/**
 * Internal utility functions used across the library
 */
import type { PropertyPath, PropertyName } from "../types.js";
/**
 * Get the string tag of a value
 */
export declare function getTag(value: unknown): string;
/**
 * Check if value is object-like (not null and typeof object)
 */
export declare function isObjectLike(value: unknown): value is object;
/**
 * Check if value is a plain object
 */
export declare function isPlainObject(value: unknown): value is Record<PropertyName, unknown>;
/**
 * Check if value is an array-like object
 */
export declare function isArrayLike(value: unknown): value is ArrayLike<unknown>;
/**
 * Convert value to string
 */
export declare function toString(value: unknown): string;
/**
 * Convert property path to array of keys
 */
export declare function toPath(path: PropertyPath): PropertyName[];
/**
 * Get nested property value
 */
export declare function getValue<T>(object: unknown, path: PropertyPath, defaultValue?: T): T | undefined;
/**
 * Set nested property value
 */
export declare function setValue(object: Record<PropertyName, any>, path: PropertyPath, value: unknown): void;
/**
 * Check if object has property at path
 */
export declare function hasPath(object: unknown, path: PropertyPath): boolean;
/**
 * Create a function that gets a property value
 */
export declare function property<T>(path: PropertyPath): (object: unknown) => T | undefined;
/**
 * Create a predicate function that checks if objects match partial properties
 */
export declare function matches<T>(source: Partial<T>): (object: T) => boolean;
/**
 * Create a predicate function that checks if objects have matching property values
 */
export declare function matchesProperty<T>(path: PropertyPath, srcValue: unknown): (object: T) => boolean;
/**
 * Deep equality comparison
 */
export declare function isEqual(a: unknown, b: unknown): boolean;
/**
 * Create a shallow clone of a value
 */
export declare function clone<T>(value: T): T;
/**
 * Get all property names (enumerable and non-enumerable)
 */
export declare function getAllKeys(object: object): string[];
/**
 * Check if value is a valid array index
 */
export declare function isIndex(value: unknown, length?: number): value is number;
/**
 * Convert iteratee shorthand to function
 */
export declare function iteratee<T, R>(func?: ((value: T, index?: number, collection?: readonly T[]) => R) | PropertyPath | Partial<T> | null): (value: T, index?: number, collection?: readonly T[]) => R;
/**
 * Identity function
 */
export declare function identity<T>(value: T): T;
/**
 * Noop function
 */
export declare function noop(): void;
/**
 * Constant function
 */
export declare function constant<T>(value: T): () => T;
/**
 * Check if running in Node.js environment
 */
export declare function isNode(): boolean;