karma start Cannot find module 'jasmine-core'

Question

I was getting the following error when I ran "karma start"

module.js:340 throw err; ^ Error: Cannot find module 'jasmine-core' at Function.Module._resolveFilename (module.js:338:15) at Function.require.resolve (module.js:384:19) at initJasmine (/usr/lib/node_modules/karma-jasmine/lib/index.js:8:42) at Array.invoke [as 0] (/usr/lib/node_modules/karma/node_modules/di/lib/injector.js:75:15) at get (/usr/lib/node_modules/karma/node_modules/di/lib/injector.js:48:43) at /usr/lib/node_modules/karma/lib/server.js:137:20 at Array.forEach (native) at Server._start (/usr/lib/node_modules/karma/lib/server.js:136:21) at invoke (/usr/lib/node_modules/karma/node_modules/di/lib/injector.js:75:15) at Server.start (/usr/lib/node_modules/karma/lib/server.js:101:18) at Object.exports.run (/usr/lib/node_modules/karma/lib/cli.js:231:26) at Object. (/usr/lib/node_modules/karma/bin/karma:3:23) at Module._compile (module.js:456:26) at Object.Module._extensions..js (module.js:474:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12)

Does anyone know why this is happening? I was running karma in a VM. I tried several npm install commands and nothing worked. After I shutdown my machine for the night and came back the next day the problem went away and everything is working again. So, I'm not blocked anymore.. Anyone have some thoughts on what could be happening?

Solution 1

I solved using npm install jasmine-core --save-dev

Solution 2

try install jasmine-core globally (Jasmine on NPM). use npm install -g jasmine-core

Solution 3

Even with karma and karma-jasmine installed in the local project's node_modules you must still npm install jasmine.

So for a fresh Karma project:

1. npm install karma karma-jasmine jasmine to install the required modules locally.

Optionally add --save-dev to write to your package.json. Note these do not need to be -g globally installed here.

2. karma start

This step requires you to have Karma installed globally (sudo npm install -g karma).

Solution 4

Navigate to folder:

cd node_modules\karma-jasmine

Run:

npm install

This should download the required dependencies and fix the issue.

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Comments

[MBielski]

Something probably changed your system path and the restart loaded it fresh.

[Leon Gaban]

Where you able to get your problem solved? stackoverflow.com/questions/35993875/…

[Henke]

Possibly related: https://stackoverflow.com/questions/33870520/?

[Leon Gaban]

I tried both these answers, but still getting this error, mind a look? stackoverflow.com/questions/35993875/…

[Yumiko]

npm install jasmine-core --save-dev this is better than global

[Stephan Bijzitter]

Wow... that is just bad. Works though.

[Ziggler]

Solved my issue

[John Deighan]

Rebooting did not help, so I'm completely stuck!

[John Deighan]

Solved (for me, at least): I had run 'npm install -g karma' to get the karma command, but had to uninstall that, then run 'npm install -g karma-cli'. After that, 'karma start' works!