export type Color = (typeof colors)[number];
export type Role = (typeof roles)[number];
export type File = (typeof files)[number];
export type Rank = (typeof ranks)[number];
export type Key = "a0" | `${File}${Rank}`;
export type FEN = string;
export type Pos = [number, number];
export interface Piece {
    role: Role;
    color: Color;
    promoted?: boolean;
}
export interface Drop {
    role: Role;
    key: Key;
}
export type Pieces = Map<Key, Piece>;
export type PiecesDiff = Map<Key, Piece | undefined>;
export type KeyPair = [Key, Key];
export type NumberPair = [number, number];
export type NumberQuad = [number, number, number, number];
export interface Rect {
    left: number;
    top: number;
    width: number;
    height: number;
}
export type Dests = Map<Key, Key[]>;
export interface Elements {
    board: HTMLElement;
    wrap: HTMLElement;
    container: HTMLElement;
    ghost?: HTMLElement;
    svg?: SVGElement;
    customSvg?: SVGElement;
    autoPieces?: HTMLElement;
}
export interface Dom {
    elements: Elements;
    bounds: Memo<DOMRectReadOnly>;
    redraw: () => void;
    redrawNow: (skipSvg?: boolean) => void;
    unbind?: Unbind;
    destroyed?: boolean;
}
export interface Exploding {
    stage: number;
    keys: readonly Key[];
}
export interface MoveMetadata {
    premove: boolean;
    ctrlKey?: boolean;
    holdTime?: number;
    captured?: Piece;
    predrop?: boolean;
}
export interface SetPremoveMetadata {
    ctrlKey?: boolean;
}
export type MouchEvent = Event & Partial<MouseEvent & TouchEvent>;
export interface KeyedNode extends HTMLElement {
    cgKey: Key;
}
export interface PieceNode extends KeyedNode {
    tagName: "PIECE";
    cgPiece: string;
    cgAnimating?: boolean;
    cgFading?: boolean;
    cgDragging?: boolean;
    cgScale?: number;
}
export interface SquareNode extends KeyedNode {
    tagName: "SQUARE";
}
export interface Memo<A> {
    (): A;
    clear: () => void;
}
export interface Timer {
    start: () => void;
    cancel: () => void;
    stop: () => number;
}
export type Redraw = () => void;
export type Unbind = () => void;
export type Milliseconds = number;
export type KHz = number;
export declare const colors: readonly ["white", "black"];
export declare const roles: readonly ["pawn", "king", "advisor", "rook", "bishop", "knight", "cannon"];
export declare const files: readonly ["a", "b", "c", "d", "e", "f", "g", "h", "i"];
export declare const ranks: readonly ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"];
export type RanksPosition = "left" | "right";
export type BrushColor = "green" | "red" | "blue" | "yellow";
export type SquareClasses = Map<Key, string>;