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Could not find module “@angular-devkit/build-angular”

由 北慕城南 提交于 2019-11-26 18:10:41

Install @angular-devkit/build-angular as dev dependency. This package is newly introduced in Angular 6.0

npm install --save-dev @angular-devkit/build-angular

or,

yarn add @angular-devkit/build-angular --dev

npm update

It worked like a charm.

for angular 6 and above

The working solution for me was

npm install

ng update

and finally

npm update

Need to explicitly get devDependencies.

npm i --only=dev
Murugaraju Perumalla

If the following command does not work,

npm install --save-dev @angular-devkit/build-angular

then move to the project folder and run this command:

npm install --save @angular-devkit/build-angular

npm install Just type npm install and run.Then the project will run without errors. Or you can use npm install --save-dev @angular-devkit/build-angular

grepit

All of the above answer are correct but they did not work for me. The only way I was able to make this work was by follow steps/commands:

npm uninstall -g @angular/cli@6.0.8
npm cache clean --force
npm install -g @angular/cli@latest
npm install node-sass -g
ng new MY_PROJECT_NAME
cp -r from_my_old_project to_new_MY_PROJECT_NAME

Try this one.

npm install

npm update

if it's shows something like this.

run npm audit fix to fix them, or npm audit for details

Do that!

Pushpinder Singh

Following commands works:

npm install
ng update

-You may see the message "We analyzed your package.json and everything seems to be in order. Good work!"

npm update

Then try dev build 

ng build

I got the error with type script, downgraded to 

npm install typescript@">=3.1.1 <3.2

ng build --prod

All success with prod build.

Below is the working combination 

ng --version

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.11.0
@angular-devkit/build-angular     0.11.0
@angular-devkit/build-optimizer   0.11.0
@angular-devkit/build-webpack     0.11.0
@angular-devkit/core              7.1.0
@angular-devkit/schematics        7.1.0
@angular/cli                      7.1.0
@ngtools/webpack                  7.1.0
@schematics/angular               7.1.0
@schematics/update                0.11.0
rxjs                              6.3.3
typescript                        3.1.6
webpack                           4.23.1

When we run commands like ng serve, it uses the local version of @angular/cli. So first install latest version of @angular/cli locally (without the -g flag). Then update the cli using ng update @angular/cli command. I thing this should fix the issue. Thanks

This link may help you if you are updating your angular project https://update.angular.io/

I struggled with the same problem just a minute ago. My project was generated using the v 1.6.0 of angular-cli.

1. npm update -g @angular/cli

2. editing my package.json changing the line
    "@angular/cli": "1.6.0",
      to
    "@angular/cli": "^1.6.0",

3. npm update

I hope my help is effective ツ

I had the same issue with Angular 7. Just executed the following command and error was solved.

npm install --save-dev @angular-devkit/build-angular

Try this first 

npm install --save-dev @angular-devkit/build-angular

If some error come again for missing packages try

npm install

That's works for me, commit and then:

ng update @angular/cli @angular/core
npm install --save-dev @angular/cli@latest

I had the same problem today, after upgrading node from v9 to v10.
My environment is set by docker and I had to remove this command from the my DockerFile :

npm link @angular/cli

It creates a symlink to the directory where node is installed.
I guess the angular/cli module in it do not have the same version as the one in the node_modules dir of my project, and this causes the issue.

running the following worked for me npm audit fix --force

add @angular-devkit/build-angular under your dev dependency and it will work, or you can also execute

npm install --save-dev @angular-devkit/build-angular

Delete package-lock.json and do npm install again. It should fix the issue.

** This fix is more suitable when you have created Angular 6 app using ng new and after installing other dependencies you find this error.

In my case, the issue is because of missing dependencies. Why dependencies is missing, because I've forgotten to call:

npm install

After calling the above command, all required dependencies are loaded in node_modules, and that is no more issue

Execute below Command on your CLI :

  • npm install
  • Delete the node_modules.
  • Clear the cache using'npm cache clean --verify'.
  • And then npm install again.

Works like a charm for me.

Dinesh Shaw

Try this. It worked for me

npm uninstall -g @angular/cli
npm cache verify
npm install -g @angular/cli@next

This error generally occurs when the angular project was not configure completely.

This will work

npm install --save-dev @angular-devkit/build-angular

npm install

Unfortunately, none of the provided solutions worked perfectly for me, but grepit's answer inspired me to do the following steps. I uninstalled node.js via my OS (Windows 10) and installed it again. Then installed Angular CLI. Then created a new project, and copied my old project's src file into this new one and the error's gone.

Here are the instructions:

  1. Uninstall node.js via your OS and install it again
  2. npm install -g @angular/cli
  3. Rename your project to YOUR_PROJECT_NAME.old
  4. ng new YOUR_PROJECT_NAME
  5. Run this hello world project (ng serve) to make sure that you won't get the error.
  6. xcopy YOUR_PROJECT_NAME.old\src\*.* YOUR_PROJECT_NAME\src /s
    This is Windows version of copy, change it based on your own OS.
npm install --save-dev @angular-devkit/build-angular@latest

solved it for me.

Just execute the following command and error was solved

  • ng update @angular/cli @angular/core
  • npm uninstall @angular-devkit/build-angular

  • npm install --save-dev @angular-devkit/build-angular

    if this error could not resolve by above command so you update node version

    • npm update npm -g
shivangi mehta

I am facing the same issue since 2 days.

ng -v :6.0.8
node -v :8.11.2
npm -v :6.1.0

Make sure you are in the folder where angular.json is installed. Get into that and type ng serve. If the issue still arises, then you are having only dependencies installed in node_modules. Type the following, and it will work:

npm i --only=dev

you npm version is old, try to run the following command:

npm i npm@latest -g

Simple solution

Hit below commend only to fix this error

npm install --save-dev @angular-devkit/build-angular
标签
angular
angular-cli
angular6
angular-cli-v6
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