export type Color = string | [number, number, number, number?];
export type Expr<T = unknown> = T | unknown[];
export type VStyleRule = {
    when?: Expr<boolean>;
    point?: {
        radius?: Expr<number>;
        fill?: Expr<Color>;
        stroke?: {
            color?: Expr<Color>;
            width?: Expr<number>;
        };
        icon?: {
            url: string;
            size?: number;
            anchor?: [number, number];
        };
    };
    line?: {
        color?: Expr<Color>;
        width?: Expr<number>;
        dasharray?: number[];
    };
    polygon?: {
        fill?: Expr<Color>;
        stroke?: {
            color?: Expr<Color>;
            width?: Expr<number>;
        };
    };
    label?: {
        text?: Expr<string>;
        color?: Expr<Color>;
        size?: Expr<number>;
        halo?: {
            color?: Expr<Color>;
            width?: Expr<number>;
        };
    };
};
export type VStyle = {
    rules: VStyleRule[];
    vars?: Record<string, Color | number | string>;
};
export declare const VSTYLE_DEFAULT: VStyle;