[StepConnector][StepContent][StepLabel] Remove deprecated props and classes#48058
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siriwatknp merged 12 commits intomui:masterfrom Mar 23, 2026
Merged
[StepConnector][StepContent][StepLabel] Remove deprecated props and classes#48058siriwatknp merged 12 commits intomui:masterfrom
siriwatknp merged 12 commits intomui:masterfrom
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siriwatknp
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mj12albert
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Mar 23, 2026
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| if (transitionDurationProp === 'auto' && !TransitionComponent.muiSupportAuto) { | ||
| const TransitionSlotComponent = slots.transition ?? StepContentTransition; | ||
| if (transitionDurationProp === 'auto' && !TransitionSlotComponent.muiSupportAuto) { |
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StepContentTransition.muiSupportAuto will always be undefined in this check because it's checking a styled wrapper as opposed to the raw Collapse component like before
The Claude code suggested fix is to follow Popover and pass Collapse as the elementType param of useSlot:
material-ui/packages/mui-material/src/Popover/Popover.js
Lines 360 to 361 in 611e1ad
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Can you check again, I simplify it without removing the StepContentTransition styled component.
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Summary
Remove all deprecated props and classes from Step* components:
lineHorizontalandlineVerticalTransitionComponentandTransitionPropscomponentsProps,StepIconComponent, andStepIconPropsBreaking changes
StepConnector
lineHorizontalclass removed — combine.MuiStepConnector-horizontaland.MuiStepConnector-lineinsteadlineVerticalclass removed — combine.MuiStepConnector-verticaland.MuiStepConnector-lineinsteadStepContent
TransitionComponentprop removed — useslots.transitioninsteadTransitionPropsprop removed — useslotProps.transitioninsteadStepLabel
componentsPropsprop removed — useslotPropsinsteadStepIconComponentprop removed — useslots.stepIconinsteadStepIconPropsprop removed — useslotProps.stepIconinsteadCodemods available:
Relates to #47987