/**
 * The part of a Chart.js config a form can sensibly show: what kind of chart, the category
 * labels, and the series. Everything else — `options`, plugin config, per-dataset styling —
 * is left untouched, which is what lets the form and the JSON editor edit the same beat
 * without one erasing the other.
 */
export type ChartSeries = {
    label: string;
    data: number[];
};
export type ChartForm = {
    type: string;
    labels: string[];
    datasets: ChartSeries[];
};
/** Chart types the form offers. Anything else stays reachable through the JSON editor. */
export declare const CHART_TYPES: readonly ["bar", "line", "pie", "doughnut", "radar", "polarArea", "scatter", "bubble"];
export declare const readChartForm: (chartData: unknown) => ChartForm;
/**
 * The form's values written back over the existing config.
 *
 * Everything the form does not know about is carried through: sibling keys of `type` and
 * `data`, sibling keys inside `data`, and every property of a dataset other than `label` and
 * `data`. A dataset the form added has no counterpart to preserve, so it is written as-is.
 */
export declare const writeChartForm: (chartData: unknown, form: ChartForm) => Record<string, unknown>;
/** One line per value, which is how a column of numbers reads and how it is typed. */
export declare const parseNumbers: (text: string) => number[];