Refactor to use Angular's new output() function

Replaces EventEmitter and @Output() with the new output() function in chart, tree, and test components. This modernizes the codebase to align with recent Angular best practices and reduces boilerplate.

npm/ng-packs/packages/components/chart.js/src/chart.component.ts

@@ -4,14 +4,13 @@ import {
   ChangeDetectorRef, 
   Component, 
   ElementRef, 
-  EventEmitter, 
   Input, 
   OnChanges, 
   OnDestroy, 
-  Output, 
   SimpleChanges, 
   ViewChild, 
-  inject 
+  inject,
+  output,
 } from '@angular/core';
 
 let Chart: any;
@@ -53,9 +52,8 @@ export class ChartComponent implements AfterViewInit, OnDestroy, OnChanges {
 
   @Input() responsive = true;
 
-  @Output() dataSelect = new EventEmitter();
-
-  @Output() initialized = new EventEmitter<boolean>();
+  readonly dataSelect = output<any>();
+  readonly initialized = output<boolean>();
 
   @ViewChild('canvas') canvas!: ElementRef<HTMLCanvasElement>;
 

npm/ng-packs/packages/components/tree/src/lib/components/tree.component.ts

@@ -3,11 +3,10 @@ import {
   ChangeDetectorRef,
   Component,
   ContentChild,
-  EventEmitter,
   inject,
   Input,
   OnInit,
-  Output,
+  output,
   TemplateRef,
   ViewEncapsulation,
 } from '@angular/core';
@@ -63,11 +62,11 @@ export class TreeComponent implements OnInit {
   @ContentChild('menu') menu: TemplateRef<any>;
   @ContentChild(TreeNodeTemplateDirective) customNodeTemplate: TreeNodeTemplateDirective;
   @ContentChild(ExpandedIconTemplateDirective) expandedIconTemplate: ExpandedIconTemplateDirective;
-  @Output() readonly checkedKeysChange = new EventEmitter();
-  @Output() readonly expandedKeysChange = new EventEmitter<string[]>();
-  @Output() readonly selectedNodeChange = new EventEmitter();
-  @Output() readonly dropOver = new EventEmitter<DropEvent>();
-  @Output() readonly nzExpandChange = new EventEmitter<NzFormatEmitEvent>();
+  readonly checkedKeysChange = output<any>();
+  readonly expandedKeysChange = output<string[]>();
+  readonly selectedNodeChange = output<any>();
+  readonly dropOver = output<DropEvent>();
+  readonly nzExpandChange = output<NzFormatEmitEvent>();
   @Input() noAnimation = true;
   @Input() draggable: boolean;
   @Input() checkable: boolean;

npm/ng-packs/packages/core/src/lib/tests/replaceable-template.directive.spec.ts

@@ -1,4 +1,4 @@
-import { Component, EventEmitter, Input, Output, inject } from '@angular/core';
+import { Component, Input, inject, output } from '@angular/core';
 import { Router } from '@angular/router';
 import { createDirectiveFactory, SpectatorDirective } from '@ngneat/spectator/vitest';
 import { BehaviorSubject } from 'rxjs';
@@ -18,11 +18,9 @@ class DefaultComponent {
   @Input()
   twoWay: boolean;
 
-  @Output()
-  readonly twoWayChange = new EventEmitter<boolean>();
+  readonly twoWayChange = output<boolean>();
 
-  @Output()
-  readonly someOutput = new EventEmitter<string>();
+  readonly someOutput = output<string>();
 
   setTwoWay(value) {
     this.twoWay = value;