import { type ErrorLike } from '../../utils/errors';
import type { FieldsMetaState } from './types';
import type { Validator, AsyncValidator } from './validation';
declare const FORM_ERROR: unique symbol;
type FormLevelValidationResult<FormFields> = Partial<{
    [P in keyof FormFields]: string;
} & {
    [FORM_ERROR]: ErrorLike;
}>;
export type SubmissionErrors<FormFields> = FormLevelValidationResult<FormFields> | undefined | void;
export type SubmissionResult<FormFields> = SubmissionErrors<FormFields> | Promise<SubmissionErrors<FormFields>>;
interface Validators<FieldValue, ErrorContext> {
    sync?: Validator<FieldValue, ErrorContext>;
    async?: AsyncValidator<FieldValue>;
}
interface FormStateConfig<FormFields> {
    values: FormFields;
    fields: Partial<{
        [P in keyof FormFields]: {
            validators: Validators<FormFields[P], any>;
        };
    }>;
    validate?: (values: FormFields) => FormLevelValidationResult<FormFields>;
    onSubmit?: (values: FormFields) => SubmissionResult<FormFields>;
}
/**
 * FormState is a part of form management system, it's supposed to be used
 * together with Form and FormField components.
 */
export declare class FormState<FormFields> {
    values: FormFields;
    metas: FieldsMetaState<FormFields>;
    submitted: boolean;
    submitting: boolean;
    submitError: ErrorLike | undefined;
    formRef: HTMLFormElement | null;
    config: FormStateConfig<FormFields>;
    validating: boolean;
    constructor(config: FormStateConfig<FormFields>);
    handleSubmit(event: Event): Promise<void>;
    private generateInitialFieldsState;
}
export {};