From b68ff380282e9fbcd9fcbb07d803660368ed92cd Mon Sep 17 00:00:00 2001
From: Xmader <xmader@outlook.com>
Date: Mon, 10 May 2021 10:55:24 -0400
Subject: [PATCH] fix: mp3 & midi download

The result differed as connection speed differs.

race condition: this script code and `webpackChunkmusescore_es6` chunks
---
 src/wrapper.js | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/src/wrapper.js b/src/wrapper.js
index 7bb34d7..10ed72b 100644
--- a/src/wrapper.js
+++ b/src/wrapper.js
@@ -30,10 +30,11 @@ function getRandL () {
 
 // script loader
 new Promise(resolve => {
-  const id = '' + Math.random();
-  w[id] = resolve;
-
-  const stackN = 9
+  const d = new Image()
+  document.body.prepend(d)
+  resolve(d)
+}).then(d => {
+  const stackN = 10
   let loaderIntro = ''
   for (let i = 0; i < stackN; i++) {
     loaderIntro += `(function ${getRandL()}(){`
@@ -41,12 +42,10 @@ new Promise(resolve => {
   const loaderOutro = '})()'.repeat(stackN)
   const mockUrl = "https://c.amazon-adsystem.com/aax2/apstag.js"
 
-  setTimeout(`${loaderIntro}const d=new Image();window['${id}'](d);delete window['${id}'];document.body.prepend(d)${loaderOutro}//# sourceURL=${mockUrl}`)
-}).then(d => {
   d.style.display = 'none';
   d.src = 'data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==';
   d.once = false;
-  d.setAttribute('onload', `if(this.once)return;this.once=true;this.remove();const GM=window['${gmId}'];delete window['${gmId}'];(` + function a () {
+  d.setAttribute('onload', `const self=this;${loaderIntro}if(self.once)return;self.once=true;self.remove();const GM=window['${gmId}'];delete window['${gmId}'];(` + function a () {
   /** script code here */
 
-}.toString() + ')()')})
\ No newline at end of file
+}.toString() + `)()${loaderOutro}//# sourceURL=${mockUrl}`)})
\ No newline at end of file