Complex timelines

When to activate

Use on tasks involving relative offsets, labels, reversibility, orchestration. For unrelated backend tasks do not load this skill.

Implementation sequence

1. Specify timeline: targets, start/end states, duration, easing, repeat, pause, reversal, cleanup.
2. Import named Anime.js v4 APIs into client-only lifecycle; do not use v3 anime({...}) signatures.
3. Use transforms and opacity for animation; sequence with timeline rather than disconnected timeouts.
4. Bind scroll to normalized progress and apply exactly one owner per property.
5. Implement reduced-motion and cleanup; test reverse scroll, refresh at mid-scroll and resize.

Task-specific requirements

• Scope: relative offsets, labels, reversibility, orchestration. Design the full execution path, not a screenshot placeholder.
• Identify dependency version and actual supported API signature; avoid inventing APIs.
• Use original code, or install licensed upstream through its maintained tool if the user wants upstream code.
• Choose measurable states, error handling, accessibility and performance budgets.

Implementation starter

Implementation notes: Model relative offsets, labels, reversibility, orchestration as explicit states, define input/output props and independent cleanup. Read master reference(s) below before writing code.

Evidence / acceptance

• Prove deterministic playback in forward/reverse scroll; no timer leaks; reduced-motion shows full content.
• Test common, edge, interrupted, accessibility and responsive states; provide concrete artifacts/evidence.

Deep references

• ../perfect-ai-master/references/01-animejs-motion.md
• ../perfect-ai-master/references/06-motion-recipes.md
• ../perfect-ai-master/references/16-animejs-api-matrix.md