Found this thread after some Google-fu. So, are you guys working on it? or is it never coming?
By the way, eslint (and other linters) lint files for coding style issues and what not... after the code's been saved. The purpose of .editorconfig is to make sure the editor knows my settings (tab length, spaces vs tabs etc). This allows you to have different configurations for different files (for example: 4 spaces when you press tab in a html file, 2 when you do it in a js file)