import type { ChemicalElement, ElementSymbol } from '../element';
import type { Snippet } from 'svelte';
export declare const make_color_override_key: (x_key: string, y_key: string) => string;
export type AxisItem<T = Record<string, unknown>> = {
    label: string;
    key?: string;
    sort_value?: number;
    category?: string;
    data?: T;
};
export declare const axis_key: (item: AxisItem) => string;
export type CellValue = number | string | null;
export type HeatmapValues = CellValue[][] | Record<string, Record<string, CellValue>>;
export declare const cell_value_getter: (values: HeatmapValues, x_items: AxisItem[], y_items: AxisItem[]) => ((x_idx: number, y_idx: number) => CellValue);
export type CellContext = {
    x_item: AxisItem;
    y_item: AxisItem;
    x_idx: number;
    y_idx: number;
    value: CellValue;
    bg_color: string | null;
};
export interface MissingCellStyle {
    color?: `element-category` | (string & {});
    label?: string;
    style?: string;
}
export declare const ORDERING_LABELS: {
    readonly atomic_number: "Atomic Number";
    readonly mendeleev_number: "Pettifor Chemical Similarity";
    readonly alphabetical: "Alphabetical";
    readonly atomic_mass: "Atomic Mass";
    readonly electronegativity: "Pauling Electronegativity";
    readonly first_ionization: "Ionization Energy";
    readonly melting_point: "Melting Point";
    readonly atomic_radius: "Atomic Radius";
    readonly density: "Density";
    readonly n_valence: "Valence Electrons";
};
export type ElementAxisOrderingKey = keyof typeof ORDERING_LABELS;
type ElementAxisOrdering = ElementAxisOrderingKey | ((a: ChemicalElement, b: ChemicalElement) => number);
export type HeatmapNormalizeMode = `linear` | `log`;
export type HeatmapDomainMode = `auto` | `robust` | `fixed`;
export type ColorBarPosition = `right` | `bottom`;
export type SymmetricMode = false | `lower` | `upper`;
export type HeatmapTooltipProp = Snippet<[CellContext]> | boolean;
export type HeatmapExportFormat = `csv` | `json`;
export declare const ELEMENT_ORDERINGS: ElementAxisOrderingKey[];
export declare function matrix_to_rows(x_items: AxisItem[], y_items: AxisItem[], values: HeatmapValues): Record<string, CellValue>[];
export declare function elements_to_axis(symbols?: ElementSymbol[], ordering?: ElementAxisOrdering): AxisItem<ChemicalElement>[];
export { default as HeatmapMatrix } from './HeatmapMatrix.svelte';
export { default as HeatmapMatrixControls } from './HeatmapMatrixControls.svelte';