import { ColorCube } from './cubes';
export * from './main';
export declare const RYB = "ryb";
export declare const RYBHSL = "rybhsl";
export declare const ryb: (cube?: ColorCube) => {
    mode: string;
    cube: ColorCube | undefined;
};
export declare const rybhsl: (cube?: ColorCube) => {
    mode: string;
    cube: ColorCube | undefined;
};
/**
 * Minimal shape of the p5 constructor we depend on. @types/p5 describes the
 * runtime instance, not the prototype-patching surface we use here, so this
 * narrow interface is clearer than trying to reuse the upstream types.
 */
interface P5Constructor {
    prototype: P5Prototype;
}
interface P5Prototype {
    colorMode: (...args: unknown[]) => unknown;
    fill: (...args: unknown[]) => unknown;
    stroke: (...args: unknown[]) => unknown;
    background: (...args: unknown[]) => unknown;
    color: (...args: unknown[]) => unknown;
    registerMethod: (hook: string, fn: (this: P5Instance) => void) => void;
    _rybExtended?: boolean;
    RYB?: string;
    RYBHSL?: string;
    ryb?: typeof ryb;
    rybhsl?: typeof rybhsl;
}
/**
 * Bookkeeping fields we attach to individual p5 instances. These are internal
 * to this extension — never part of the public p5 API.
 */
interface P5Instance {
    constructor: P5Constructor;
    _rybMode?: string | false | any;
    _rybMaxes?: [number, number, number, number];
    _rybCube?: ColorCube;
}
/**
 * Extends p5.js with RYB color mode support.
 * Called automatically on library load. Can be invoked manually:
 *   rybitten.extendP5(p5)
 */
export declare function extendP5(p5: P5Constructor): void;