Angular 11 warning: CommonJS or AMD dependencies can cause optimization bailouts

[nam-vuhoang]

I got this warning message from Angular after installing ng2-tree:

...src\app\app.module.ts depends on 'ng2-tree'. CommonJS or AMD dependencies can cause optimization bailouts.
For more info see: https://angular.io/guide/build#configuring-commonjs-dependencies

Is it possible to make ng2-tree an ECMAScript module instead of CommonJS module?