Add a .chromeDataDir option to help debugging tests

[dennis-johnson-dev]

This option is useful when running tests in a non-headless Chrome environment. This will allow Chrome to save user preferences between test runs. For example, one thing I often get frustrated with is that Chrome never remembers where I last left the Chrome Dev Tools. With this change, it will be in the same spot upon returning to debug tests. This also applies to other user preferences as well.

I left it as an "opt-in" rather than a default to avoid folks forgetting to add the datadir to their .gitignore file.

I also had trouble installing this package locally. I kept getting a Plugin 'jsx' not found. I'm happy to further test or improve this pr.

Thanks for this awesome tool!

[developit]

What version of node + npm are you running? I've been getting the jsx issue thing on travis and could use any additional information.

[dennis-johnson-dev]

Sure, my env info is:

• node 8.6.0
• npm 5.3.0

I have also tried:

• node 9.3.0
• npm 5.5.1

My guess is that the problem is a dependency shift? I haven't been able to figure out what exactly is missing the plugin either. Could be babel missing the plugin or perhaps the bundler.

Anecdotally, when I npm link microbundle, the problem goes away. 🤔

[dennis-johnson-dev]

Ok, was able to repro (I think). I npm linked mircobundle and then I placed a null in microbundle here - https://github.com/developit/microbundle/blob/master/src/index.js#L229. Then placed a console.log here - https://github.com/developit/microbundle/blob/master/src/cli.js#L50.

Hope that helps debug.

[developit]

Awesome, thanks @songawee that really does help!

[developit]

The build error should be fixed in the latest microbundle.

[dennis-johnson-dev]

Thanks for your help with this! Maybe we could try deleting the travis cache to see if that pulls in the fixed dep? - https://docs.travis-ci.com/user/caching/#Clearing-Caches. I've had success with that in circleci. ¯_(ツ)_/¯

[developit]

Strangely, no caches are listed :/

[developit]

Released in 2.0.0.