/**
 * Type guard to check if a value is a valid Date object.
 *
 * @param value The value to check.
 * @returns `true` if the value is a valid Date object, otherwise `false`.
 */
export declare function isDate(value: unknown): value is Date;
/**
 * Type guard to check if a value is a valid Date object.
 *
 * @param record - The record to retrieve the value from.
 * @param key - The key of the value to retrieve.
 * @returns The value associated with the key, or undefined if the key doesn't exist.
 */
export declare function tryGet<T extends Record<string, any>, K extends keyof T>(record: T, key: K): T[K] | undefined;
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