Skip to main content

Angular 5 Build issues - Cannot find module 'webpack/lib/dependencies/ContextElementDependency'

After upgrading to Node.js version 8 on our build server, one of our development teams contacted me because their build started to fail. Here is the error they got when running ‘ng build’:

2018-06-14T06:20:11.8790352Z ##[section]Starting: ng build

2018-06-14T06:20:11.9073421Z ==============================================================================

2018-06-14T06:20:11.9073421Z Task         : npm

2018-06-14T06:20:11.9073421Z Description  : Run an npm command

2018-06-14T06:20:11.9083182Z Version      : 0.2.22

2018-06-14T06:20:11.9083182Z Author       : Microsoft Corporation

2018-06-14T06:20:11.9083182Z Help         : [More Information](https://go.microsoft.com/fwlink/?LinkID=613746)

2018-06-14T06:20:11.9083182Z ==============================================================================

2018-06-14T06:20:15.5560039Z [command]C:\Program Files\nodejs\npm.cmd config list

2018-06-14T06:20:17.1849642Z ; cli configs

2018-06-14T06:20:17.1849642Z metrics-registry = "https://registry.npmjs.org/"

2018-06-14T06:20:17.1849642Z scope = ""

2018-06-14T06:20:17.1849642Z user-agent = "npm/5.6.0 node/v8.11.2 win32 x64"

2018-06-14T06:20:17.1849642Z

2018-06-14T06:20:17.1849642Z ; builtin config undefined

2018-06-14T06:20:17.1859408Z prefix = "C:\\Users\\AppData\\Roaming\\npm"

2018-06-14T06:20:17.1859408Z

2018-06-14T06:20:17.1859408Z ; node bin location = C:\Program Files\nodejs\node.exe

2018-06-14T06:20:17.1859408Z ; cwd = D:\b\3\_work\8\s\BBM

2018-06-14T06:20:17.1859408Z ; HOME = C:\Users\

2018-06-14T06:20:17.1859408Z ; "npm config ls -l" to show all defaults.

2018-06-14T06:20:17.1869174Z

2018-06-14T06:20:17.2357474Z [command]C:\Program Files\nodejs\npm.cmd run ng build

2018-06-14T06:20:20.5014978Z

2018-06-14T06:20:20.5014978Z > BBM@0.0.0 ng D:\b\3\_work\8\s\BBM

2018-06-14T06:20:20.5171234Z > ng "build"

2018-06-14T06:20:20.5171234Z

2018-06-14T06:20:30.8837324Z Cannot find module 'webpack/lib/dependencies/ContextElementDependency'

2018-06-14T06:20:30.8837324Z Error: Cannot find module 'webpack/lib/dependencies/ContextElementDependency'

2018-06-14T06:20:30.8837324Z     at Function.Module._resolveFilename (module.js:547:15)

2018-06-14T06:20:30.8837324Z     at Function.Module._load (module.js:474:25)

2018-06-14T06:20:30.8837324Z     at Module.require (module.js:596:17)

2018-06-14T06:20:30.8837324Z     at require (internal/module.js:11:18)

2018-06-14T06:20:30.8837324Z     at Object.<anonymous> (D:\b\3\_work\8\s\BBM\node_modules\@ngtools\webpack\src\plugin.js:8:34)

2018-06-14T06:20:30.8837324Z     at Module._compile (module.js:652:30)

2018-06-14T06:20:30.8837324Z     at Object.Module._extensions..js (module.js:663:10)

2018-06-14T06:20:30.8837324Z     at Module.load (module.js:565:32)

2018-06-14T06:20:30.8837324Z     at tryModuleLoad (module.js:505:12)

2018-06-14T06:20:30.8837324Z     at Function.Module._load (module.js:497:3)

2018-06-14T06:20:30.9325624Z npm ERR! code ELIFECYCLE

2018-06-14T06:20:30.9325624Z npm ERR! errno 1

2018-06-14T06:20:30.9345156Z npm ERR! BBM@0.0.0 ng: `ng "build"`

2018-06-14T06:20:30.9345156Z npm ERR! Exit status 1

2018-06-14T06:20:30.9345156Z npm ERR!

2018-06-14T06:20:30.9354922Z npm ERR! Failed at the BBM@0.0.0 ng script.

2018-06-14T06:20:30.9354922Z npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

2018-06-14T06:20:30.9520944Z

2018-06-14T06:20:30.9520944Z npm ERR! A complete log of this run can be found in:

2018-06-14T06:20:30.9520944Z npm ERR!     C:\Users\AppData\Roaming\npm-cache\_logs\2018-06-14T06_20_30_933Z-debug.log

2018-06-14T06:20:31.3720324Z ##[error]npm failed with error: C:\Program Files\nodejs\npm.cmd failed with return code: 1

2018-06-14T06:20:31.3720324Z ##[section]Finishing: ng build

Here are the steps we took to fix it:

  • Step 1  - Deleted the node modules from the build folder
  • Step 2 – Removed the existing package-lock.json
  • Step 3 - Run npm install
  • Step 4 – Check in the newly created package-lock.json

After doing that, the build started to work again. (My love/hate relationship with NPM continues…Smile)

Labels:

Popular posts from this blog

.NET 8–Keyed/Named Services

A feature that a lot of IoC container libraries support but that was missing in the default DI container provided by Microsoft is the support for Keyed or Named Services. This feature allows you to register the same type multiple times using different names, allowing you to resolve a specific instance based on the circumstances. Although there is some controversy if supporting this feature is a good idea or not, it certainly can be handy. To support this feature a new interface IKeyedServiceProvider got introduced in .NET 8 providing 2 new methods on our ServiceProvider instance: object? GetKeyedService(Type serviceType, object? serviceKey); object GetRequiredKeyedService(Type serviceType, object? serviceKey); To use it, we need to register our service using one of the new extension methods: Resolving the service can be done either through the FromKeyedServices attribute: or by injecting the IKeyedServiceProvider interface and calling the GetRequiredKeyedServic...
Read more

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.
Read more

Kubernetes–Limit your environmental impact

Reducing the carbon footprint and CO2 emission of our (cloud) workloads, is a responsibility of all of us. If you are running a Kubernetes cluster, have a look at Kube-Green . kube-green is a simple Kubernetes operator that automatically shuts down (some of) your pods when you don't need them. A single pod produces about 11 Kg CO2eq per year( here the calculation). Reason enough to give it a try! Installing kube-green in your cluster The easiest way to install the operator in your cluster is through kubectl. We first need to install a cert-manager: kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.5/cert-manager.yaml Remark: Wait a minute before you continue as it can take some time before the cert-manager is up & running inside your cluster. Now we can install the kube-green operator: kubectl apply -f https://github.com/kube-green/kube-green/releases/latest/download/kube-green.yaml Now in the namespace where we want t...
Read more