@babylonjs/core/Misc/webRequest.fetch.js

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import { WebRequest } from "./webRequest.js";
/**
 * Fetches a resource from the network
 * @param url defines the url to fetch the resource from
 * @param options defines the options to use when fetching the resource
 * @returns a promise that resolves when the resource is fetched
 * @internal
 */
export async function _FetchAsync(url, options) {
    const method = options.method || "GET";
    return await new Promise((resolve, reject) => {
        const request = new WebRequest();
        request.addEventListener("readystatechange", () => {
            if (request.readyState == 4) {
                if (request.status == 200) {
                    const headerValues = {};
                    if (options.responseHeaders) {
                        for (const header of options.responseHeaders) {
                            headerValues[header] = request.getResponseHeader(header) || "";
                        }
                    }
                    resolve({ response: request.response, headerValues: headerValues });
                }
                else {
                    // eslint-disable-next-line @typescript-eslint/prefer-promise-reject-errors
                    reject(`Unable to fetch data from ${url}. Error code: ${request.status}`);
                }
            }
        });
        request.open(method, url);
        request.send();
    });
}
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