Chart.js: webpack error in latest beta

[fab313]

Expected Behavior

I am using the latest chart.[email protected] with angular. Since the update from beta 4 to 5 I get an webpack error during building of the application.

Current Behavior

Module parse failed: Unexpected token (728:30)
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders

|               me._config = merge(Object.create(null), [
|                       defaults.controllers[me._type].datasets,
>                       me.chart.options[me._type]?.datasets,
|                       me.getDataset(),
|               ], {

Possible Solution

When I manually remove the optional operator the build works again. So I think it has to do with that.

Steps to Reproduce

• checkout https://github.com/fab313/chartjs-angular
• yarn
• ng serve

Environment

• Chart.js version: chart.[email protected]
• Browser name and version:
• Link to your project: https://github.com/fab313/chartjs-angular

[dcyou]

I am not alone, on my I am using Vuejs 2

[kurkle]

Oops, that is a draft: https://tc39.es/ecma262/#prod-OptionalExpression

We should remove that. In the mean time: https://github.com/webpack/webpack/issues/10227