export declare const queryStrings: {
    /**
     * parse: convenience wrapper to parse URLSearchParams into an Object
     * @param qs - search string, like location.search
     */
    parse<T extends Record<string, any>>(qs?: string): T;
    /**
     * create: create a URLSearchParam string from Object
     * @param obj - the object
     * @param options - upsert: update an existing search string; includeQuestionMark: if truthy prepend with '?'
     */
    create(obj: any, { upsert, upsertFrom, includeQuestionMark }: {
        upsert?: boolean | undefined;
        upsertFrom?: string | undefined;
        includeQuestionMark?: boolean | undefined;
    }): string;
};