happy-dom/lib/fetch/ResourceFetch.js

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.

import URL from '../url/URL.js';
import Fetch from './Fetch.js';
import SyncFetch from './SyncFetch.js';
import WindowBrowserContext from '../window/WindowBrowserContext.js';
import PreloadUtility from './preload/PreloadUtility.js';
import * as PropertySymbol from '../PropertySymbol.js';
/**
 * Helper class for performing fetch of resources.
 */
export default class ResourceFetch {
    window;
    /**
     * Constructor.
     *
     * @param window Window.
     */
    constructor(window) {
        this.window = window;
    }
    /**
     * Returns resource data asynchronously.
     *
     * @param url URL.
     * @param destination Destination.
     * @param [options]
     * @param [options.credentials] Credentials.
     * @param options.referrerPolicy
     * @returns Response.
     */
    async fetch(url, destination, options) {
        const browserFrame = new WindowBrowserContext(this.window).getBrowserFrame();
        // Preloaded resource
        if (destination === 'script' || destination === 'style') {
            const preloadKey = PreloadUtility.getKey({
                url: String(url),
                destination,
                mode: 'cors',
                credentialsMode: options.credentials || 'same-origin'
            });
            const preloadEntry = this.window.document[PropertySymbol.preloads].get(preloadKey);
            if (preloadEntry) {
                this.window.document[PropertySymbol.preloads].delete(preloadKey);
                const response = preloadEntry.response || (await preloadEntry.onResponseAvailable());
                if (!response.ok) {
                    throw new this.window.DOMException(`Failed to perform request to "${new URL(url, this.window.location.href).href}". Status ${preloadEntry.response.status} ${preloadEntry.response.statusText}.`);
                }
                return preloadEntry.response[PropertySymbol.buffer].toString();
            }
        }
        const fetch = new Fetch({
            browserFrame,
            window: this.window,
            url,
            disableSameOriginPolicy: destination === 'script' || destination === 'style',
            disablePreload: true,
            init: {
                credentials: options?.credentials,
                referrerPolicy: options?.referrerPolicy
            }
        });
        const response = await fetch.send();
        if (!response.ok) {
            throw new this.window.DOMException(`Failed to perform request to "${new URL(url, this.window.location.href).href}". Status ${response.status} ${response.statusText}.`);
        }
        return await response.text();
    }
    /**
     * Returns resource data synchronously.
     *
     * @param url URL.
     * @param destination Destination.
     * @param [options] Options.
     * @param [options.credentials] Credentials.
     * @param [options.referrerPolicy] Referrer policy.
     * @returns Response.
     */
    fetchSync(url, destination, options) {
        const browserFrame = new WindowBrowserContext(this.window).getBrowserFrame();
        // Preloaded resource
        if (destination === 'script' || destination === 'style') {
            const preloadKey = PreloadUtility.getKey({
                url: String(url),
                destination,
                mode: 'cors',
                credentialsMode: options.credentials || 'same-origin'
            });
            const preloadEntry = this.window.document[PropertySymbol.preloads].get(preloadKey);
            // We will only use this if the fetch for the resource is complete as it is async and this request is sync.
            if (preloadEntry && preloadEntry.response) {
                this.window.document[PropertySymbol.preloads].delete(preloadKey);
                const response = preloadEntry.response;
                if (!response.ok) {
                    throw new this.window.DOMException(`Failed to perform request to "${new URL(url, this.window.location.href).href}". Status ${preloadEntry.response.status} ${preloadEntry.response.statusText}.`);
                }
                return preloadEntry.response[PropertySymbol.buffer].toString();
            }
        }
        const fetch = new SyncFetch({
            browserFrame,
            window: this.window,
            url,
            disableSameOriginPolicy: true,
            init: {
                credentials: options?.credentials,
                referrerPolicy: options?.referrerPolicy
            }
        });
        const response = fetch.send();
        if (!response.ok) {
            throw new this.window.DOMException(`Failed to perform request to "${new URL(url, this.window.location.href).href}". Status ${response.status} ${response.statusText}.`);
        }
        return response.body.toString();
    }
}
//# sourceMappingURL=ResourceFetch.js.map