/* * If not stated otherwise in this file or this component's LICENSE file the * following copyright and licenses apply: * * Copyright 2026 Comcast Cable Communications Management, LLC. * * Licensed under the Apache License, Version 2.0 (the License); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import { WebPlatform } from './WebPlatform.js'; /** * Next-generation Web Platform implementation that uses Fetch API * * @remarks * This platform uses the modern Fetch API instead of XMLHttpRequest for * loading image resources. The Fetch API provides a more modern, promise-based * interface for network requests and better streaming capabilities. * * Benefits over XMLHttpRequest: * - Promise-based (no callback-based API) * - Better error handling * - More consistent across browsers * - Better streaming support * - Service Worker compatible * * All other platform features remain the same as WebPlatform. */ export class WebPlatformNext extends WebPlatform { override async fetch(url: string): Promise { try { const response = await fetch(url); if (!response.ok) { throw new Error( `Failed to fetch resource: ${response.status} ${response.statusText}`, ); } return await response.blob(); } catch (error) { const errorMessage = error instanceof Error ? error.message : 'Unknown fetch error'; throw new Error(`Fetch failed for ${url}: ${errorMessage}`); } } }