Issue when using `@glazed/datamodel`

[dabit3]

Description

It seems like the bundled code does not work.

Technical Information

An error is thrown when trying to import DataModel:

import { DataModel } from '@glazed/datamodel'

Throws this error

|   getDefinitionID(e) {
>     return r(this, n).definitions[e] ?? null;
|   }
|

To replicate:

1. Install dependency

npm install @glazed/datamodel

2. Import package

import { DataModel } from '@glazed/datamodel'

3. Run project

npm start

[PaulLeCam]

|   getDefinitionID(e) {
>     return r(this, n).definitions[e] ?? null;
|   }
|

This is just bundled code, what is the actual error please?