import type { Payload } from '@xyo-network/sdk';
import { AbstractControl } from './control/index.js';
import type { ErrorSummary } from './InputError.js';
import type { FormGroupStorage } from './storage/index.js';
/** Payload that may include a `timestamp` used for storage TTL checks. */
export type PayloadWithTimestamp = Payload<{
    timestamp?: number;
}>;
/** String-key subset of `keyof T`, or `never` when keys are not strings. */
export type KeyOfString<T> = keyof T extends string ? keyof T : never;
type FormGroupErrors<TValue> = Record<KeyOfString<TValue>, string>;
/** Construction options for {@link FormGroup}, including optional persistence. */
export interface FormGroupParams<TStorageValue extends Payload = Payload> {
    serialize?: boolean;
    storage?: {
        sensitive?: FormGroupStorage<TStorageValue>;
        storage?: FormGroupStorage<TStorageValue>;
    };
    ttlStorage?: number;
}
/**
 * Organize form controls in a group.
 *
 * NOTE: This is a work in progress and only supports top level controls.  Nested controls are not supported.
 */
export declare class FormGroup<TValue extends PayloadWithTimestamp = PayloadWithTimestamp, TStorageValue extends PayloadWithTimestamp = PayloadWithTimestamp> extends AbstractControl {
    private _controls;
    private fgParams?;
    private serializeListeners;
    private serializedSensitiveState;
    private serializedState;
    constructor(fgParams?: FormGroupParams<TStorageValue>);
    get errorSummary(): ErrorSummary;
    get errors(): FormGroupErrors<TValue>;
    get nonSensitiveStorage(): FormGroupStorage<TStorageValue> | undefined;
    get sensitiveStorage(): FormGroupStorage<TStorageValue> | undefined;
    get touched(): boolean;
    get valid(): boolean;
    get values(): TValue;
    getControl(name: string): Record<KeyOfString<TValue>, AbstractControl<import('./index.js').ValidControlValue>>[KeyOfString<TValue>];
    getSerializedValue(name: string, sensitive?: boolean): Promise<string | undefined>;
    registerControl(name: string, control: AbstractControl): void;
    resetControls(): void;
    resetValues(): void;
    unregisterControl(name: string): void;
    validateFields(requiredFields?: string[]): void;
    private serializeControlValue;
    private serializeValues;
    private setStateValueFromStorage;
}
export {};
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