import { ValidatorFn } from '@angular/forms';
/**
 * Provides a set of validators used by form controls.
 *
 * A validator is a function that processes a {@link FormControl} or collection of
 * controls and returns a map of errors. A null map means that validation has passed.
 *
 * ### Example
 *
 * ```typescript
 * var loginControl = new FormControl("", Validators.equalsTo)
 * ```
 */
export declare class WoopaValidators {
    /**
     * Validator that compares the value of the given FormControls
     */
    static equalsTo(fieldPaths: string[]): ValidatorFn;
    /**
     * Validator that requires controls to maximun value.
     */
    static maxValue(max: number): ValidatorFn;
    /**
     * Validate value ocurrences on control value.
     *
     * @author Joaquin Volpe <joaquin.volpe@woopasoft.com>
     * @param count Value ocurrences
     * @param value Value to search
     * @returns
     * @memberof WoopaValidators
     */
    static almost(count: number, value: any): ValidatorFn;
    /**
     * Validate control value size. Only for arrays
     *
     * @author Joaquin Volpe <joaquin.volpe@woopasoft.com>
     * @param count Number of ocurrences to check
     * @param count Filters for list
     * @returns
     * @memberof WoopaValidators
     */
    static almostArray(count: number, filters?: any): ValidatorFn;
}