npm install -g js-beautify

.jsbeautifyrc

{
  "indent_size": 2,
  "indent_char": " ",
  "eol": "\n",
  "indent_level": 0,
  "indent_with_tabs": false,
  "preserve_newlines": true,
  "max_preserve_newlines": 2,
  "jslint_happy": false,
  "space_after_anon_function": false,
  "brace_style": "collapse",
  "keep_array_indentation": false,
  "keep_function_indentation": false,
  "space_before_conditional": true,
  "break_chained_methods": true,
  "eval_code": false,
  "unescape_strings": false,
  "wrap_line_length": 80,
  "wrap_attributes": "auto",
  "wrap_attributes_indent_size": 2,
  "e4x": true,
  "end_with_newline": true
}