Deprecation warning in Chrome

Whenever I pipe output from one program to another, I would get this warning:

```
[Deprecation] SharedArrayBuffer will require cross-origin isolation as of M91, around May 2021
```

Steps to reproduce the issue:
1. Go to https://webassembly.sh/ and type `echo hello | lolcat`.
2. check chrome dev tools and you should see the mentioned deprecation warning.

