client/src/channels/publish.js

@@ -22,7 +22,7 @@ export const makePublishRequestChannel = (fd, isUpdate) => {
     xhr.upload.addEventListener('load', onLoad);
     // set state change handler
     xhr.onreadystatechange = () => {
-      if (xhr.readyState === 4) {
+      if (xhr.readyState === XMLHttpRequest.DONE) {
         switch (xhr.status) {
           case 413:
             emitter({error: new Error("Unfortunately it appears this web server " +