Features:

• Linting #3
• Formatting #2
• Syntax Highlighting [#4]
• Snippets
• Jump to definition

Rules:

• Indentation
  • Feature - 0
  • User story - indent x 1
  • Rule - indent x 1
  • Background, Scenario - indent x 1 or indent x 2
  • Steps, Examples - indent x 2 or indent x 3
  • Data table, Example table, Doc string - indent x 3 or indent x 4
  • Tags, Comments - based on Keyword below
• New line to separate Feature, Rule, Background, Scenario, Scenario Outline
• A space between # and comment line. E.g. # some comment
• Table format
• No extra spaces at the end of the line
• New line at the end of the file

Sample formatted text (dots . represent space):
where; indent = 2 spaces

@webui
Feature: login feature
..As a user
..I want to login
..So that I can view the dashboard

..Rule: Valid login

....# we setup the app here
....Background:
......Given some setup has been done

....@validlogin
....Scenario: login
......When the user logs in with following data:
........| username | password |
........| Alice    |  1234    |
......Then the user should see the dashboard
<\n>

OR

@webui
Feature: login feature
..As a user
..I want to login
..So that I can view the dashboard

..Background:
....Given some setup has been done

..@validlogin
..Scenario: login
....When the user logs in with "<username>" and "<password>"
....Then the user should see the dashboard
....Examples:
......| username | password |
......| Alice    |  1234    |
<\n>

The key words MUST, MUST NOT, REQUIRED, SHALL, SHALL NOT, SHOULD, SHOULD NOT, RECOMMENDED, MAY, and OPTIONAL in this document are to be interpreted as described in RFC 2119.

MUST:

• have only one Feature keyword in a file
• start with Feature name (No other keywords before Feature name except comments and tags)
• NOT have any invalid lines (lines that don't make sense to the cucumber-js)

SHOULD:

• have user story
• have only Given steps in Background
• have Given or When step as the beginning step
• have And step in place of repeated steps
• have Scenario or Scenario Outline description