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0001 // perf-stats.component.ts
0002 import { Component, ChangeDetectionStrategy, Signal, inject } from '@angular/core';
0003 import { toSignal } from '@angular/core/rxjs-interop';
0004 import { DecimalPipe } from '@angular/common';
0005 import { PerfService, PerfLog } from '../../services/perf.service';
0006
0007 @Component({
0008 selector: 'app-perf-stats',
0009 templateUrl: './perf-stats.component.html',
0010 imports: [
0011 DecimalPipe
0012 ],
0013 changeDetection: ChangeDetectionStrategy.OnPush,
0014 styleUrls: ['./perf-stats.component.scss']
0015 })
0016 export class PerfStatsComponent {
0017 // toSignal keeps the template updating under zoneless: the perf$ stream is
0018 // produced inside the render loop, outside any Angular scheduling.
0019 perf: Signal<PerfLog> = toSignal(inject(PerfService).perf$, {
0020 initialValue: { fps: 0, frameTime: 0, calls: 0, triangles: 0, mode: 'continuous', idle: false },
0021 });
0022 }
