fixed previous fix

lib/fetch/content/fetch.js

@@ -41,7 +41,9 @@ this.superFetch = this.superFetch || (() => {
 	superFetch.hostFetch = async url => {
 		const xhrPromise = new Promise((resolve, reject) => {
 			const xhrRequest = new XMLHttpRequest();
-			let resolveResponse, rejectResponse;
+			let receivedResponse, receivedError;
+			let resolveResponse = response => receivedResponse = response;
+			let rejectResponse = error => receivedError = error;
 			xhrRequest.withCredentials = true;
 			xhrRequest.responseType = "arraybuffer";
 			xhrRequest.onerror = event => reject(new Error(event.details));
@@ -49,16 +51,26 @@ this.superFetch = this.superFetch || (() => {
 				if (xhrRequest.readyState == XMLHttpRequest.HEADERS_RECEIVED) {
 					const headers = new Map();
 					headers.set("content-type", xhrRequest.getResponseHeader("Content-Type"));
-					resolve({ headers, status: xhrRequest.status, arrayBuffer: () => new Promise((resolve, reject) => [resolveResponse, rejectResponse] = [resolve, reject]) });
+					resolve({
+						headers, status: xhrRequest.status, arrayBuffer: () => new Promise((resolve, reject) => {
+							if (receivedError) {
+								reject(receivedError);
+							} else if (receivedResponse) {
+								resolve(receivedResponse);
+							} else {
+								[resolveResponse, rejectResponse] = [resolve, reject];
+							}
+						})
+					});
 				}
 				if (xhrRequest.readyState == XMLHttpRequest.DONE) {
-					setTimeout(() => resolveResponse(xhrRequest.response), 1);
+					resolveResponse(xhrRequest.response);
 				}
 			};
 			xhrRequest.onerror = error => {
 				reject(error);
 				if (rejectResponse) {
-					setTimeout(() => rejectResponse(error), 1);
+					rejectResponse(error);
 				}
 			};
 			xhrRequest.open("GET", url, true);