type Grouping<X = string, Y = string> = {
    type: X;
    skinTone: Y;
};
/**
 * Combines every reaction with every skin tone
 * @param x reactions
 * @param y skin tones
 * @returns array containing an object with the cartesian between the two objects (x, y)
 */
export declare const cartesian: <X, Y>(x: X[], y: Y[]) => Grouping<X, Y>[];
/**
 * Generates object with all combinations between reactions and skin tones and applies a
 * mapping function to the key and value of the final object.
 *
 * Final object for mapping function that
 * just appends the skin tone to the reaction type will look like:
 *
 * ```js
 * {
 *  "raise_hand_yellow": "raise_hand_yellow",
 *  "raise_hand_light": "raise_hand_light",
 *  "raise_hand_medium_light": "raise_hand_medium_light",
 *  "raise_hand_medium": "raise_hand_medium",
 *  "raise_hand_medium_dark": "raise_hand_dark",
 * ...
 * }
 * ```
 *
 * @param grouping array with all the combinations between reactions and skin tones
 * @param mapping mapping function
 * @returns object with keys and value that represent valid reactions
 */
export declare const generateReactionsWithSkinTone: (grouping: Grouping[], mapping: (key: Grouping) => string) => {
    [key: string]: string;
};
export {};