export interface CardDataCoreOptions {
    onSubmit: Function;
}
export interface Field {
    name: string;
    value?: any;
    type?: string;
    label?: string;
    required?: boolean;
    secret?: boolean;
    maxLength?: number;
}
export interface ErrorField {
    name: string;
    message: string;
}
export interface CardDataState {
    values: {
        [key: string]: any;
    };
    valid: boolean;
    loading: boolean;
    submitting: boolean;
    success: boolean;
    failed: boolean;
    message?: any;
    pending?: any;
    errors?: ErrorField[];
    fields: Field[];
}
export declare const initialCardDataState: {
    values: {};
    valid: boolean;
    loading: boolean;
    linking: boolean;
    success: boolean;
    failed: boolean;
    submitting: boolean;
    fields: never[];
};
export default class CardDataCore {
    state: CardDataState;
    fields: Field[];
    displayGrid: any[];
    private onSubmit;
    private subscriber;
    constructor({ onSubmit, }: CardDataCoreOptions);
    change(name: string, value: any): void;
    submit(): Promise<void>;
    uniqueBy(arr: any, prop: string): any;
    subscribe(func: Function): void;
    private updateState;
    private notifyForm;
}