import { Config as VgConfig, Renderers } from 'vega';
import { Config as VlConfig } from 'vega-lite';
export type Mode = 'vega' | 'vega-lite';
export type Config = VlConfig | VgConfig;
export type ExpressionFunction = Record<string, any | {
    fn: any;
    visitor?: any;
}>;
export interface MessageData {
    spec: string;
    file?: unknown;
    config?: Config;
    mode: Mode;
    renderer?: Renderers;
}
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