import type { Sport } from "./types.ts";
/** A part of a surface that can be coloured on its own. */
export interface Feature {
    /** What a caller names it by: `blue-lines`. */
    name: string;
    /**
     * What its colour is given to: the custom properties the part is painted with (`--ky-red`), or a CSS property (`stroke`) for a part the stylesheet paints in a
     * colour that is not a property.
     */
    props: readonly string[];
    /** What it is, for the docs. */
    about: string;
}
/** The features of each sport, with what each colours. A sport whose surface has none named (one added since) is missing here. */
export declare const FEATURE_INFO: Readonly<Record<string, readonly Feature[]>>;
/**
 * The names of the features of each sport: the keys `featureColors` takes. Football's three fields have the same, and so have the five net sports.
 * @example
 * ```ts
 * import { FEATURES } from "@johnmorrisdotca/kyogijo-stadiums";
 * console.log(FEATURES.nhl.includes("blue-lines"), FEATURES.nfl.length);
 * // true 12
 * ```
 */
export declare const FEATURES: Readonly<Record<string, readonly string[]>>;
/** The features a drawing was asked to colour, as `[name, colour]`: a colour that is not safe is left out, and a name the sport does not have is an error that lists the names. */
export declare function featureColours(sport: Sport | string, given: Readonly<Record<string, string>> | undefined): [string, string][];
/** The rules for the features a drawing colours: its own stylesheet, for a drawing of one sport. */
export declare function featureStyle(sport: Sport | string, names: Iterable<string>): string;
/** The rules of every named feature: a colour in `--ky-f-<name>` on the drawing goes to the part. A drawing that colours a feature carries the rules it needs; a page that draws with `style: "none"` puts this in once. */
export declare const KYOGIJO_FEATURE_STYLE: string;