docs(skill): version-aware Reanimated default mapping (v2/v3 vs v4)#39
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janicduplessis merged 1 commit intomainfrom Apr 14, 2026
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Reanimated v4 changed spring defaults significantly (damping 120, stiffness 900, mass 4 — critically damped). The skill now detects the Reanimated version from package.json in Phase 1 and uses the correct default table for migration.
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Summary
Reanimated v4 changed spring defaults significantly — from a bouncy spring (damping 10, stiffness 100, mass 1) to a critically damped snappy spring (damping 120, stiffness 900, mass 4). Their rationale was that the old physics-based params were too sensitive to start/end conditions.
The migration skill now detects the Reanimated version from
package.jsonin Phase 1 and uses the correct default mapping table, so migrated animations preserve their original behavior regardless of which Reanimated version the project uses.Test Plan