From 2ebce8eb7b22fec3ccd7bd45abf999883294acc7 Mon Sep 17 00:00:00 2001
From: Bruno Windels <brunow@matrix.org>
Date: Tue, 27 Oct 2020 13:49:36 +0100
Subject: [PATCH] set responseType after calling open

---
 src/platform/web/dom/request/xhr.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/platform/web/dom/request/xhr.js b/src/platform/web/dom/request/xhr.js
index e397c336..ab5ac9f5 100644
--- a/src/platform/web/dom/request/xhr.js
+++ b/src/platform/web/dom/request/xhr.js
@@ -37,10 +37,11 @@ class RequestResult {
 
 function send(url, {method, headers, timeout, body, format}) {
     const xhr = new XMLHttpRequest();
+    xhr.open(method, url);
     if (format === "buffer") {
+        // important to call this after calling open
         xhr.responseType = "arraybuffer";
     }
-    xhr.open(method, url);
     if (headers) {
         for(const [name, value] of headers.entries()) {
             xhr.setRequestHeader(name, value);