export declare function addOrUpdateSearchParam(params: {
    url: string;
    name: string;
    value: string;
    encodeMethod: "encodeURIComponent" | "www-form";
}): string;
export declare function getSearchParam(params: {
    url: string;
    name: string;
}): {
    wasPresent: true;
    value: string;
    url_withoutTheParam: string;
} | {
    wasPresent: false;
    value?: never;
    url_withoutTheParam?: never;
};
export declare function getAllSearchParams(url: string): Record<string, string>;