feat: add motion tokens (spring, easing, duration)#4922
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adrcotfas wants to merge 9 commits into@adrcotfas/refactor/tokens_typographyfrom
Open
feat: add motion tokens (spring, easing, duration)#4922adrcotfas wants to merge 9 commits into@adrcotfas/refactor/tokens_typographyfrom
adrcotfas wants to merge 9 commits into@adrcotfas/refactor/tokens_typographyfrom
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Adds src/theme/tokens/sys/color/roles.ts with a roleToTone table keyed by (mode, contrast) and a buildScheme() function. LightTheme and DarkTheme replace their hand-duplicated color literals with a single buildScheme() call each. Output shape is identical; tone values match the existing hand-written spec.
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Hey @adrcotfas, thank you for your pull request 🤗. The documentation from this branch can be viewed here. |
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The mobile version of example app from this branch is ready! You can see it here. |
Adds the 10 MD3 shape scale tokens to theme.shapes.*, ShapeCorners for directional variants, and cornersToStyle() for mapping to RN style props. Deprecates theme.roundness in favour of theme.shapes.
Adds 15 *Emphasized entries per M3 Design Kit: Display/Headline/TitleLarge/Body use Medium (500), TitleMedium/TitleSmall/Label use Bold (700). Adds weightBold to ref.typeface. Fixes displayLarge letterSpacing (0 -> -0.25) and bodyLarge letterSpacing (0.15 -> 0.5).
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Adds theme.motion with two preset schemes (expressiveMotion default, standardMotion), M3 easing curves, and duration constants verified against the material.io spec. Includes toRawSpring() helper to convert the spec damping ratio to the raw coefficient expected by Animated.spring and Reanimated. Deprecates animation.defaultAnimationDuration in favour of theme.motion.duration.*. No component consumes the tokens yet.
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This was referenced May 5, 2026
satya164
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May 9, 2026
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No components are using this, so I assume it'll be a follow-up.
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| /** @deprecated Use `theme.motion.duration.*` instead. Will be removed in a future version. */ | ||
| defaultAnimationDuration?: number; |
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Drop deprecated values from theme.
| expressiveMotion, | ||
| standardMotion, | ||
| toRawSpring, | ||
| } from './theme/tokens/sys/motion'; |
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Remove these exports. Keep the public API surface small.
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| legacy: [0.4, 0, 0.2, 1], | ||
| legacyAccelerate: [0.4, 0, 1, 1], | ||
| legacyDecelerate: [0, 0, 0.2, 1], |
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Do we need to expose these? If these are legacy, then probably nothing on paper will use them, nor should consumers use them, so they're essentially dead tokens.
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Indeed, these were used pre M3 Expressive and we can drop them.
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Motivation
Adds theme.motion with two preset schemes (expressiveMotion default, standardMotion), M3 easing curves, and duration constants verified against the material.io spec. Includes toRawSpring() helper to convert the spec damping ratio to the raw coefficient expected by Animated.spring and Reanimated. Deprecates animation.defaultAnimationDuration in favour of theme.motion.duration.*. No component consumes the tokens yet.
Related issue
See https://www.notion.so/callstack/React-Native-Paper-Foundation-for-MD3-Expressive-34c5d027c0f880edba3df107cd35946f?source=copy_link
Merge order:
Test plan
yarn typescript-- no new type errorsyarn test-- all tests pass