import { AsyncValidatorFn, ValidatorFn } from './directives/validators';
import { FormArray, FormControl, FormGroup } from './model';
/**
 * @whatItDoes Creates an {@link AbstractControl} from a user-specified configuration.
 *
 * It is essentially syntactic sugar that shortens the `new FormGroup()`,
 * `new FormControl()`, and `new FormArray()` boilerplate that can build up in larger
 * forms.
 *
 * @howToUse
 *
 * To use, inject `FormBuilder` into your component class. You can then call its methods
 * directly.
 *
 * {@example forms/ts/formBuilder/form_builder_example.ts region='Component'}
 *
 *  * **npm package**: `@angular/forms`
 *
 *  * **NgModule**: {@link ReactiveFormsModule}
 *
 * @stable
 */
export declare class FormBuilder {
    /**
     * Construct a new {@link FormGroup} with the given map of configuration.
     * Valid keys for the `extra` parameter map are `validator` and `asyncValidator`.
     *
     * See the {@link FormGroup} constructor for more details.
     */
    group(controlsConfig: {
        [key: string]: any;
    }, extra?: {
        [key: string]: any;
    } | null): FormGroup;
    /**
     * Construct a new {@link FormControl} with the given `formState`,`validator`, and
     * `asyncValidator`.
     *
     * `formState` can either be a standalone value for the form control or an object
     * that contains both a value and a disabled status.
     *
     */
    control(formState: Object, validator?: ValidatorFn | ValidatorFn[] | null, asyncValidator?: AsyncValidatorFn | AsyncValidatorFn[] | null): FormControl;
    /**
     * Construct a {@link FormArray} from the given `controlsConfig` array of
     * configuration, with the given optional `validator` and `asyncValidator`.
     */
    array(controlsConfig: any[], validator?: ValidatorFn | null, asyncValidator?: AsyncValidatorFn | null): FormArray;
}