import { Position, Size } from '../../types/core';
/**
 * Check if two positions are different
 */
export declare const hasPositionChanged: (prev: Position | undefined | null, next: Position | undefined | null) => boolean;
/**
 * Check if two positions are equal
 */
export declare const arePositionsEqual: (a: Position | undefined | null, b: Position | undefined | null) => boolean;
/**
 * Check if two sizes are different
 */
export declare const hasSizeChanged: (prev: Size | undefined | null, next: Size | undefined | null) => boolean;
/**
 * Check if two sizes are equal
 */
export declare const areSizesEqual: (a: Size | undefined | null, b: Size | undefined | null) => boolean;
/**
 * Check if any of multiple positions have changed
 * Useful for memo comparisons involving multiple position sources
 */
export declare const hasAnyPositionChanged: (pairs: Array<[Position | undefined | null, Position | undefined | null]>) => boolean;
/**
 * Check if any of multiple sizes have changed
 */
export declare const hasAnySizeChanged: (pairs: Array<[Size | undefined | null, Size | undefined | null]>) => boolean;