Angular 4 - Please include either "BrowserAnimationsModule" or "NoopAnimationsModule" in your application

Question

I'm having a problem when I launch my Angular app on my browser. Everything works code speaking but I'm still getting this error:

Found the synthetic property @routerAnimations. Please include either BrowserAnimationsModule or NoopAnimationsModule in your application.

I already checked the posts on this subject and there's quite a lot but all of them answered the same:

import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

and include it in the app module's imports.

imports: [
    BrowserAnimationsModule,
    ... 
]

That's what I did but still got the same error. I've been looking for hours for this solution. Anyone knows what could fix it ? Thanks

Here's my package.json:

{
  "name": "angular-bc",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@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",
    "core-js": "^2.4.1",
    "rxjs": "^5.4.2",
    "zone.js": "^0.8.14"
  },
  "devDependencies": {
    "@angular/cli": "1.4.3",
    "@angular/compiler-cli": "^4.2.4",
    "@angular/language-service": "^4.2.4",
    "@types/jasmine": "~2.5.53",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "~3.1.1",
    "jasmine-core": "~2.6.2",
    "jasmine-spec-reporter": "~4.1.0",
    "karma": "~1.7.0",
    "karma-chrome-launcher": "~2.1.1",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.2",
    "ts-node": "~3.2.0",
    "tslint": "~5.3.2",
    "typescript": "~2.3.3"
  }
}

Components : copied from answer

<div [@routerAnimations]="myOutlet.state">
    <router-outlet #myOutlet></router-outlet>
</div>

Answer 1

Adding the lines

import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

and

imports: [
    BrowserAnimationsModule,
    ... 
]

to app.module.ts actually solves it