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Vance IngallsandClaude Opus 4.8
189d8582f4
The rule sourced a tween's animated props from anim.properties only — the acorn
parser's to-vars. A fromTo() exposes its first ("from") vars object separately as
anim.fromProperties, so a layout or reflow prop animated only in the from-object
(e.g. tl.fromTo("#t", { left: 100, letterSpacing: "0.3em" }, { opacity: 1 }))
escaped the rule entirely and shipped stuttering. fromTo is the most common tween
form, so this was a real recall hole.
Union fromProperties into the checked property set; add the field to the lint
parse type. Registry re-scan unchanged (0 comps animate a layout prop only in a
from-object today), so no collateral.
Known remaining gaps (documented, not fixed): standalone gsap.fromTo only scans
its first vars object via regex (and aborts on nested braces); roundProps:true
(boolean form) is dropped by the parser. Both are rare and the clean fix is
disproportionate to the rule's planned sunset when drawElement render lands.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>