Issue with the tree shaking

[ghost]

Bug Report or Feature Request (mark with an x)

- [ x] bug report -> please search issues before submitting
- [ ] feature request

Versions.

1.0.2

Repro steps.

I create a simple projet with angular/cli
I added two libs:
"@angular/animations": "^4.0.0" "primeng": "4.0.0"
In app.module.ts, I had:
import { SharedModule as PrimeNgSharedModule } from 'primeng/primeng';
When I import PrimeNgSharedModule in @NgModule.imports, my bundle grows from 2.29mb to 3.19mb ! (this module is very small...)

Whatever module, I had, the size will be always the same, all the content of primeng/primeng is added, there is not tree shaking here....

[filipesilva]

Mostly dupe of #2901.

The amount of tree shaking that happens depends on how primeng is setup as well. Webpack supports limited tree shaking (depends on your definition), not as much as rollup. We currently used Webpack and are thus limited by their support.

[debuggerpk]

hi @filipesilva, mind if i ask, does angular team has any plans of moving to rollup?

[filipesilva]

No, that is not part of our plans currently. It would require a massive rework of the build system.

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