error TS2307: Cannot find module '@ng-bootstrap/ng-bootstrap'

Question

I added NGBootstrap in angular 5 project. But after sometime it's not working and I am getting below error. Tried to resolve issue by upgrading CLI version but still issue is not resolve. Please check package.json.

ERROR in src/app/app.module.ts(5,27): error TS2307: Cannot find module '@ng-bootstrap/ng-bootstrap'. src/app/find-product/searchtabcontent/search-by-family/search-by-family.component.ts(2,48): error TS2307: Cannot find module '@ng-bootstrap/ng-bootstrap'

package.json

{
  "name": "ng5",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve --proxy-config proxy.conf.json",
    "build": "ng build --prod --base-href=/UI/pages/",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^5.2.0",
    "@angular/common": "^5.2.0",
    "@angular/compiler": "^5.2.0",
    "@angular/core": "^5.2.0",
    "@angular/forms": "^5.2.0",
    "@angular/http": "^5.2.0",
    "@angular/platform-browser": "^5.2.0",
    "@angular/platform-browser-dynamic": "^5.2.0",
    "@angular/router": "^5.2.0",
    "@ng-bootstrap/ng-bootstrap": "^1.1.2",
    "core-js": "^2.4.1",
    "rxjs": "^5.5.6",
    "zone.js": "^0.8.19"
  },
  "devDependencies": {
    "@angular/cli": "^6.0.1",
    "@angular/compiler-cli": "^5.2.0",
    "@angular/language-service": "^5.2.0",
    "@types/jasmine": "~2.8.3",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "^4.0.1",
    "jasmine-core": "~2.8.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~2.0.0",
    "karma-chrome-launcher": "~2.2.0",
    "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": "~4.1.0",
    "tslint": "~5.9.1",
    "typescript": "~2.5.3",
    "@angular-devkit/build-angular": "~0.6.1"
  }
}

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';
import { NgbModule } from '@ng-bootstrap/ng-bootstrap';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';


@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    NgbModule.forRoot(),
    BrowserModule,
    AppRoutingModule,
    FormsModule,
    HttpClientModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Answer 1

If you have already tried to re npm install after deleting node_modules, the problem persists, and you also then double-checked that '@ng-bootstrap' is under your node_modules directory, I would proceed as follows:

• I would try first restarting the IDE, happens with Visual Studio Code and others as well...

• Also you could try this (this would be for linux):

  1. sudo npm install --save @ng-bootstrap/ng-bootstrap
  2. cd @ng-bootstrap
  3. sudo npm install

• Make sure, in case you have more than one module, that only the app.module has the import like NgbModule.forRoot(), any other module should only have NgbModule within the import []

Hope it helps :)