Removed withChartTheme HOC

deephaven#1572

packages/chart/src/index.ts

@@ -8,5 +8,5 @@ export { default as MockChartModel } from './MockChartModel';
 export { default as Plot } from './plotly/Plot';
 export * from './ChartTheme';
 export * from './ChartThemeProvider';
-export * from './ChartThemeProviderUtils';
 export { default as isFigureChartModel } from './isFigureChartModel';
+export * from './useChartTheme';

packages/chart/src/useChartTheme.tsx

@@ -0,0 +1,15 @@
+import { useContext } from 'react';
+
+import {
+  ChartThemeContext,
+  ChartThemeContextValue,
+} from './ChartThemeProvider';
+
+/**
+ * Hook to get the current `ChartThemeContextValue`.
+ */
+export function useChartTheme(): ChartThemeContextValue | null {
+  return useContext(ChartThemeContext);
+}
+
+export default useChartTheme;