[reporter.remap-istanbul]: { Error: EACCES: permission denied, mkdir ‘/(webpack)’
I have reproduced this error using karma-remap-istanbul and karma-coverage to show the source maps of my Webpack compiled build.
The error is talkative, it tells that the script can’t create a folder in `/` system root folder. Of course it’s supposed to create those report folders starting from a relative path. To enable it you should add the following option in your webpack.config.js
file under the group output.
devtoolModuleFilenameTemplate: '[resource-path]'
This way we change the naming policy of the source-maps ad we won’t encounter permissions errors.