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Angular - commonly needed directives and services
There is a newer version: 18.2.12
/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.dev/license
 */
import { InjectionToken } from '@angular/core';
/**
 * In SSR scenarios, a preload `` element is generated for priority images.
 * Having a large number of preload tags may negatively affect the performance,
 * so we warn developers (by throwing an error) if the number of preloaded images
 * is above a certain threshold. This const specifies this threshold.
 */
export const DEFAULT_PRELOADED_IMAGES_LIMIT = 5;
/**
 * Helps to keep track of priority images that already have a corresponding
 * preload tag (to avoid generating multiple preload tags with the same URL).
 *
 * This Set tracks the original src passed into the `ngSrc` input not the src after it has been
 * run through the specified `IMAGE_LOADER`.
 */
export const PRELOADED_IMAGES = new InjectionToken('NG_OPTIMIZED_PRELOADED_IMAGES', {
    providedIn: 'root',
    factory: () => new Set(),
});
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