@bi8/am-dyn-form/app/modules/am-dyn-form/dyn-form-group.d.ts

ng update @angular/cli yarn add @angular/cli

import { FormGroup, AbstractControl } from "@angular/forms";
import { OperatorFunction, Observable } from "rxjs";
export interface FilterFn {
    (value: any): boolean;
}
export interface MapFn {
    (value: any): any;
}
export declare class DynFormGroup extends FormGroup {
    key: string;
    dir: string;
    config: any;
    constructor(options: {
        key?: string;
        dir?: string;
    }, controls: {
        [key: string]: AbstractControl;
    });
    addSlaveObserver(master: string, slave: string, options?: {
        apply?: boolean;
        disable?: boolean;
        reset?: boolean;
        ops?: OperatorFunction<any, any>[];
    }): Observable<any>;
}