Cannot load the library from the browser

**The version of Ajv you are using**
It works up to AJV 8.1.0. The bug start appearing with AJV 8.2.0.

**Operating system and node.js version**
Windows 10 / Firefox 91.0.2 (64-bit)
No node.js is used, I try to use the library from the browser.

**Error messages**
The following error message appears: "Uncaught ReferenceError: module is not defined"

This file shows the bug:
```html

```

With this file, everything is file:
```html

```