import { Constructor } from './Constructor';
import { EventEmitter } from './EventEmitter';
export declare const FieldWillValidateEvent = "FIELD_WILL_VALIDATE_EVENT";
export declare function withFieldWillValidateEventEmitter<TBase extends Constructor<{}>>(Base: TBase): {
    new (...args: any[]): {
        fieldWillValidateEventEmitter: EventEmitter<[string], void>;
        emitFieldWillValidateEvent(fieldName: string): void[];
        addFieldWillValidateEventListener(listener: (fieldName: string) => void): void;
        removeFieldWillValidateEventListener(listener: (fieldName: string) => void): void;
    };
} & TBase;