import { AbstractControlOptions, AsyncValidatorFn, UntypedFormControl, ValidationErrors, ValidatorFn } from '@angular/forms';
import { EventEmitter } from '@angular/core';
export declare class CommonFormControl extends UntypedFormControl {
    readonly warnings: ValidationErrors | null;
    private _rawWarningValidator;
    private _composedWarningValidatorFn;
    warningChanges: EventEmitter<ValidationErrors>;
    get warningValidator(): ValidatorFn | null;
    set warningValidator(validatorFn: ValidatorFn | null);
    constructor(formState?: any, validatorOrOpts?: ValidatorFn | ValidatorFn[] | AbstractControlOptions | null, warningValidator?: ValidatorFn | ValidatorFn[] | null, asyncValidator?: AsyncValidatorFn | AsyncValidatorFn[] | null);
    updateValueAndValidity(opts?: {
        onlySelf?: boolean;
        emitEvent?: boolean;
    }): void;
    setWarningValidators(validators: ValidatorFn | ValidatorFn[] | null): void;
    private _runWarningValidator;
}