import { Component, ChangeDetectionStrategy, Input } from '@angular/core'; import { animate, state, style, transition, trigger } from '@angular/animations'; type PaneType = 'left' | 'right'; @Component({ selector: 'app-slide-panel', changeDetection: ChangeDetectionStrategy.OnPush, templateUrl: './slide-panel.component.html', styleUrls: ['./slide-panel.component.scss'], animations: [ trigger('slide', [ state('left', style({ transform: 'translateX(0)' })), state('right', style({ transform: 'translateX(-50%)' })), transition('* => *', animate(300)) ]) ] }) export class SlidePanelComponent { @Input() activePane: PaneType = 'left'; }