Leon Gaban Leon Gaban - 1 year ago 431
Node.js Question

Error: Cannot find module 'jasmine-core'

I installed the following for testing:

"devDependencies": {
"jasmine-core": "^2.4.1",
"karma": "^0.13.22",
"karma-jasmine": "^0.3.7",
"karma-phantomjs-launcher": "^1.0.0"

After running
karma start
I get the following error:

enter image description here

Doing a search this is the first question with the same problem: karma start Cannot find module 'jasmine-core'

However I've tried both answers, installed
globally and I already did
npm install jasmine-core --save-dev


<!DOCTYPE html>
<html lang="en">
<title>Jasmine Spec Runner</title>
<link href="testing.css" rel="stylesheet">
<script src="../app/assets/js/libs/vendors.min.js"></script>
<script src="../app/assets/js/bundle.js"></script>


<h1>Jasmine tests for Dashboard</h1>



// Karma configuration
// Generated on Mon Mar 14 2016 11:56:04 GMT-0500 (CDT)

module.exports = function(config) {

// base path that will be used to resolve all patterns (eg. files, exclude)
basePath: '.',

// frameworks to use
// available frameworks: https://npmjs.org/browse/keyword/karma-adapter
frameworks: ['jasmine'],

// list of files / patterns to load in the browser
files: [

// list of files to exclude
exclude: [

// preprocess matching files before serving them to the browser
// available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
preprocessors: {

// test results reporter to use
// possible values: 'dots', 'progress'
// available reporters: https://npmjs.org/browse/keyword/karma-reporter
reporters: ['progress'],

// web server port
port: 9876,

// enable / disable colors in the output (reporters and logs)
colors: true,

// level of logging
// possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
logLevel: config.LOG_INFO,

// enable / disable watching file and executing tests whenever any file changes
autoWatch: false,

// start these browsers
// available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
browsers: ['PhantomJS'],

// Continuous Integration mode
// if true, Karma captures browsers, runs the tests and exits
singleRun: true,

// Concurrency level
// how many browser should be started simultaneous
concurrency: Infinity

Answer Source

Just a guess, but try cleaning the npm cache, removing the node_modules and reinstalling everything from scratch:

$ rm -rf node_modules
$ npm cache clean
$ npm i

$ sudo npm uninstall -g jasmine-core 
$ sudo npm cache clean -f
$ sudo npm i -g jasmine-core 
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