ng build works fine, but ng build --prod fails

[shoebsd31]

I get the following error :

**ERROR in Can't resolve all parameters for UserApi in E:/Source/Dev/Frontend2/src/app/services/api/UserApi.ts: ([object Object], ?).

ERROR in ./src/main.ts
Module not found: Error: Can't resolve './$$_gendir/app/app.module.ngfactory' in 'E:\Source\Dev\Frontend2\src'
@ ./src/main.ts 4:0-74
@ multi ./src/main.ts**

Everything works fine on ng --build and ng --serve.

I am not able to understand what does it do differently in --prod that it is throwing such error.

Also I checked UserApi.ts, which looks perfectly fine to me

my package.json is as follows :

{ "name": "demo-client", "version": "0.0.0", "license": "MIT", "angular-cli": {}, "scripts": { "ng": "ng", "build": "ng build --prod", "start": "ng serve --sourcemap --host localhost --port 8000", "test": "ng test", "pree2e": "webdriver-manager update --standalone false --gecko false", "e2e": "protractor" }, "private": true, "dependencies": { "@types/jasmine": "2.5.38", "@types/node": "^6.0.42", "@angular/core": "^4.0.1", "@angular/forms": "^4.0.1", "@angular/http": "^4.0.1", "@angular/platform-browser": "^4.0.1", "@angular/platform-browser-dynamic": "^4.0.1", "@angular/platform-server": "^4.0.1", "@angular/router": "^4.0.1", "angular-in-memory-web-api": "~0.2.4", "core-js": "^2.4.1", "ng2-accordion": "0.0.15", "ng2-bootstrap": "^1.4.2", "rxjs": "5.0.1", "systemjs": "0.19.40", "typescript": "^2.2.2", "zone.js": "^0.7.4" }, "devDependencies": { "@angular/cli": "^1.0.0", "@angular/compiler-cli": "4.0.0", "@types/jasmine": "2.5.38", "@types/node": "^6.0.42", "codelyzer": "~2.0.0-beta.1", "jasmine-core": "2.5.2", "jasmine-spec-reporter": "2.5.0", "karma": "1.2.0", "karma-chrome-launcher": "^2.0.0", "karma-cli": "^1.0.1", "karma-jasmine": "^1.0.2", "karma-remap-istanbul": "^0.2.1", "lodash": "^4.16.4", "protractor": "~4.0.13", "rimraf": "^2.5.4", "ts-node": "1.2.1", "tslint": "^4.3.0", "typescript": "~2.0.3" } }

I am using angular/cli version 1.0.0 and node : 7.7.2

[rochapablo]

I'm not sure if (Gbuomprisco/ngx-chips#345 (comment)) could be related.

But running locally works fine, but not when I build the application at Heroku.

"heroku-postbuild": "ng build --prod"

I still trying to understand where exactly it's the problem.

...

#6020

[filipesilva]

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