Cannot read properties of undefined (reading 'Int16Array')

Hello,
with
```
import  { indent } from "indent.js";
html=indent.html(html)

```
I am getting
```
Uncaught TypeError: Cannot read properties of undefined (reading 'Int16Array')
    at intArray (indent.js:677)
    at indent (indent.js:474)
    at Object.html (indent.js:451)
    at App.svelte:62
```

Any idea?