Module parse failed: Unexpected token patronum.umd.js

Optional chaining `?.` on many places of code

```javascript
p({ type: t, name: o, scopeName: n?.name, value: e });
```

patronum@1.12.3

Start by inspecting the published patronum.umd.js from patronum@1.12.3 and reproduce the reported parse failure using the optional-chaining example. Trace the package entry point or build configuration that produces this bundle; done means the distributed UMD module parses successfully in the affected environment.

Written by the indexing model from the issue text.