What is Popmotion?
Popmotion offers a comprehensive set of animation tools for JavaScript developers, featuring keyframe, spring, and inertia animations that work with numbers, colors, and complex strings. The library provides low-level, composable functions that are portable across any JavaScript environment, making it suitable for various animation needs.
Built with TypeScript and maintaining over 95% test coverage, Popmotion ensures stability and reliability. The core animate function is less than 5kb, with individual utility functions available for import to optimize bundle size. It includes lifecycle events, playback controls, easing functions, and utility helpers for tasks like interpolation, color mixing, and value snapping.
Features
- Keyframes Animation: Animate between values with duration, easing, and offset controls
- Spring Animation: Create natural-feeling animations with stiffness, damping, and mass parameters
- Inertia Animation: Simulate momentum-based deceleration with velocity and power options
- Lifecycle Events: Hook into animation updates, completion, repetition, and stop events
- Utility Functions: Includes interpolate, mixColor, snap, clamp, and other helpers for animation tasks
Use Cases
- Creating interactive UI animations for web applications
- Building animation libraries or frameworks
- Developing game animations with spring physics
- Implementing scroll-based momentum effects
- Animating SVG elements and path definitions
