webpack preprocessor not running

[jnewman]

I've got my tests setup w/ webpack and coverage preprocessors. These work as expected via CLI, but when I try to run via karma-intellij I get the following error (which makes me think the preprocessor isn't running):

SyntaxError: Use of reserved word 'import'
at http://localhost:9876/base/unit/attributes.spec.js?bf8f6bdd21402ea57b8260880929c7b7742f7d4b:57

Here's the config file I'm trying to use:

https://github.com/krux/prescribe/blob/jnewman-repro-intellij-integration-issue/test/karma-idea.config.js

Any pointers would be helpful. I've got a similar setup w/ coffee script preprocessors that works exactly as planned, so I'm wondering if it's something specific about multiple preprocessors.

For reference, I've attached images of my setup:

IntelliJ details:

IntelliJ IDEA 2016.1.1
Build #IU-145.597, built on March 29, 2016
JRE: 1.8.0_40-release-b132 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o

[segrey]

Thanks, reproduced. Caused by current working directory specified when running karma process.
When running test/karma-idea.config.js in terminal, cwd=/path/to/prescribe. However, karma-intellij sets cwd=/path/to/prescribe/test. I thought karma is cwd-agnostic, but looks like unfortunately it is not true anymore. Possible fix is to add "Working directory" parameter to Karma run configuration dialog. Any other ideas how to solve this cwd-problem?

[segrey]

Tried to create prescribe/karma.conf.js with this content

module.exports = require('./test/karma-idea.config');

And it fails in Terminal when running as ./node_modules/karma/bin/karma start karma.conf.js. No ideas why.
At the same time ./node_modules/karma/bin/karma start ./test/karma-idea.config.js runs correctly. Just curious what I'm missing?

[jnewman]

I changed the js file to:

require('babel-register');
require('process');
process.chdir('..');
module.exports = require('./karma-coverage.config.babel');

[jnewman]

Seems to work like that!

Maybe this is just adding that to the docs 😄

[jnewman]

Thanks so much for the help on this!

[segrey]

Great! It works for me too. However, I'm still in the dark why this doesn't work, prescribe/karma.conf.js:

require('babel-register');
module.exports = require('./test/karma-coverage.config.babel');

[jnewman]

I think b/c webpack gets confused about which directory it's in.

[Macavity]

I got the same problem using browserify instead of webpack, thus the workaround doesn't work for me. Any ideas on how to make karma use the configured "base" as work directory for running single specs?

[segrey]

@Macavity Not sure I understand your problem fully. Could you please provide mode details about it in a separate issue?

[Macavity]

Sure, will do.