import { Logger } from 'ngx-base';
import { WorkItem } from '../models/work-item';
/**
 * This service provides a pre-processing of the type information attached to the WITs.
 * It is used by the dynamic form components to retrieve the type information and to
 * create the FormGroup.
 */
export declare class WorkItemTypeControlService {
    private log;
    private FIXED_PROPERTIES;
    constructor(log: Logger);
    /**
     * Validator for numbers only.
     */
    private numberValidator();
    /**
     * Validator for enums.
     */
    private enumValidator(validValues);
    toFormGroup(workItem: WorkItem): any;
    toAttributeArray(fields: any): any[];
}