export declare const formDataToObject: <T extends Record<string | number, unknown>>(formData: FormData, win: typeof window) => T;
export declare const formDataToJsonString: (formData: FormData, win: typeof window) => string;
export declare const instanceToObject: <T extends Record<string | number, unknown>>(instance: FormData | URLSearchParams, win: typeof window) => T;
export declare const isUnsupported: (value: unknown) => value is undefined;
export declare const objectToFormData: <T extends Record<string, unknown>>(data: T, win: typeof window) => FormData;
export declare const objectToURLSearchParams: <T extends Record<string | number, unknown>>(data: T, win: typeof window) => URLSearchParams;
export declare const urlSearchParamsToObject: <T extends Record<string | number, unknown>>(urlSearchParams: URLSearchParams, win: typeof window) => T;
export declare const urlSearchParamsToJsonString: (urlSearchParams: URLSearchParams, win: typeof window) => string;