Resolves the classic strip's density rung from its own container width against the step count and two per-step px...
createStripDensity
Functioncommon/stepper
projects/common/stepper/strip-density.ts
Description#
Resolves the classic strip's density rung from its own container
width against the step count and two per-step px thresholds. Pure
create* factory, sibling to createStepperDisplayMode - it owns a
ResizeObserver the way the display-mode factory owns a
matchMedia listener, and returns a single derived Signal.
'comfortable' density short-circuits to 'full' (no measurement
dependency). Before the first measurement (width === 0) and for an
empty strip the rung is 'full', so the strip never flashes
'minimal' on mount.