mdast-lint-empty-sections

This mdast-lint rule was created for free-programming-books-lint to enforce free-programming-books formatting guidelines.

This rule checks that every ([#]+)title has some content. This content can be anything: a lower-level title, a higher-level title, text, list, etc. It will only complain if you have a n-level title without content followed by another n-level title.

<!-- Invalid -->
 
# A
 
## B (this section is empty!)
 
## C
 
<!-- Valid -->
 
# A
 
## C

Using the rule

Via .mdastrc

npm install -g mdast
npm install -g mdast-lint
npm install mdast-lint-empty-sections # local install! 

Then, set up your .mdastrc:

{
  "plugins": {
    "mdast-lint": {
      "external": ["mdast-lint-empty-sections"]
    }
  }
}

Now you can use the following command to run the lint:

mdast --no-stdout xxx.md

Via CLI

npm install -g mdast
npm install -g mdast-lint
npm install -g mdast-lint-empty-sections # global install! 
mdast --no-stdout -u mdast-lint="external:[\"mdast-lint-empty-sections\"]" xxx.md

Note that the lint=<lint_options> option only works with mdast >= 1.1.1.

This README.md is based on this one by @chcokr (MIT).