Type Re-exports

All KlineCharts types are re-exported for convenience, plus the wrapper’s own helper types. Import everything from react-klinecharts:

import type {
  Chart,
  KLineData,
  Styles,
  Options,
  Indicator,
  IndicatorCreate,
  Overlay,
  OverlayCreate,
  Crosshair,
  ActionType,
  ActionCallback,
  DataLoader,
  SymbolInfo,
  Period,
  // wrapper-specific
  ActionPayloadMap,
  TypedActionCallback,
  // ...all KlineCharts types
} from "react-klinecharts";

Wrapper-specific types

Type	Description
KLineChartProps	Props of <KLineChart>.
UseIndicatorOptions	Options for useIndicator / <KLineChart.Indicator>.
UseOverlayOptions	Options for useOverlay / <KLineChart.Overlay>.
UseYAxisOptions	Options for useYAxis / <KLineChart.YAxis>.
IndicatorProps / OverlayProps / YAxisProps / WidgetProps	Sub-component prop aliases.
ActionPayloadMap	Maps each ActionType to its payload type.
TypedActionCallback<T extends ActionType>	Strongly-typed callback for a chart action.

ActionPayloadMap

interface ActionPayloadMap {
  onZoom: { scale: number };
  onScroll: { distance: number };
  onVisibleRangeChange: VisibleRange;
  onCrosshairChange: Crosshair;
  onCandleBarClick: KLineData;
  onPaneDrag: { paneId: string };
  onCandleTooltipFeatureClick: unknown;
  onIndicatorTooltipFeatureClick: unknown;
  onCrosshairFeatureClick: unknown;
}

This is what makes the event callbacks and useChartEvent strongly typed.

Context type

interface KLineChartContextValue {
  chart: Chart | null;
}

Exposed via KLineChartContext and consumed by useKLineChart.