ReferenceError: MOCHA is not defined

[senseysensor]

After upgrading from karma 0.8 to canary version (0.9.3) using command sudo npm install -g karma@0.9 I have following error:
ERROR [config]: Invalid config file!
[ReferenceError: MOCHA is not defined]
ReferenceError: MOCHA is not defined
And then traceback.

What am I doing wrong? everything worked great with 0.8 version. I cannot find any information about the issue in the google.
I also heard a lot of things have been changed in 0.9x versions - where can I find information about that?
thanks in advance.

[vojtajina]

Weird, it should give you a warning with ana advice, how to migrate. Can you try the latest canary (0.9.4) ? That should even work and give a warning, how to update the config file.

The config file syntax has changed. Once this is in stable release, the docs will be updated as well.

This is the syntax format you need:

module.exports = function(config) {
  config.set({
    frameworks: ['mocha'],
    files: [...],
    // ....
  });
};