export declare type VWO = {
    event: (event: string, properties: {
        [k: string]: unknown;
    } | undefined, vwoMeta: {
        [k: string]: unknown;
    } | undefined) => void;
    visitor: (attributes: {
        [k: string]: unknown;
    }, vwoMeta: {
        [k: string]: unknown;
    } | undefined) => void;
    push: (args: (string | {
        [k: string]: unknown;
    } | undefined)[]) => void;
};
