import type { TemplateRef } from '@angular/core';
import type { AbstractControl, AbstractControlDirective, ValidationErrors } from '@angular/forms';
import type { MatFormFieldControl } from '@angular/material/form-field';
export type ErrorTemplate = {
    template: TemplateRef<any>;
    $implicit: ValidationErrors;
} | {
    template: undefined;
    $implicit: string;
} | undefined;
export type FormFieldControl = Pick<MatFormFieldControl<any>, 'ngControl'>;
export type NgxMatErrorControls = FormFieldControl | AbstractControl | AbstractControlDirective | (FormFieldControl | AbstractControl | AbstractControlDirective)[] | undefined | null | '';
export type ErrorTransform = (error: any) => string;
export interface ErrorMessages {
    [key: string]: string | ErrorTransform;
}
/**
 * For errors: 'min', 'matDatepickerMin'
 */
export interface MinError<T = number> {
    min: T;
    actual: T;
}
/**
 * For errors: 'max', 'matDatepickerMax'
 */
export interface MaxError<T = number> {
    max: T;
    actual: T;
}
/**
 * For errors: 'minlength', 'maxlength'
 */
export interface LengthError {
    requiredLength: number;
    actualLength: number;
}
/**
 * For errors: 'pattern'
 */
export interface PatternValidator {
    requiredPattern: string;
    actualValue: string;
}
/**
 * For errors: 'matStartDateInvalid'
 */
export interface StartDateError<D> {
    end: D;
    actual: D;
}
/**
 * For errors: 'matEndDateInvalid'
 */
export interface EndDateError<D> {
    start: D;
    actual: D;
}
/**
 * For errors: 'matDatepickerParse', 'matTimepickerParse'
 */
export interface ParseError {
    text: string;
}
/**
 * @deprecated to be removed in version 20. Please use ParseError instead
 */
export type DatepickerParseError = ParseError;