Barrel and Circular dependency

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

Versions.

@angular/cli: 1.3.0
node: 6.11.0
os: linux x64
@angular/animations: 4.3.4
@angular/common: 4.3.4
@angular/compiler: 4.3.4
@angular/core: 4.3.4
@angular/flex-layout: 2.0.0-beta.8
@angular/forms: 4.3.4
@angular/http: 4.3.4
@angular/material: 2.0.0-beta.8
@angular/cdk: 2.0.0-beta.8
@angular/platform-browser: 4.3.4
@angular/platform-browser-dynamic: 4.3.4
@angular/router: 4.3.4
@angular/cli: 1.3.0
@angular/compiler-cli: 4.3.4
@angular/language-service: 4.3.4

Repro steps.

The following will generate circular deps warning between a.compoentnt.ts -> index.ts -> a.component.ts

module/
|- a.component.ts
|- b.model.ts
|- index.ts

a.compoennt.ts:

import {B} from '.'

b.component.ts

export class B { }

index.ts

export * from './b.model.ts';
export * from './a.component.ts';

Desired functionality.

An option to ignore these kind of circular deps A => barrel => A

Circular deps check is great (I was able to find real ones), and I would like to keep this option always on, but its too noisy with barrels.

[guilhermejcgois]

Just don’t import from the barrels, import from the stuff1.service itself…

[Socolin]

Barrels works great when you have multiple module.

Simple rule: Do not import a symbol from a barrel that export the current file.