export declare class TypedFormData<T extends Record<string, string | File>> implements FormData {
    private formData;
    constructor(initElement?: HTMLFormElement | FormData);
    get<K extends keyof T>(key: Extract<K, string>): T[K];
    getAll(key: string): FormDataEntryValue[];
    /**
     * Executes a provided function once for each key/value pair in the FormData object.
     * @deprecated This method is deprecated and is not advised to be used. Use entries() or for...of loop instead.
     * @param callbackfn A function that is called for each key/value pair in the FormData object.
     * @param thisArg An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.
     */
    forEach(callbackfn: (value: FormDataEntryValue, key: string, parent: FormData) => void, thisArg?: unknown): void;
    getFormData(): FormData;
    getObject(): T;
    entries(): IterableIterator<[string, FormDataEntryValue]>;
    typedEntries(): IterableIterator<[keyof T, T[keyof T]]>;
    keys(): IterableIterator<string>;
    values(): IterableIterator<FormDataEntryValue>;
    set(key: keyof T, value: T[keyof T]): void;
    set(key: string, value: string): void;
    set(key: string, value: Blob): void;
    append(key: keyof T, value: T[keyof T]): void;
    append(key: string, value: string): void;
    append(key: string, value: Blob): void;
    has(key: string): boolean;
    delete(key: string): void;
    [Symbol.iterator](): IterableIterator<[string, FormDataEntryValue]>;
}