ng build Cannot find module 'webpack/lib/node/NodeTemplatePlugin' after ng update

1. I installed the global angular cli
2. Cloned repository https://github.com/splincode/css-unused-angular
3. Run $ ng update
4. And further on the scheme below:

Versions

before (see repo https://github.com/splincode/css-unused-angular) package.json (after ng update)

{
  "name": "css-usage",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build --prod",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "5.2.5",
    "@angular/common": "5.2.5",
    "@angular/compiler": "5.2.5",
    "@angular/core": "5.2.5",
    "@angular/forms": "5.2.5",
    "@angular/http": "5.2.5",
    "@angular/platform-browser": "5.2.5",
    "@angular/platform-browser-dynamic": "5.2.5",
    "@angular/router": "5.2.5",
    "core-js": "^2.4.1",
    "rxjs": "^5.5.6",
    "zone.js": "^0.8.20"
  },
  "devDependencies": {
    "@angular/cli": "1.7.0",
    "@angular/compiler-cli": "5.2.5",
    "@angular/language-service": "5.2.5",
    "@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",
    "materialize-css": "^0.100.2",
    "protractor": "~5.1.2",
    "ts-node": "~4.1.0",
    "tslint": "~5.9.1",
    "typescript": "2.6.2"
  }
}

Repro steps

$ ng -v

    _                      _                 ____ _     ___
   / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
  / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
 / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
/_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
               |___/
    
Angular CLI: 1.7.0
Node: 9.5.0
OS: win32 x64
Angular: 5.2.5
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

@angular/cli: 1.7.0
@schematics/package-update: 0.3.1
typescript: 2.6.2
webpack: error


$ npm i

> uws@0.14.5 install D:\dev\css-unused-angular\node_modules\uws
> node-gyp rebuild > build_log.txt 2>&1 || exit 0


> node-sass@4.7.2 install D:\dev\css-unused-angular\node_modules\node-sass
> node scripts/install.js

Cached binary found at C:\Users\splincode\AppData\Roaming\npm-cache\node-sass\4.7.2\win32-x64-59_binding.node

> uglifyjs-webpack-plugin@0.4.6 postinstall D:\dev\css-unused-angular\node_modules\@angular\cli\node_modules\webpack\node_modules\uglifyjs-webpack-plugin
> node lib/post_install.js


> node-sass@4.7.2 postinstall D:\dev\css-unused-angular\node_modules\node-sass
> node scripts/build.js

Binary found at D:\dev\css-unused-angular\node_modules\node-sass\vendor\win32-x64-59\binding.node
Testing binary
Binary is fine
npm WARN cache-loader@1.2.0 requires a peer of webpack@^2.0.0 || ^3.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN schema-utils@0.4.5 requires a peer of webpack@^2.0.0 || ^3.0.0 || ^4.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN @schematics/package-update@0.3.1 requires a peer of @angular-devkit/core@0.3.1 but none is installed. You must install peer dependencies yourself.
npm WARN @schematics/package-update@0.3.1 requires a peer of @angular-devkit/schematics@0.3.1 but none is installed. You must install peer dependencies yourself.

$ ng build
Cannot find module 'webpack/lib/node/NodeTemplatePlugin'
Error: Cannot find module 'webpack/lib/node/NodeTemplatePlugin'
    at Function.Module._resolveFilename (module.js:555:15)
    at Function.Module._load (module.js:482:25)
    at Module.require (module.js:604:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (D:\dev\css-unused-angular\node_modules\html-webpack-plugin\lib\compiler.js:11:26)
    at Module._compile (module.js:660:30)
    at Object.Module._extensions..js (module.js:671:10)
    at Module.load (module.js:573:32)
    at tryModuleLoad (module.js:513:12)
    at Function.Module._load (module.js:505:3)
    at Module.require (module.js:604:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (D:\dev\css-unused-angular\node_modules\html-webpack-plugin\index.js:7:21)
    at Module._compile (module.js:660:30)
    at Object.Module._extensions..js (module.js:671:10)
    at Module.load (module.js:573:32)

If I delete package-lock.json and again do npm i, so, will work. Do not you have to take into account the incorrect versions in package-lock.json?

[alexciesielski]

Can confirm, deleting node_modules and package-lock.json fixes this issue.

[angular-automatic-lock-bot[bot]]

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