import { FormArrayState, FormControlState, FormGroupState } from '../interfaces/Form';
import { FormGroup } from '../models/FormGroup';
import { FormControl } from '../models/FormControl';
import { FormArray } from '../models/FormArray';
import { AbstractControl } from '../models/AbstractControl';
export declare class FormBuilder {
    /**
     * @description
     * Construct a new `FormGroup` instance.
     *
     * @param state A collection of child controls. The key for each child is the name
     * under which it is registered.
     *
     * @param options options options object for the `FormGroup`. The object can
     * have two shapes:
     *
     * 1) `AbstractControlOptions` object (preferred), which consists of:
     * * `types`: A synchronous validator function, or an array of validator functions
     * * `asyncValidators`: A single async validator or array of async validator functions
     * * `updateOn`: The event upon which the control should be updated (options: 'change' | 'blur' |
     * submit')
     *
     * 2) Legacy options object, which consists of:
     * * `validator`: A synchronous validator function, or an array of validator functions
     * * `asyncValidator`: A single async validator or array of async validator functions
     *
     */
    group: (state: FormGroupState) => FormGroup;
    /**
     * @description
     * Construct a new `FormControl` with the given state, types and options.
     *
     * @param state A collection of child controls. The key for each child is the name
     * under which it is registered.
     *
     * @param options options options object for the `FormGroup`. The object can
     * have two shapes:
     *
     *
     * @usageNotes
     *
     * ### Initialize a control as disabled
     *
     * The following example returns a control with an initial value in a disabled state.
     *
     * <code-example path="forms/ts/formBuilder/form_builder_example.ts"
     *   linenums="false" region="disabled-control">
     * </code-example>
     */
    control(state: FormControlState): FormControl;
    /**
     * Constructs a new `FormArray` from the given array of configurations,
     * types and options.
     *
     * @param controlsConfig An array of child controls or control configs. Each
     * child control is given an index when it is registered.
     *
     * @param validatorOrOpts A synchronous validator function, or an array of
     * such functions, or an `AbstractControlOptions` object that contains
     * validation functions and a validation trigger.
     *
     * @param asyncValidator A single async validator or array of async validator
     * functions.
     */
    array: (state: AbstractControl[] | FormControlState[]) => FormArray;
    /** @internal */
    _reduceControls(controlsConfig: FormGroupState | FormArrayState | FormControlState[]): FormGroupState | FormArrayState;
    /** @internal */
    _createControl(controlConfig: any): AbstractControl;
}