Flatpickr ESM Warning

[arnsimgue]

Hello everyone,

when we build our Angular app with Carbon Design we get these warnings:

▲ [WARNING] Module 'flatpickr/dist/plugins/rangePlugin' used by 'node_modules/carbon-components-angular/fesm2020/carbon-components-angular-datepicker.mjs' is not ESM

  CommonJS or AMD dependencies can cause optimization bailouts.
  For more information see: https://angular.dev/tools/cli/build#configuring-commonjs-dependencies


▲ [WARNING] Module 'flatpickr/dist/l10n/index' used by 'node_modules/carbon-components-angular/fesm2020/carbon-components-angular-datepicker.mjs' is not ESM

  CommonJS or AMD dependencies can cause optimization bailouts.
  For more information see: https://angular.dev/tools/cli/build#configuring-commonjs-dependencies

We use this Carbon, Node and Angular versions:

    "@carbon/icons": "11.69.0",
    "@carbon/styles": "1.92.0",
    "carbon-components-angular": "5.62.1",

    Angular CLI: 20.3.6
    Node: 24.10.0

Regarding flatpickr:
I checked the flatpickr GitHub and found this issue and the associated PR that were adding the ESM support back in 2020. From the information I found carbon-components-angular@5.62.1 uses the newest flatpickr@4.6.13, so this could be an issue on the Carbon Design side.

Maybe related issue:
I found this closed issue that could be related, since the warnings were also about flatpickr being CommonJS.

Are the warnings we get a known issue?