markdown-toc

Generate a markdown TOC (table of contents) with Remarkable.

Install
CLI
Highlights
Usage
API
Options
About

(TOC generated by verb using markdown-toc)

Install

Install with npm:

$ npm install --save markdown-toc

CLI

Usage: markdown-toc [options] <input>

  input:        The Markdown file to parse for table of contents,
                or "-" to read from stdin.

  -i:           Edit the <input> file directly, injecting the TOC at &lt;!-- toc --&gt;
                (Without this flag, the default is to print the TOC to stdout.)

  --json:       Print the TOC in JSON format

  --append:     Append a string to the end of the TOC

  --bullets:    Bullets to use for items in the generated TOC
                (Supports multiple bullets: --bullets "*" --bullets "-" --bullets "+")
                (Default is "*".)

  --maxdepth:   Use headings whose depth is at most maxdepth
                (Default is 6.)

  --no-firsth1: Include the first h1-level heading in a file

  --no-stripHeadingTags: Do not strip extraneous HTML tags from heading
                         text before slugifying

Highlights

Features

Can optionally be used as a remarkable plugin
Returns an object with the rendered TOC (on content), as well as a json property with the raw TOC object, so you can generate your own TOC using templates or however you want
Works with repeated headings
Uses sane defaults, so no customization is necessary, but you can if you need to.
filter out headings you don't want
Improve the headings you do want
Use a custom slugify function to change how links are created

Safe!

Won't mangle markdown in code examples in gfm code blocks that other TOC generators mistake as being actual headings (this happens when markdown headings are show in examples, meaning they arent' actually headings that should be in the toc. Also happens with yaml and coffee-script comments, or any comments that use #)
Won't mangle front-matter, or mistake front-matter properties for headings like other TOC generators

Usage

var toc = require('markdown-toc');

toc('# One\n\n# Two').content;
// Results in:
// - [One](#one)
// - [Two](#two)

To allow customization of the output, an object is returned with the following properties:

content {String}: The generated table of contents. Unless you want to customize rendering, this is all you need.
highest {Number}: The highest level heading found. This is used to adjust indentation.
tokens {Array}: Headings tokens that can be used for custom rendering

API

toc.plugin

Use as a remarkable plugin.

var Remarkable = require('remarkable');
var toc = require('markdown-toc');

function render(str, options) {
  return new Remarkable()
    .use(toc.plugin(options)) // <= register the plugin
    .render(str);
}

Usage example

var results = render('# AAA\n# BBB\n# CCC\nfoo\nbar\nbaz');

Results in:

- [AAA](#aaa)
- [BBB](#bbb)
- [CCC](#ccc)

toc.json

Object for creating a custom TOC.

toc('# AAA\n## BBB\n### CCC\nfoo').json;

// results in
[ { content: 'AAA', slug: 'aaa', lvl: 1 },
  { content: 'BBB', slug: 'bbb', lvl: 2 },
  { content: 'CCC', slug: 'ccc', lvl: 3 } ]

toc.insert

Insert a table of contents immediately after an opening  code comment, or replace an existing TOC if both an opening comment and a closing comment () are found.

(This strategy works well since code comments in markdown are hidden when viewed as HTML, like when viewing a README on GitHub README for example).

Example

<!-- toc -->
- old toc 1
- old toc 2
- old toc 3
<!-- tocstop -->

## abc
This is a b c.

## xyz
This is x y z.

Would result in something like:

<!-- toc -->
- [abc](#abc)
- [xyz](#xyz)
<!-- tocstop -->

## abc
This is a b c.

## xyz
This is x y z.

Utility functions

As a convenience to folks who wants to create a custom TOC, markdown-toc's internal utility methods are exposed:

var toc = require('markdown-toc');

toc.bullets(): render a bullet list from an array of tokens
toc.linkify(): linking a heading content string
toc.slugify(): slugify a heading content string
toc.strip(): strip words or characters from a heading content string

Example

var result = toc('# AAA\n## BBB\n### CCC\nfoo');
var str = '';

result.json.forEach(function(heading) {
  str += toc.linkify(heading.content);
});

Options

options.append

Append a string to the end of the TOC.

toc(str, {append: '\n_(TOC generated by Verb)_'});

options.filter

Type: Function

Default: undefined

Params:

str {String} the actual heading string
ele {Objecct} object of heading tokens
arr {Array} all of the headings objects

Example

From time to time, we might get junk like this in our TOC.

[.aaa([foo], ...) another bad heading](#-aaa--foo--------another-bad-heading)

Unless you like that kind of thing, you might want to filter these bad headings out.

function removeJunk(str, ele, arr) {
  return str.indexOf('...') === -1;
}

var result = toc(str, {filter: removeJunk});
//=> beautiful TOC

options.slugify

Type: Function

Default: Basic non-word character replacement.

Example

var str = toc('# Some Article', {slugify: require('uslug')});

options.bullets

Type: String|Array

Default: *

The bullet to use for each item in the generated TOC. If passed as an array (['*', '-', '+']), the bullet point strings will be used based on the header depth.

options.maxdepth

Type: Number

Default: 6

Use headings whose depth is at most maxdepth.

options.firsth1

Type: Boolean

Default: true

Exclude the first h1-level heading in a file. For example, this prevents the first heading in a README from showing up in the TOC.

options.stripHeadingTags

Type: Boolean

Default: true

Strip extraneous HTML tags from heading text before slugifying. This is similar to GitHub markdown behavior.

About

Related projects

gfm-code-blocks: Extract gfm (GitHub Flavored Markdown) fenced code blocks from a string. | homepage
markdown-link: Micro util for generating a single markdown link. | homepage
markdown-utils: Micro-utils for creating markdown snippets. | homepage
pretty-remarkable: Plugin for prettifying markdown with Remarkable using custom renderer rules. | homepage
remarkable: Markdown parser, done right. 100% Commonmark support, extensions, syntax plugins, high speed - all in… more | homepage

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.

Contributors

Commits	Contributor
196	jonschlinkert
4	stefanwalther
3	Marsup
2	dvcrn
2	maxogden
2	twang2218
2	angrykoala
2	zeke
1	Vortex375
1	owzim
1	chendaniely
1	Daniel-Mietchen
1	Feder1co5oave
1	garygreen
1	TehShrike
1	citizenmatt
1	rafaelsteil
1	RichardBradley
1	sethvincent
1	lu22do

Building docs

(This project's readme.md is generated by verb, please don't edit the readme directly. Any changes to the readme must be made in the .verb.md readme template.)

To generate the readme, run the following command:

$ npm install -g verbose/verb#dev verb-generate-readme && verb

Running tests

Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:

$ npm install && npm test

Author

Jon Schlinkert

License

This file was generated by verb-generate-readme, v0.6.0, on September 19, 2017.

Current Tags

1.2.0 ... latest (7 years ago)

markdown-toc

Table of Contents

Install

CLI

Highlights

Usage

API

toc.plugin

toc.json

toc.insert

Utility functions

Options

options.append

options.filter

options.slugify

options.bullets

options.maxdepth

options.firsth1

options.stripHeadingTags

About

Related projects

Contributing

Contributors

Building docs

Running tests

Author

License

Current Tags

47 Versions