export type { Spec as VegaSpec, View } from 'vega';
export type { VisualizationSpec, EmbedOptions } from 'vega-embed';
export type { TopLevelSpec as VegaLiteSpec } from 'vega-lite';
export type SignalListener = (name: string, value: unknown) => void;
export type SignalListeners = {
    [key: string]: SignalListener;
};