Angular-cli: --aot build error: ERROR in ./src/main.ts Module not found

[pageii]

Issue Description

$ng serve with build param --aot has error:

ERROR in ./src/main.ts Module not found ...

However, build is successful using plain ng serve or ng serve --prod.

OS?

Mac OSX Sierra

Versions.

angular-cli: 1.0.0-beta.26
node: 7.2.1
os: darwin x64
@angular/common: 2.4.4
@angular/compiler: 2.4.4
@angular/core: 2.4.4
@angular/forms: 2.4.4
@angular/http: 2.4.4
@angular/platform-browser: 2.4.4
@angular/platform-browser-dynamic: 2.4.4
@angular/router: 3.4.4
@angular/compiler-cli: 2.4.4

Repro steps.

N.A. default Angular-cli

The log given by the failure.

ERROR in ./src/main.ts
Module not found: Error: Can't resolve './$$_gendir/app/app.module.ngfactory' in '/Users/home/Desktop/web_2/Dev/00_Active_Dev/src'
 @ ./src/main.ts 4:0-74
 @ multi webpack-dev-server/client?http://localhost:4200/ ./src/main.ts

ERROR in ./~/@angular/core/src/linker/system_js_ng_module_factory_loader.js
Module not found: Error: Can't resolve '/Users/home/Desktop/web_2/Dev/00_Active_Dev/src/$$_gendir' in '/Users/home/Desktop/web_2/Dev/00_Active_Dev/node_modules/@angular/core/src/linker'
 @ ./~/@angular/core/src/linker/system_js_ng_module_factory_loader.js 71:15-36 87:15-102
 @ ./~/@angular/core/src/linker.js
 @ ./~/@angular/core/src/core.js
 @ ./~/@angular/core/index.js
 @ ./src/main.ts
 @ multi webpack-dev-server/client?http://localhost:4200/ ./src/main.ts

[Meligy]

Can you please provide the source for the app module? Or even better a small project that shows this problem happening?

Also, do you have the same issue if you use NPM 6.x?

Thanks a lot.

[luisabreu]

Just finished fixing one of these...In my case, someone had copied one component to another folder (in a different module). So, I've ended with:
/drivers/driver.component.ts (included in driver.module.ts)
...
/user/driver.component.ts (no included in any module)~

Interestingly, the error msg said that /drivers/driver.component.ts wasn't associated to any module (instead of /user/drivers,component.ts)...

[filipesilva]

If you can provide us with a repo we can look at, we might be able to help. The error by itself doesn't tell me much though.

[sw-tt-tarunvarma]

I have deleted my existing module from angular js 2 then it will be raise this kind of error.

[sw-tt-tarunvarma]

Ok. I got the solutions please restart your app. if you delete any existing module in your app.

[pageii]

Thank you for your wonderful responses and fixes.

In NG4 beta+ && Node 7+. aot runs splendidly including lazily-loaded modules. The performance is phenomenal (see below for versions used). Can't image how much better it can get when I top it up with Service workers and Universal.

@angular/cli: 1.0.0-beta.31 (NG4 is going into RC4 as of writing)
node: 7.4.0
os: darwin x64
@angular/common: 4.0.0-beta.7
@angular/compiler: 4.0.0-beta.7
@angular/core: 4.0.0-beta.7
@angular/forms: 4.0.0-beta.7
@angular/http: 4.0.0-beta.7
@angular/material: 2.0.0-beta.2
@angular/platform-browser: 4.0.0-beta.7
@angular/platform-browser-dynamic: 4.0.0-beta.7
@angular/router: 4.0.0-beta.7
@angular/cli: 1.0.0-beta.31
@angular/compiler-cli: 4.0.0-beta.7

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