This would be a good occasion to add describeConformance on the charts components
It checks this kind of things

It checks this kind of things

👍 Same for things like lineChartClasses I suppose? This was what I was initially looking for. To target the root class.

I think that it also checks if the root class (lineChartClasses.root) is passed to the root DOM element yes.
But tbh I did not touch this for a long time.

About lineChartClasses it's a bit special because the root element is the chart container which is common to all components.

Kind of related to that issue: ResponsiveChartContainer has the <svg /> wrapped into a <div /> whereas the ChartContainer just renders the <svg />.

What I meant was that lineChartClasses (and responsiveChartContainerClasses ) is not exported from @mui/x-charts.

Passing the className to the root component should be straight forward. Having all the lineChartClasses, barChartClasses, ... might need more reflexion. Not sure it suit well with the charts set of components

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