Bug Report or Feature Request (mark with an x)

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- [ ] feature request

Versions.

ngular CLI: 1.5.0
Node: 8.6.0
OS: darwin x64
Angular: 5.0.0
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, platform-server, router

@angular/cli: 1.5.0
@angular-devkit/build-optimizer: 0.0.32
@angular-devkit/core: 0.0.20
@angular-devkit/schematics: 0.0.35
@ngtools/json-schema: 1.1.0
typescript: 2.4.2
webpack: 3.8.1

Repro steps.

ng build prod / ng build prod --aot

The log given by the failure.

Desired functionality.

I read the release note and it was "promised" smaller bundle size. Before upgrading from Angular 4.2.4 to 5.0.0 I created two different prod build one with --aot and another without.

After upgrading to 5.0.0 and angular cli 1.5 I changed to HttpClientModule and HttpClient to get my application to working again. This was the only change I did. I run again ng build prod and ng build prod --aot and I see a larger vendor bundle size. I'm doing something wrong?

This is the the repo I used to test build size.

Also how do I get minfy/ungly working on Angular 5? I thought this was done automatic on ng build prod.

Mention any other details that might be useful.

Screenshots.