07-migration-from-1x.md

Migration from 1.x

This page summarizes migration to 2.0.0.

Breaking change summary

• Legacy chart view types are replaced by composable chart primitives.
• Legacy mutating method chains are replaced by modifier APIs.
• Interaction no longer requires @EnvironmentObject.

Replace these first

1.x	2.x
LineChartView	LineChart
BarChartView	BarChart
PieChartView	PieChart
MultiLineChartView	multiple LineChart layers

Replace common method chains

1.x	2.x
.data(...)	.chartData(...)
.rangeX(...)	.chartXRange(...)
.rangeY(...)	.chartYRange(...)
.setAxisXLabels(...)	.chartXAxisLabels(...)
.setNumberOfHorizontalLines(...)	.chartGridLines(...)
.showChartMarks(...)	.chartLineMarks(...)

Interaction migration

Pick one:

1. shared state:
   • .chartInteractionValue(ChartValue())
2. callback style:
   • .chartSelectionHandler { event in ... }

Full mapping

See MIGRATION.md for complete type + method mapping.