Hardcoded durations and curves

58 measured

The token linter polices type, spacing, radius and colour. It has no entry for duration or easing, which is a complete explanation for every site below. Adding those entries turns rubric criterion 3 from a review question into a build failure.Decide here: What each hardcoded site becomes, and whether the swap is visible at all.

58Hardcoded sitesmeasured against core@0.5.0

34Durations and delays

24Curves

12Durations with no curvesilently taking the CSS default

Four families, two of them blocked

Reduced-motion escapes

19 sitesblocked

Every one of these is the same idiom: collapse a transition to nothing when the user has asked for less motion. It is not sloppiness, and it is not safe to sweep blind — a zero duration fires no transitionend, so anything sequencing off that event breaks. The 0.01s spelling exists to keep the event.

Blocked: Decide whether --duration-instant is 0 or 0.01ms before sweeping any of these.

core/hooks/containerReveal.stylex.ts:253core/hooks/containerReveal.stylex.ts:261core/hooks/containerReveal.stylex.ts:267core/BottomSheet/BottomSheet.tsx:94core/BottomSheet/BottomSheetPanel.tsx:149core/BottomSheet/BottomSheetSwitcher.tsx:105+13 more in the table below

Table interaction tint

12 sitesmechanical

Ten sites across columnResize, groupedRows, rowExpansion, stickyColumns and tree: seven 150ms durations and three bare `ease` curves, several of them the two halves of one `transition` shorthand. This resolves an open question in the brief — its "nine hardcoded values in Table" and its "six hardcoded 150ms values in Table tree" are the same set counted twice, not fifteen sites. 150ms and the token’s 175ms are near-indistinguishable at 1×, so what this family buys is the lint rule, not a visual change.

Today — 150ms, default curve

Row one

Row two

Row three

Hardcoded 150ms with the CSS default curve.

Proposed — --duration-state, --ease-state

Row one

Row two

Row three

The state token, at 175ms with --ease-state.

state

175ms

Put the rail on 4× or 8× if you want to see the difference between 150 and 175 at all. That it is hard to see at 1× is the honest finding, and it is the argument for treating this family as a lint fix rather than a design change.

core/Table/plugins/columnResize/useTableColumnResize.tsx:248core/Table/plugins/columnResize/useTableColumnResize.tsx:248core/Table/plugins/columnResize/useTableColumnResize.tsx:248core/Table/plugins/columnResize/useTableColumnResize.tsx:248core/Table/plugins/groupedRows/useTableGroupedRows.tsx:179core/Table/plugins/rowExpansion/useTableRowExpansion.tsx:87+6 more in the table below

Ambient loops

3 sitesblocked

StatusDot at 2s and Chat at 1.5s, both outside a scale that stops at 1300ms. They did not bypass the tokens by accident — there is no token that reaches. This group cannot be swept until the slow band is extended or ambient motion is declared a separate concern.

Today — hardcoded, outside the scale

Today the loop slows to 3s rather than stopping. Slower vestibular motion is still vestibular motion, and it reads as a hung interface.

Stopped

Degrade: loops stop and are replaced with a static determinate state. Opacity and colour feedback survive; movement does not.

Blocked: Needs the ambient-band decision.

core/Chat/ChatMessageMetadata.tsx:77lab/ChatReasoning/ChatReasoning.tsx:152core/StatusDot/StatusDot.tsx:56

Curves authored by hand

20 sitesmechanical

Mostly linear, and mostly correct: a progress bar and a scroll-driven wheel should be linear. The exception is the sheet exit, which authors a full cubic-bezier with a comment measuring why the standard curve fails. That comment is the specification for --ease-exit.

core/BottomSheet/BottomSheet.tsx:109core/BottomSheet/BottomSheetPanel.tsx:172core/BottomSheet/BottomSheetSwitcher.tsx:114core/Chat/ChatDictationButton.tsx:75core/Chat/ChatMessageMetadata.tsx:78lab/Chat/ChatTypingIndicator.tsx:79+14 more in the table below

Every site

Filter sites

58 of 58

Component	Site	Property	Today	Becomes
(shared)	core/hooks/containerReveal.stylex.ts:253	transitionDelay	0s	--duration-instant
(shared)	core/hooks/containerReveal.stylex.ts:261	transitionDelay	0s	--duration-instant
(shared)	core/hooks/containerReveal.stylex.ts:267	transitionDelay	0s	--duration-instant
(shared)	core/hooks/useKeyboardHint.tsx:135	transitionDuration	150ms	--duration-state
BottomSheet	core/BottomSheet/BottomSheet.tsx:94	transitionDuration	0.01s	--duration-instant
BottomSheet	core/BottomSheet/BottomSheet.tsx:109	transitionTimingFunction	linear	--ease-linear
BottomSheet	core/BottomSheet/BottomSheetPanel.tsx:149	transitionDuration	0.01s	--duration-instant
BottomSheet	core/BottomSheet/BottomSheetPanel.tsx:172	transitionTimingFunction	cubic-bezier(0.3, 0, 0.6, 0.6)	--ease-exit
BottomSheet	core/BottomSheet/BottomSheetSwitcher.tsx:105	transitionDuration	0.01s	--duration-instant
BottomSheet	core/BottomSheet/BottomSheetSwitcher.tsx:114	transitionTimingFunction	linear	--ease-linear
Button	core/Button/Button.tsx:380	animationDuration	1ms	--duration-instant
Chat	core/Chat/ChatComposerDrawer.tsx:208	transitionDelay	0ms	--duration-instant
Chat	core/Chat/ChatDictationButton.tsx:75	transitionTimingFunction	ease-out	--ease-state
Chat	core/Chat/ChatMessageMetadata.tsx:77	animationDuration	1.5s	no token reaches
Chat	core/Chat/ChatMessageMetadata.tsx:78	animationTimingFunction	ease-in-out	--ease-state
Chat	lab/Chat/ChatTypingIndicator.tsx:79	animationTimingFunction	ease-in-out	--ease-state
Chat	lab/Chat/ChatTypingIndicator.tsx:85	animationDelay	160ms	--duration-state
Chat	lab/Chat/ChatTypingIndicator.tsx:88	animationDelay	320ms	--duration-enter
ChatReasoning	lab/ChatReasoning/ChatReasoning.tsx:152	animationDuration	4s	no token reaches
ChatReasoning	lab/ChatReasoning/ChatReasoning.tsx:153	animationTimingFunction	linear	--ease-linear
CircularProgress	lab/CircularProgress/CircularProgress.tsx:188	animationTimingFunction	linear	--ease-linear
CircularProgress	lab/CircularProgress/CircularProgress.tsx:210	animationTimingFunction	ease-in-out	--ease-state
CommandPalette	core/CommandPalette/CommandPaletteInput.tsx:62	transitionDuration	1ms	--duration-instant
CommandPalette	core/CommandPalette/CommandPaletteInput.tsx:63	transitionDelay	150ms	--duration-state
DateInput	core/DateInput/TouchDateField.tsx:254	transitionTimingFunction	linear	--ease-linear
DateInput	core/DateInput/TouchDateField.tsx:256	transitionDuration	0.01s	--duration-instant
DateInput	core/DateInput/TouchDateField.tsx:311	transitionTimingFunction	linear	--ease-linear
DateInput	core/DateInput/TouchDateField.tsx:313	transitionDuration	0.01s	--duration-instant
DateInput	core/DateInput/TouchDateField.tsx:375	transitionDuration	0.01s	--duration-instant
DateInput	core/DateInput/TouchDateField.tsx:390	transitionTimingFunction	linear	--ease-linear
DateInput	core/DateInput/TouchDateField.tsx:392	transitionDuration	0.01s	--duration-instant
DateInput	core/DateInput/TouchDateField.tsx:442	transitionDuration	0.01s	--duration-instant
DateInput	core/DateInput/TouchDateField.tsx:492	transitionTimingFunction	linear	--ease-linear
DateInput	core/DateInput/TouchDateField.tsx:494	transitionDuration	0.01s	--duration-instant
DateInput	core/DateInput/Wheel.tsx:172	animationTimingFunction	linear	--ease-linear
Drawer	lab/Drawer/Drawer.tsx:161	transitionDuration	0.01s	--duration-instant
Drawer	lab/Drawer/Drawer.tsx:234	transitionDuration	0.01s	--duration-instant
Lightbox	core/Lightbox/Lightbox.tsx:190	transitionTimingFunction	ease-out	--ease-state
LogStream	lab/LogStream/LogStream.tsx:173	transitionTimingFunction	ease-out	--ease-state
MobileNav	core/MobileNav/MobileNav.tsx:132	transitionDuration	0.01s	--duration-instant
MobileNav	core/MobileNav/MobileNav.tsx:162	transitionDuration	0.01s	--duration-instant
ProgressBar	core/ProgressBar/ProgressBar.tsx:260	animationTimingFunction	ease-in-out	--ease-state
Spinner	core/Spinner/Spinner.tsx:265	animationTimingFunction	linear	--ease-linear
StatusDot	core/StatusDot/StatusDot.tsx:56	animationDuration	2s	no token reaches
StatusDot	core/StatusDot/StatusDot.tsx:57	animationTimingFunction	ease-in-out	--ease-state
Stepper	core/Stepper/Step.tsx:388	transitionTimingFunction	linear	--ease-linear
Table	core/Table/plugins/columnResize/useTableColumnResize.tsx:248	transition	150ms	--duration-state
Table	core/Table/plugins/columnResize/useTableColumnResize.tsx:248	transition	150ms	--duration-state
Table	core/Table/plugins/columnResize/useTableColumnResize.tsx:248	transition	ease	--ease-state
Table	core/Table/plugins/columnResize/useTableColumnResize.tsx:248	transition	ease	--ease-state
Table	core/Table/plugins/groupedRows/useTableGroupedRows.tsx:179	transitionDuration	150ms	--duration-state
Table	core/Table/plugins/rowExpansion/useTableRowExpansion.tsx:87	transitionDuration	150ms	--duration-state
Table	core/Table/plugins/stickyColumns/useTableStickyColumns.tsx:234	transition	150ms	--duration-state
Table	core/Table/plugins/stickyColumns/useTableStickyColumns.tsx:234	transition	ease	--ease-state
Table	core/Table/plugins/stickyColumns/useTableStickyColumns.tsx:260	transition	150ms	--duration-state
Table	core/Table/plugins/stickyColumns/useTableStickyColumns.tsx:260	transition	ease	--ease-state
Table	core/Table/plugins/tree/useTableTreeData.tsx:251	transitionDuration	150ms	--duration-state
Table	core/Table/plugins/tree/useTableTreeData.tsx:267	transitionDuration	150ms	--duration-state

Literals in use

Value	Sites
0.01s	13
linear	11
150ms	10
ease-in-out	5
ease	4
ease-out	3
0s	3
1ms	2
cubic-bezier(0.3, 0, 0.6, 0.6)	1
0ms	1
1.5s	1
2s	1
160ms	1
320ms	1
4s	1

By component

Component	Sites
Table	12
DateInput	11
Chat	7
BottomSheet	6
(shared)	4
CommandPalette	2
MobileNav	2
StatusDot	2
ChatReasoning	2
CircularProgress	2
Drawer	2
Button	1
Lightbox	1
ProgressBar	1
Spinner	1
Stepper	1
LogStream	1

Sweep order

Step	Why this order
1. Land the semantic tokens as aliases	Nothing to migrate to until they exist, and aliasing means nothing shifts perceptually while the sweep runs.
2. Add the lint rules in warn mode	Produces the real inventory continuously, so this page stops being a snapshot.
3. Answer the two blocked families	Whether --duration-instant is 0 or 0.01ms, and whether the slow band grows an ambient tier.
4. Sweep	Mechanical once the tokens and the answers both exist.
5. Flip lint to error	Only once the count is zero, or the remainder is explicitly allowlisted.

The rule stub is on Export tuning. The reduced-motion decision that blocks family one is on Reduced motion.