import {
    CLASS,
    isValue,
    isFunction,
    isString,
    isUndefined,
    isDefined,
    ceil10,
    asHalfPixel,
    diffDomain,
    isEmpty,
    notEmpty,
    getOption,
    hasValue,
    sanitise,
    getPathBox,
    ChartInternal
} from '../chartinternal.js';

const groups = function (groups) {
    let $$ = this.internal, config = $$.config;
    if (isUndefined(groups)) { return config.data_groups; }
    config.data_groups = groups;
    $$.redraw();
    return config.data_groups;
};

export { groups };