import { ControlValueAccessor, UntypedFormControl, ValidationErrors } from '@angular/forms';
export declare abstract class AbstractControlValueAccessor implements ControlValueAccessor {
    formCtrl: UntypedFormControl;
    _value: any;
    get value(): any;
    set value(v: any);
    writeValue(value: any): void;
    onChange: (_: any) => void;
    onTouched: () => void;
    registerOnChange(fn: (_: any) => void): void;
    registerOnTouched(fn: () => void): void;
    validate(): ValidationErrors | null;
}
export declare function ControlValueAccessorProvider(type: any): {
    provide: import("@angular/core").InjectionToken<readonly ControlValueAccessor[]>;
    useExisting: import("@angular/core").Type<any>;
    multi: boolean;
};
export declare function ControlValidatorProvider(type: any): {
    provide: import("@angular/core").InjectionToken<(Function | import("@angular/forms").Validator)[]>;
    useExisting: import("@angular/core").Type<any>;
    multi: boolean;
};