Markdown 2 Json

A functional library that takes a markdown body; and tries to create a JSON representation of the document.

Supports

• Headings
• Lists
• Paragraphs

Usage

Install:

• npm install @connected-web/md2json

const md2json = require('@connected-web/md2json')
const fs = require('fs')

const filename = 'README.md'
const md = fs.readFileSync(filename, 'utf8')
const json = md2json(filename, md)

console.log('Markdown to Json:', json)

Examples

• Default example output: examples/example-output.json
• Default tokens output: examples/example-output-tokens.json
• json2md tokens output: examples/example-output-json2md.json
• Test output: examples/test-output.json

Source only API

md2json(markdown)

Title and source API

md2json(title, markdown)

Options object API

md2json({
  title: 'README.md',
  markdown: '# Heading\n\nContent'
})

Option : title

The top level section of the JSON output.

Option : markdown | md

The text string representing the markdown to be converted to JSON

Option : outputFormat

The type of formatting to output.

• { outputFormat: 'default' } : Empty string will default to default - a nested structure of markdown as JSON
• { outputFormat: 'json2md' } : Token format compatable with IonicaBizau/json2md (npm: json2md)

Tokens

const md2json = require('@connected-web/md2json')
const tokens = md2json.tokens('# Heading\n\nContent\n\n## Heading 1.1')
console.log(tokens)

Output:

[
  {
    "name": "h1",
    "text": "Heading"
  },
  {
    "name": "p",
    "text": "Content"
  },
  {
    "name": "h2",
    "text": "Heading 1.1"
  }
]

Tokens for json2md

Instead of using the outputFormat: json2md option - which is compatable with IonicaBizau/json2md (npm: json2md), you can directly call this method:

const md2json = require('@connected-web/md2json')
const tokens = md2json.json2mdTokens('# Heading\n\nContent\n\n## Heading 1.1')
console.log(tokens)

Output:

[
  {
    "h1": "Heading"
  },
  {
    "p": "Content"
  },
  {
    "h2": "Heading 1.1"
  }
]

You can then feed these tokens back into json2md to create markdown again.

Not all formats and formatting are supported; this isn't guarenteed as a fully backwards compatable transformation - but please raise an issue with an example.

Approach

• Format parameters
• Render Markdown as HTML
• Create DOM from Markdown
• Create Tokens in the form: { name: el.tagName, text: el.text }
• Parse Tokens into Hierarchy
• Return JSON hierarchy

Known Issues

• Inline formats not fully supported, e.g.:
  • bold and italic text will be reduced to plain text
  • the markdown equivalent of a <code>code block</code> will duplicate the code text into a new block

Licenses

Released under ISC.

Dependencies

• marked
• cheerio

Development tools

• mocha
• chai
• standard

Changelog

1.3.0

• Add options to support json2md compatible output
• Support a broader range of HTML tokens, including blockquote, img, code, table, tr, th, td

1.2.0

• Fix failing tests based on marked interface
• Add PR checking to project

1.1.0

• Add .tokens(markdown) method to API

1.0.0

• First version ready for release
• Not perfect, but hopefully something people can work with