: Record<string, T>, key: string, value: T): T;
/**
 * Increment an arbitrary string-keyed counter without reading inherited
 * properties such as `constructor` or invoking the legacy `__proto__` setter.
 */
export declare function incrementRecordCount(record: Record<string, number>, key: string, amount?: number): number;
export declare function sumRecordCounts(...values: number[]): number;