import React from 'react'; /** * Type definitions for animation configuration utilities */ /** Common CSS timing functions with autocomplete support */ type TimingFunction = 'linear' | 'ease' | 'ease-in' | 'ease-out' | 'ease-in-out' | 'step-start' | 'step-end' | `cubic-bezier(${number}, ${number}, ${number}, ${number})` | string; /** CSS length values with common units and autocomplete */ type CSSLength = '0' | `${number}px` | `${number}rem` | `${number}em` | `${number}%` | `${number}vh` | `${number}vw` | string; /** CSS angle values */ type CSSAngle = `${number}deg` | `${number}rad` | `${number}turn` | string; interface AnimationConfig { /** Animation duration in seconds */ duration?: number; /** Animation delay in seconds */ delay?: number; /** Timing function with autocomplete for common values */ timing?: TimingFunction; /** Initial X translation with autocomplete for common units */ translateX?: CSSLength; /** Initial Y translation with autocomplete for common units */ translateY?: CSSLength; /** Initial scale (e.g., 0.8, 1.2) */ scale?: number; /** Initial rotation with autocomplete for angle units */ rotate?: CSSAngle; /** Initial blur with autocomplete for common units */ blur?: CSSLength; /** Starting opacity (0-1) */ opacityStart?: number; /** Ending opacity (0-1) */ opacityEnd?: number; } interface IntersectionObserverOptions { /** Threshold for intersection (0-1) */ threshold?: number; /** Root margin for intersection calculation */ rootMargin?: string; /** Whether to trigger animation only once */ once?: boolean; } /** * React hooks for css-motion */ /** * React hook that combines animation styles and intersection observer * Returns the element ref and computed styles * * @example * ```tsx * function MyComponent() { * const { ref, style, className, isInView } = useAnimateOnView( * presets.slideUp() * ); * return