Automatic conversion of .jscsrc files to .eslintrc files

For people coming over from JSCS, it would be nice to have a way to automatically convert their .jscsrc files into equivalent .eslintrc files.

What I have in mind is adding an additional option to --init that is “Convert JSCS configuration file”:

• We could use Polyjuice to do this, and contribute back to Polyjuice to help make it more feature-complete.
• We’d need to figure out what to do about style presets from JSCS. Some of them already have ESLint shareable config equivalents, but I’m guessing a lot of them do not. We might need to do this manually.

Another option would be to instruct people on how to do the conversion themselves using Polyjuice or some other tool, though it seems like the better user experience would be to have this capability as part of ESLint.

Thoughts?

[mgol]

It might be worthwhile to be able to merge existing .jscsrc AND .eslintrc into a final .eslintrc as some people are already using ESLint in conjunction with JSCS. I know I have for some time, in times when JSCS had way more style-related rules than ESLint.

[nzakas]

After thinking about this some more, I wonder if we can get away with just having people use Polyjuice directly. It would mean we don’t have to add anything specifically to ESLint, avoiding another dependency. We would just have to make sure that the documentation called out this step.

Thoughts? @markelog