Problem on ng add @angular/pwa

[jeanmazc]

Versions

Angular CLI: 6.2.0-beta.2
Node: 10.8.0
OS: win32 x64
Angular: 6.1.2
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

Package Version

@angular-devkit/architect 0.8.0-beta.2
@angular-devkit/build-angular 0.8.0-beta.2
@angular-devkit/build-optimizer 0.8.0-beta.2
@angular-devkit/build-webpack 0.8.0-beta.2
@angular-devkit/core 0.8.0-beta.2
@angular-devkit/schematics 0.8.0-beta.2
@angular/cli 6.2.0-beta.2
@angular/pwa 0.7.3
@ngtools/webpack 6.2.0-beta.2
@schematics/angular 0.8.0-beta.2
@schematics/update 0.8.0-beta.2
rxjs 6.2.2
typescript 2.9.2
webpack 4.16.5

Repro steps

ng new my-app
cd my-app
ng add @angular/pwa

The log given by the failure

Installing packages for tooling via npm.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.4 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

• @angular/pwa@0.7.3
  updated 1 package and audited 28982 packages in 11.073s
  found 12 vulnerabilities (9 low, 3 high)
  run npm audit fix to fix them, or npm audit for details
  Installed packages for tooling via npm.
  Could not find index file for the project

Desired functionality

Add the power of pwa.
The files and configurations were not generate in the project

[alexeagle]

I think this is a duplicate of #11640

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