@ArcGIS/charts-components@5.0.18
The TypeScript type mapping for `ModelOfType<T>` excludes heat charts by mapping `ModelTypes.HeatChart` to `never`.
Because `createModel` returns `Promise<ModelOfType<T>>`, this causes incorrect typing for heat chart creation even though heat charts are supported and created at runtime.
import { createModel, ModelTypes } from "@arcgis/charts-components";
import FeatureLayer from "@arcgis/core/layers/FeatureLayer";
const layer = new FeatureLayer({ url: "..." });
const model = await createModel({
chartType: ModelTypes.HeatChart,
layer
});
// Expected: model inferred as BarChartModel | LineChartModel | ComboBarLineChartModel | BoxPlotModel | PieChartModel | ScatterplotModel | HistogramModel | GaugeModel | RadarChartModel | HeatChartModel
// Actual: model inferred as BarChartModel | LineChartModel | ComboBarLineChartModel | BoxPlotModel | PieChartModel | ScatterplotModel | HistogramModel | GaugeModel | RadarChartModel
Impact
- Incorrect IntelliSense and type narrowing for heat chart workflows.
- Forces consumer-side assertions/workarounds for otherwise valid API usage.
