An editorconfig that tech and front-end people can all agree on

.editorconfig

# top-most EditorConfig file
root = true

[*]

# We recommend you to keep these unchanged
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true

[FrontEndSrc/*]

end_of_line = lf
indent_style = space
indent_size = 4

[*.md]
trim_trailing_whitespace = false

All the options can be found here: https://github.com/editorconfig/editorconfig/wiki/EditorConfig-Properties