Webpack + karma misses jest plugins

I’m submitting a bug report

• Library Version: 0.31.3

Please tell us about your environment:

• Operating System: Linux (Ubuntu)

• Node Version: 7.7.3

• NPM Version: 5.0.3

• Browser: all

• Language: all

• Loader/bundler: Webpack

Current behavior: Choosing the webpack bundler with karma for testing, one gets two errors for missing jest modules on running au karma:

ERROR in ./test/karma-bundle.js
Module not found: Error: Can't resolve 'jest-jasmine2/jasmine-async' in '/home/shoff/workspaces/awk/test'
 @ ./test/karma-bundle.js 3:0-77

ERROR in ./test/karma-bundle.js
Module not found: Error: Can't resolve 'jest-matchers' in '/home/shoff/workspaces/awk/test'
 @ ./test/karma-bundle.js 52:15-39

I tested this with a fresh project both for babel and typescript. Installing jest-matchers took care of the second error, but npm i --save-dev jest-jasmine2 didn’t do the trick for jest-jasmine2/jasmine-async.

• What is the expected behavior?

The au karma command should run without errors on a newly created webpack setup.

[s-hoff]

Adding jest-matchers to the dev dependencies should do the trick. Thats what fixed it for me.

For those not running 32.0 and getting the jest-jasmine2/jasmine-async error: Go to your karma-bundle.js and change the import from 'jest-jasmine2/jasmine-async' to 'jest-jasmine2/jasmine_async'.

[JeroenVinke]

@s-hoff thanks for the update. I wonder if we can separate the karma and jest setups entirely so that when you only need karma you don’t need to install any jest libraries