import { Pipe, PipeTransform } from '@angular/core'; import * as _ from 'lodash'; import { Tools } from './form.module'; @Pipe({ name: 'groupByFields' }) export class GroupByPipe implements PipeTransform { transform(fields: Tools.Field[]): Tools.Field[] { return _.filter(fields, f => Tools.checkGroup(f, fields) && f.Display); } }