App won't build with service worker after updating to v6

[Ploppy3]

I'm submitting a...

[x] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[ ] Performance issue
[ ] Feature request
[ ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question
[ ] Other... Please describe:

Current behavior

App does not build with a service worker

Error: Expected to find an ngsw-config.json configuration file in the [root/project/path] folder. Either provide one or disable Service Worker in your angular.json configuration file.
Error: Error: Expected to find an ngsw-config.json configuration file in the [root/project/path] folder. Either provide one or disable Service Worker in your angular.json configuration file.

Expected behavior

App should build with service worker enabled after updading to v6.

Minimal reproduction of the problem with instructions

Update an ng5 app with a service worker to ng6 using https://update.angular.io/

Build the app:
ng build --prod

NB: I even tried to set up the service worker again with the new @angular/pwa package as described here: https://angular.io/guide/service-worker-getting-started#adding-a-service-worker-to-your-project

NB: The docs says that the ngsw-config.json is located in the src folder (https://angular.io/guide/service-worker-config#service-worker-configuration)
While the error says it should be located at the root of the project. The @angular/pwa create the file at the root ; moving the ngsw-config.json file to the src folder does not fix the issue.

Environment

Angular CLI: 6.0.0                                            
Node: 8.9.4                                                   
OS: win32 x64                                                 
Angular: 6.0.0                                                
... animations, cdk, cli, common, compiler, compiler-cli, core
... forms, http, language-service, material, platform-browser 
... platform-browser-dynamic, platform-server, router         
... service-worker                                            
                                                              
Package                           Version                     
-----------------------------------------------------------   
@angular-devkit/architect         0.6.0                       
@angular-devkit/build-angular     0.6.0                       
@angular-devkit/build-optimizer   0.6.0                       
@angular-devkit/core              0.6.0                       
@angular-devkit/schematics        0.6.0                       
@angular/pwa                      0.6.0                       
@ngtools/webpack                  6.0.0                       
@schematics/angular               0.6.0                       
@schematics/update                0.6.0                       
rxjs                              6.1.0                       
typescript                        2.7.2                       
webpack                           4.6.0                       

[boradakash]

I have also experienced the same error after upgrading to v6,
and that issue looks related to path of angular service worker config file(ngsw-config.json)
When I updated v6 using ng update it has created following path in angular.json file
"ngswConfigPath": "/src/ngsw-config.json",
then I changed to this
"ngswConfigPath": "src/ngsw-config.json",
and then I am able to build it successfully :)
Hope that helps!

[Ploppy3]

@boradakash Yeah, you're right the ngsw-config.json has to be in the src folder and your config fix did the trick for me. I'm successfully able to build again.

[manughub]

We're on it.

[whyvrafvr]

thx @boradakash

[ranbuch]

I was having the same problem when my config file configure like this:
"ngswConfigPath": "src/ngsw-config.json"
I was trying to build ng b --prod from src/app/shared instead of building from the root folder.
Building from the root folder fix the issue for me.

[alxhub]

I'm closing this as I believe the issue to be fixed. As I've tested with Angular 7, ng add @angular/pwa seems to do the right thing and put the ngsw-config.json in root.

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