Production build remove meta data needed for dynamic compilation

[vijayanandkannan]

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angular/cli: 1.6.1

Output from: `ng --version`.
If nothing, output from: `node --version` and `npm --version`.
  Windows (7/8/10). Linux (incl. distribution). macOS (El Capitan? Sierra?)

Angular CLI: 1.6.1
Node: 8.2.1
OS: win32 x64
Angular: 5.1.0
... animations, common, compiler, compiler-cli, core, forms
... http, platform-browser, platform-browser-dynamic
... platform-server, router, upgrade

@angular/cli: 1.6.1
@angular-devkit/build-optimizer: 0.0.36
@angular-devkit/core: 0.0.22
@angular-devkit/schematics: 0.0.42
@ngtools/json-schema: 1.1.0
@ngtools/webpack: 1.9.1
@schematics/angular: 0.1.11
@schematics/schematics: 0.0.11
typescript: 2.4.2
webpack: 3.10.0

angular-cli - 1.6.1

### Repro steps

I am enclosing the Project that is dynamic loading and lazy loaded.  

When you compile with ng build --prod, it complies the project, but I get the error when l want to load the dynamic module.

### Observed behavior

main.9e6aeb37dd5ba46c064b.bundle.js:1 ERROR Error: No NgModule metadata found for 'function (){}'.
    at t.resolve (0.a2f5d473ce6db5a627d2.chunk.js:1)
    at t.getNgModuleMetadata (0.a2f5d473ce6db5a627d2.chunk.js:1)
    at t._loadModules (0.a2f5d473ce6db5a627d2.chunk.js:1)
    at t._compileModuleAndAllComponents (0.a2f5d473ce6db5a627d2.chunk.js:1)
    at t.compileModuleAndAllComponentsSync (0.a2f5d473ce6db5a627d2.chunk.js:1)
    at t.compileModuleAndAllComponentsSync (0.a2f5d473ce6db5a627d2.chunk.js:1)
    at t.addComponent (0.a2f5d473ce6db5a627d2.chunk.js:1)
    at t.ngAfterContentInit (0.a2f5d473ce6db5a627d2.chunk.js:1)
    at be (main.9e6aeb37dd5ba46c064b.bundle.js:1)
    at main.9e6aeb37dd5ba46c064b.bundle.js:1

### Desired behavior

What would like to see implemented?

I like to see this error go and the dynamic module loaded.

If you use ng serve then it works. The problem is only with prod build.

What is the usecase?
What did you expect to see?

Have some resolutions. Lot of us are affected with this. This is working in Angular 4... Versions.


### Mention any other details that might be useful (optional)

Enclosing the project that you can try out.
[HeroComponent.zip](https://github.com/angular/angular-cli/files/1563617/HeroComponent.zip)

[vijayanandkannan]

Files not getting attached. Trying again.

HeroComponent.zip

[Toxicable]

The build optimizer is what removes metadata since it is not needed at runtime. Not Angular itself

[vijayanandkannan]

@Toxicable I tried with the option --build-optimizer set to false

ng build --prod --build-optimizer=false, still it does not work. I followed the documentation as mentioned in the below link. Let me know If I miss something.

https://github.com/angular/angular-cli/blob/master/docs/documentation/build.md

-Vijay

[halilibrahim]

Hi,
Any progress on this?

[filipesilva]

Thanks for reporting this issue. This issue is now obsolete due to changes in the recent releases. Please update to the most recent Angular CLI version.

If the problem persists after upgrading, please open a new issue, provide a simple repository reproducing the problem, and describe the difference between the expected and current behavior.