ERROR in ./src/main.ts Module not found: Error: Can't resolve './$$_gendir/app/app.module.ngfactory'

[marciomsm]

I am getting ERROR in ./src/main.ts Module not found: Error: Can't resolve './$$_gendir/app/app.module.ngfactory' when I run ng build --prod, but if I run the command ng build --env=prod I get success.

Do we have any differences between these commands?

[ajalmaguer]

Happens for me too. These are the versions of my project:

@angular/cli: 1.1.3
node: 6.11.0
os: darwin x64
@angular/animations: 4.2.4
@angular/common: 4.2.4
@angular/compiler: 4.2.4
@angular/core: 4.2.4
@angular/forms: 4.2.4
@angular/http: 4.2.4
@angular/platform-browser: 4.2.4
@angular/platform-browser-dynamic: 4.2.4
@angular/router: 4.2.4
@angular/cli: 1.1.3
@angular/compiler-cli: 4.2.4
@angular/language-service: 4.2.4

[marciomsm]

I solved it setting the zone.js version to 0.8.14. I don't know if we have an issue on Angular-CLI or on zone.js.

[marius-oprea]

I did a successful ng build -prod a couple of hours ago, but now I get the same error without changing nothing to my project.

[bcravens]

@marius-oprea same thing just happened to me.

[mattrichard]

I'm getting the same error too. Updating zone.js did not work for me.

[jh-code]

Happening here as well. Very odd. Tried messing around with a lot of different versions of Angular, Angular CLI, Zone.js and others with no luck.

Same here, tried updating zone.js and it did not work

[bcravens]

We eventually solved it by mass updating our node packages. Not sure which one solved the problem, wasn't zone.js though.

@bcravens can you share your package.json?

[marius-oprea]

updating to @angular/cli 1.2.4 and the other packages to the latest version solved the issue for me.

[marciomsm]

Change your package.json to zone.js: 0.8.14. Delete node_modules folder and run npm install again.

Updating to @angular-cli: 1.2.4 fixed the issue for me.

[EricABC]

The patch rc.1 was released to address this, but others still indicate problems with rc.1 here: #7113. rc.1 fixed most of my apps, but for some sample projects I was using a tsconfig with 'include: []', relying on ng to pass my entrypoint to the compiler. When using AOT you will get this error even in rc.1 unless you include the entry points explicitly in tsconfig.

[joseph-mcallister]

None of the package updating worked for me but adding enhanced-resolve: 3.3.0 did. See #4551

[tianyuanzhonglu]

@angular/cli: 1.2.4 fix the problem