Uncaught DOMException: XMLHttpRequest.responseType setter: synchronous XMLHttpRequests do not support timeout and responseType

[jumasheff]

Hey Kevin!

First of all, I'd like to thank you for this awesome project! I was thinking about building a free educational course for complete beginners and wondering if JSLinux would be a good project (if Mr. Bellard would allow me to do so). I stumbled upon your project but couldn't run it :(
If you have time, can you please look at this issue?

Thank you!

Caching sector 0... [html5storage.js:71:12](http://127.0.0.1:5500/storage/html5storage.js)
Caching sector 256... [html5storage.js:71:12](http://127.0.0.1:5500/storage/html5storage.js)
Caching sector 512... [html5storage.js:71:12](http://127.0.0.1:5500/storage/html5storage.js)
Caching sector 768... [html5storage.js:71:12](http://127.0.0.1:5500/storage/html5storage.js)
Caching sector 1024... [html5storage.js:71:12](http://127.0.0.1:5500/storage/html5storage.js)
Caching sector 1280... [html5storage.js:71:12](http://127.0.0.1:5500/storage/html5storage.js)
Caching sector 1536... [html5storage.js:71:12](http://127.0.0.1:5500/storage/html5storage.js)
Caching sector 1792... [html5storage.js:71:12](http://127.0.0.1:5500/storage/html5storage.js)
Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user’s experience. For more help https://xhr.spec.whatwg.org/#sync-warning [cpux86.js:9:105964](http://127.0.0.1:5500/cpux86.js)
Use of XMLHttpRequest’s responseType attribute is no longer supported in the synchronous mode in window context. [cpux86.js:9:106075](http://127.0.0.1:5500/cpux86.js)
Uncaught DOMException: XMLHttpRequest.responseType setter: synchronous XMLHttpRequests do not support timeout and responseType
    load_binary http://127.0.0.1:5500/cpux86.js:9
    load_binary http://127.0.0.1:5500/cpux86.js:9
    start http://127.0.0.1:5500/jslinux.js:62
    onload http://127.0.0.1:5500/emulator.html:1
[cpux86.js:9](http://127.0.0.1:5500/cpux86.js)
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