Cannot find module '@angular-devkit/core'
JavascriptAngularEcmascript 6Angular CliJavascript Problem Overview
I have created a angular project with Angular CLI: 1.6.3 Node: 9.4.0 OS: linux x64 version. But when want to run my angular app with command ng serve then fetch this error
> Cannot find module '@angular-devkit/core'.
Javascript Solutions
Solution 1 - Javascript
Try the following steps,
Step 1:
npm update -g @angular/cli
Step 2:
Edit your package.json changing the line
"@angular/cli": "1.6.0",
to
"@angular/cli": "^1.6.0",
STEP 3:
npm update
Refer the steps
Solution 2 - Javascript
Step1: Edit your package.json changing the line
@angular/cli": "1.6.4"
to
@angular/cli": "^1.6.4"
Step2:
npm update -g @angular/cli
Step3:
npm install --save-dev @angular/cli@latest
I was facing the exact same problem. These three did the tasks for me. You may like to see https://github.com/angular/angular-cli/issues/9307
Solution 3 - Javascript
try this out
npm install @angular-devkit/core --save-dev
https://github.com/angular/devkit/issues/256
try to update your angular cli
Solution 4 - Javascript
This can happen on different versions on angular-cli. You can install it manually with
npm i -D @angular-devkit/core
> -D is shortcut to --save-dev
Or try the latest version of angular cli
npm install --save-dev @angular/cli@latest
Solution 5 - Javascript
package.json, change to "@angular/cli": "^1.6.5",
"devDependencies": {
"@angular/cli": "^1.6.5",
"@angular/compiler-cli": "^5.0.0",
Important, the version could be vary depends on what time.
You really should run
npm update -g @angular/cli
first, to get version, my is 1.6.5
What does the "^" do?
~1.0.2 means to install version 1.0.2 or the latest patch version such as 1.0.4.
^1.0.2 means to install version 1.0.2 or the latest minor or patch version such as 1.1.0.
last, run this
npm update
Solution 6 - Javascript
Just run:
npm install --save-dev @angular/cli@latest
In the project folder, to fix it.
Solution 7 - Javascript
I did it by deleting package-lock.json and the node_modules folder. After that run "npm install" and start the application again.
Solution 8 - Javascript
You can do
First,
Delete the node_modules folder
Run npm install
And add devkit to your dev dependancies with npm i -D @angular-devkit/core
Solution 9 - Javascript
Step 1: delete package-lock.json Step 2: npm update -g @angular/cli Step 3: update @angular/cli new version in package.json Step 4: npm install
It worked for me.
Solution 10 - Javascript
I only installed my angular/cli using:
npm install -g @angular/[email protected]
And I started getting this error.
Solution:
If your version is global and
If you don't mind the version of your angular/cli then type:
npm update -g @angular/cli
Solution 11 - Javascript
for me adding @angular-devkit/core solved the issue
npm install --save-dev @angular-devkit/core
Solution 12 - Javascript
I had this same error after updating some packages.
In my package.json I had the most current '@angular-devkit/core'
Using the standard solution to many problems:
rm -R node_modules/
npm install
And I updated the @angular/cli
npm install --save-dev @angular/cli@latest
and finally:
npm start
Solution 13 - Javascript
Only change "@angular/cli": "1.6.4", to "@angular/cli": "^1.6.4", and update npm with: npm update