import { ComponentType } from 'react';

type ChartRenderer = "svg" | "canvas";
/** Inputs a spec compiler hands to a registered chart type's `fromSpec` mapper. */
type ChartSpecInput = {
    /** Panel `props`, after spec-level normalization. */
    props: Record<string, unknown>;
    /** Object-shaped panel data (e.g. `{ nodes, links }`); `{}` for row data. */
    data: Record<string, unknown>;
    /** Row-shaped panel data; `[]` for object data. */
    rows: Record<string, unknown>[];
};
type ChartTypeRegistration = {
    type: string;
    Chart: ComponentType<Record<string, unknown>>;
    defaultRenderer?: ChartRenderer;
    /**
     * Map a panel spec to `Chart` props. When omitted, spec compilers merge
     * object data, the first row, and panel props.
     */
    fromSpec?: (input: ChartSpecInput) => Record<string, unknown>;
};

declare function registerChartType(registration: ChartTypeRegistration): void;
declare function getChartType(type: string): ChartTypeRegistration | undefined;
declare function listChartTypes(): string[];
declare function clearChartTypes(): void;

declare function registerBuiltinChartTypes(): void;

export { type ChartRenderer, type ChartSpecInput, type ChartTypeRegistration, clearChartTypes, getChartType, listChartTypes, registerBuiltinChartTypes, registerChartType };