New features: work with `editorconfig`

I usually use eslint and editorconfig together, So I need a option property for these rules, let them use configuration of editorconfig

• indent
• no-trailing-spaces
• eol-last

I hope this option property is enabled by default, If configuration property of editorconfig is missing, please use the same logic as before.

see https://www.npmjs.com/package/editorconfig

[platinumazure]

I would love to see eslint --init support creating a config from .editorconfig file. Not sure we want to couple normal execution to this, though. Another thought, maybe a third-party tool could detect differences between ESLint and .editorconfig and help keep ESLint in sync.

[nzakas]

I’m not clear on what is being requested here, can someone please summarize?

As a note: I don’t think it’s a good idea for ESLint to either consume or produce configuration files other than its own. If you want to use a different type of configuration file to populate an ESLint configuration file, your best bet is to use a JavaScript ESLint configuration file, read in the editorconfig file, and populate whatever options you want.