Can't serve due to uglifyjs-webpack-plugin 1.1.7 release

Versions

Angular CLI: 1.6.5
Node: 8.7.0
OS: darwin x64
Angular: 5.2.1
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

@angular/cdk: 2.0.0-beta.12
@angular/cli: 1.6.5
@angular-devkit/build-optimizer: 0.0.41
@angular-devkit/core: 0.0.28
@angular-devkit/schematics: 0.0.51
@ngtools/json-schema: 1.1.0
@ngtools/webpack: 1.9.5
@schematics/angular: 0.1.16
typescript: 2.5.3
webpack: 3.10.0

Repro steps

• ng new project
• ng serve
• npm run start - does the same thing

Observed behavior

> npm run start

> client1@0.0.0 start /u/admosity/git/_personal/lerna-repo/packages/client1
> ng serve

Cannot find module 'uglifyjs-webpack-plugin'
Error: Cannot find module 'uglifyjs-webpack-plugin'
    at Function.Module._resolveFilename (module.js:527:15)
    at Function.Module._load (module.js:476:23)
    at Module.require (module.js:568:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/u/admosity/git/_personal/lerna-repo/packages/client1/node_modules/@angular/cli/models/webpack-configs/production.js:13:24)
    at Module._compile (module.js:624:30)
    at Object.Module._extensions..js (module.js:635:10)
    at Module.load (module.js:545:32)
    at tryModuleLoad (module.js:508:12)
    at Function.Module._load (module.js:500:3)
    at Module.require (module.js:568:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/u/admosity/git/_personal/lerna-repo/packages/client1/node_modules/@angular/cli/models/webpack-configs/index.js:9:10)
    at Module._compile (module.js:624:30)
    at Object.Module._extensions..js (module.js:635:10)
    at Module.load (module.js:545:32)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! client1@0.0.0 start: `ng serve`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the client1@0.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /u/admosity/.npm/_logs/2018-01-29T19_50_52_816Z-debug.log

Desired behavior

Project should run

Mention any other details that might be useful (optional)

webpack-contrib/uglifyjs-webpack-plugin#217

[hansl]

After escalation and investigation, the webpack-contrib team released a new version 1.1.8 with everything proper in it. I’m going to close this issue as fixed, but we’ll look into fixing our dependency versions (and why it wasn’t fixed inthe first place). Thanks for your patience.

[EricWafford]

@seekheart is correct, in the cli package json it’s pulling in “uglifyjs-webpack-plugin”: “^1.1.5”, and the issue is with this package’s recent 1.1.7 release.

as a temporary workaround, npm i --save-dev uglifyjs-webpack-plugin@1.1.6 in the local project does seem to fix the issue. Not the best solution, but it got ng serve to work.