export declare function isClass(fn: unknown): fn is Function;
export declare function isIdentifier(str: string): boolean;
export declare function copyOwnProperties(source: object, target: object, filter?: (key: string) => boolean): void;
/**
 * Copied from bluebird/js/release/util.js
 */
export declare function isPromisified(fn: unknown): boolean;
/**
 * Determines if an object is a Promise instance
 * @param obj - The object to check
 * @returns True if the object is a Promise instance, false otherwise
 */
export declare function isPromise(obj: unknown): obj is Promise<unknown>;
/**
 * Gets all property keys from an object and its prototype chain, excluding standard
 * prototypes like Object.prototype, Array.prototype, and Function.prototype
 *
 * @param obj - The target object to get keys from
 * @param excludedProtos - An array of prototype objects to exclude keys from
 * @returns Array of property keys
 */
export declare function getObjectDataKeys(obj: object | null, excludedProtos?: object[]): string[];
/**
 * Triggers an uncaught exception in a safe way by scheduling it on the next event loop tick
 * This is used for fatal errors that should crash the process
 * @param error - The error to throw
 */
export declare function triggerUncaughtException(error: unknown): void;
export declare function toArray<T>(args: Iterable<T> | ArrayLike<T>): T[];