Warning Cannot Find Module jasmine core Use force to Continue

Source:

My project was generated with Angular CLI version 1.2.6.

I can compile the project and it works fine, but I always get error in VSCode telling me:

              cannot  find module '@angular/core' cannot find module '@angular/router' cannot find module .....                          

I have attached content of my tsconfig.json file this has been really frustrating for me, spending 2 hours to figure out what is wrong, I have also uninstalled and reinstalled the VSCode it doesn't work.

Here is my environment specification:

            @angular/cli: 1.2.6 node: 6.9.1 os: win32 x64 @angular/animations: 4.3.4 @angular/common: 4.3.4 @angular/compiler: 4.3.4 @angular/core: 4.3.4 @angular/forms: 4.3.4 @angular/http: 4.3.4 @angular/platform-browser: 4.3.4 @angular/platform-browser-dynamic: 4.3.4 @angular/router: 4.3.4 @angular/cli: 1.2.6 @angular/compiler-cli: 4.3.4 @angular/language-service: 4.3.4                      

OS: Microsoft vs 10 enterprise

project root folder

            .angular-cli.json .editorconfig .gitignore .vscode e2e karma.conf.js node_modules package.json protractor.conf.js README.md src tsconfig.json tslint.json                      

node_modules folder

            -@angular --animations --cli --common --compiler --compiler-cli --core ---@angular ---bundles ---core.d.ts ---core.metadata.json ---package.json ---public_api.d.ts ---README.md ---src ---testing ---testing.d.ts ---testing.metadata.json --forms --http --language-service --platform-browser --platform-browser-dynamic --router --tsc-wrapped @ng-bootstrap @ngtools -@types --jasmine --jasminewd2 --node --q --selenium-webdriver                      

tsconfig.json:

            {   "compileOnSave": false,   "compilerOptions": {     "outDir": "./dist/out-tsc",     "sourceMap": true,     "declaration": false,     "moduleResolution": "node",     "emitDecoratorMetadata": true,     "experimentalDecorators": true,     "target": "es5",     "typeRoots": [       "node_modules/@types"     ],     "lib": [       "es2016",       "dom"     ]   } }                      

I was facing this issue only while importing my own created components/services For those of you like me, for whom the accepted solution did not work, can try this:

Add

              "baseUrl": "src"                          

in your tsconfig.json. The reason is that visual code IDE is unable to resolve the base url so is unable to resolve path to imported components and gives error/warning.

Whereas angular compiler takes src as baseurl by default so it is able to compile.

NOTE:

You need to restart VS Code IDE to make this change come into effect.

EDIT:

As mentioned in one of the comments, in some cases changing workspace version might also work. More details here: https://github.com/Microsoft/vscode/issues/34681#issuecomment-331306869

Most likely missing node_modules package in the angular project, run:

              npm install                          

inside the angular project folder.

Visual Code restart is needed if any update or install or clear cache

the fix for me was to run

              npm install                          

and then unload,then reload the project in visual studio.

I was facing this issue in my angular 5 application today. And the fix which helped me, was simple. I added "moduleResolution": "node" to the compilerOptions in the tsconfig.json file. My complete tsconfig.json file content is below.

              {   "compileOnSave": false,     "compilerOptions": {     "baseUrl": "./",     "outDir": "./dist/out-tsc",     "sourceMap": true,     "declaration": false,     "moduleResolution": "node",     "emitDecoratorMetadata": true,     "experimentalDecorators": true,     "target": "es5",     "typeRoots": [       "node_modules/@types"     ],     "lib": [       "es2017",       "dom"     ]   } }                          

The moduleResolution specify module resolution strategy. The value of this settings can be node or classic. You may read more about this here.

Delete Node Modules folder from project folder.Run below command

npm cache clean --force npm install

It should work.

I was facing the same issue , there could be two reasons for this-

1. Your src base folder might not been declared, to resolve this go to tsconfig.json and add the baseUrl as "src"

                              {                "compileOnSave"                :                false                ,                "compilerOptions"                :                {                "baseUrl"                :                "src"                ,                "outDir"                :                "./dist/out-tsc"                ,                "sourceMap"                :                true                ,                "declaration"                :                false                ,                "downlevelIteration"                :                true                ,                "experimentalDecorators"                :                true                ,                "module"                :                "esnext"                ,                "moduleResolution"                :                "node"                ,                "importHelpers"                :                true                ,                "target"                :                "es2015"                ,                "lib"                :                [                "es2018"                ,                "dom"                ]                }                ,                "angularCompilerOptions"                :                {                "fullTemplateTypeCheck"                :                true                ,                "strictInjectionParameters"                :                true                }                }                          

1. you might have problem in npm , To resolve this , open your command window and run-npm install

Try using:

              npm audit fix --force                          

and then:

              npm install --save @ng-bootstrap/ng-bootstrap                          

instead of saving @ng-bootstrap/ng-bootstrap globally.

I had the same problem. I resolved it by clearing npm cache which is at "C:\Users\Administrator\AppData\Roaming\npm-cache"

Or you can simply run:

              npm cache clean --force                          

and then close vscode, and then open your folder again.

In the VSCode status bar, it must be showing typescript version - like this

Clicking on that version number will show you this, different versions available.

If you are using the VSCode version then switching to Workspace version solves the problem if it is VScode issue rather than your tsconfig.json (I am already using that one, so not highlighted)

I tried a lot of stuff the guys informed here, without success. After, I just realized I was using the Deno Support for VSCode extension. I uninstalled it and a restart was required. After restart the problem was solved.

You need to install it manually.

              $ npm i @angular/core -s                          

The fix for me was to import the entire project. For those who have this problem in 2019 please check if you have imported the entire project not a part of the project.

If you did what I (foolishly) did... Which was drag and drop a component folder into my project then you'll probably be able to solve it by doing what I did to fix it.

Explanation: Basically, by some means Angualar CLI must tell InteliJ what @angular means. If you just plop the file in your project without using the Angular CLI i.e. ng g componentName --module=app.module then Angular CLI doesn't know to update this reference so IntelliJ has no idea what it is.

Approach: Trigger the Angular CLI to update references of @angular. I currently know only one way to do this...

Implementation: Add a new component at the same level as the component your having issues with. ng g tempComponent --module=app.module This should force the Angular CLI to run and update these references in the project. Now just delete the tempComponent you just created and don't forget to remove any reference to it in app.module.

Hope this helps someone else out.

I had the same issue, was strange because project compiled and ran without errors. I updated npm and then reinstalled the packages

              npm update npm install                          

then vs code stop saying that.

Most likely npm package is missing. And sometimes npm install does not fix the problem.

I have faced the same and I have solved this issue by deleting the node_modules folder and then npm install

In my case it was a mispelling of the import line. Check that you have spelt the @angular/core part properly if typing it out manually.

                                  import                  {                  Component                  }                  from                  '@angular/core';              

I faced the same problem , As I'm trying to work on angular project in VS code.

The solution for which this issue resolved is .

1. Delete the node_modules folder if you have one in your project folder

2.run the following command in terminal

npm install

1. Then Run npm audit fix

2. Then Run npm audit fix --force

now the issue will be resolved.

Executing the following two commands solves the problem for me:

              npm install -g @angular/cli ng update --all --force                          

for Visual Studio -->

                              Seems like you don't have `node_modules` directory in your project folder.           Execute this command where `package.json` file is located:           npm install                          

Try this, it worked for me:

              npm i --save @angular/platform-server                          

Then reopen VS code

This worked for me.

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

In my case, when i upgrade vs project to angular 10, I had this errors.

Angular cli creates tsconfig.json, tsconfig.base.json and tsconfig.app.json when i delete tsconfig.json and rename tsconfig.base.json to tsconfig.ts all things will Ok. you must also change extends inside tsconfig.app.json to tsconfig.json

I had same problems with Sublime Text.

I came up with following solution: I just edited

tsconfig.json

in the root of Angular workspace to include my freshly created application.

                              {   "files": [],   "references": [     {       "path": "./projects/client/tsconfig.app.json"     },     {       "path": "./projects/client/tsconfig.spec.json"     },     {       "path": "./projects/vehicle-market/tsconfig.app.json"     },     {       "path": "./projects/vehicle-market/tsconfig.spec.json"     },     {       "path": "./projects/mobile-de-lib/tsconfig.lib.json"     },     {       "path": "./projects/mobile-de-lib/tsconfig.spec.json"     }   ]     }                          

Occurs when cloning or opening existing projects in Visual Studio Code. In the integrated terminal run the command npm install

I've encountered this problem and fixed it by following commands.

              npm cache clean --force npm i @angular/core -s                          

And then don't forget to restart your VS code. It must be fixed.

Do run

              npm install                          

it will work most of the cases

All you need to do is that you have to include nodes_modules folder in your project. You might face this problem when you clone any project from github through git command line.

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