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https://github.com/jonschlinkert/markdown-toc

API and CLI for generating a markdown TOC (table of contents) for a README or any markdown files. Uses Remarkable to parse markdown. Used by NASA/openmct, Prisma, Joi, Mocha, Sass, Prettier, Orbit DB, FormatJS, Raneto, hapijs/code, webpack-flow, docusaurus, release-it, ts-loader, json-server, reactfire, bunyan, husky, react-easy-state, react-snap, chakra-ui, carbon, alfresco, repolinter, Assemble, Verb, and thousands of other projects.
https://github.com/jonschlinkert/markdown-toc

javascript jonschlinkert markdown markdown-toc md navigation node nodejs project readme remarkable table-of-contents toc toc-generator

Last synced: about 2 months ago
JSON representation

Host: GitHub
URL: https://github.com/jonschlinkert/markdown-toc
Owner: jonschlinkert
License: mit
Created: 2013-11-08T19:37:06.000Z (almost 11 years ago)
Default Branch: master
Last Pushed: 2024-04-10T21:17:21.000Z (5 months ago)
Last Synced: 2024-05-01T22:13:47.785Z (5 months ago)
Topics: javascript, jonschlinkert, markdown, markdown-toc, md, navigation, node, nodejs, project, readme, remarkable, table-of-contents, toc, toc-generator
Language: JavaScript
Homepage: https://github.com/jonschlinkert
Size: 273 KB
Stars: 1,595
Watchers: 24
Forks: 699
Open Issues: 86
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
- License: LICENSE

Awesome Lists containing this project

keep-it-txt - markdown-it-toc
awesome-ccamel - jonschlinkert/markdown-toc - API and CLI for generating a markdown TOC (table of contents) for a README or any markdown files. Uses Remarkable to parse markdown. Used by NASA/openmct, Prisma, Joi, Mocha, Sass, Prettier, Orbit DB, FormatJS, Raneto, hapijs/code, webpack-flow, docusaurus, release-it, ts-loader, json-server, reactfire, bunyan, husky, react-easy-state, react-snap, chakra-ui, carbon, alfresco, repolinter, Assemble, Verb, and thousands of other projects. (JavaScript)
awesome-bytecode - markdown-toc
jimsghstars - jonschlinkert/markdown-toc - API and CLI for generating a markdown TOC (table of contents) for a README or any markdown files. Uses Remarkable to parse markdown. Used by NASA/openmct, Prisma, Joi, Mocha, Sass, Prettier, Orbit DB, (JavaScript)

README

        # markdown-toc [![NPM version](https://img.shields.io/npm/v/markdown-toc.svg?style=flat)](https://www.npmjs.com/package/markdown-toc) [![NPM monthly downloads](https://img.shields.io/npm/dm/markdown-toc.svg?style=flat)](https://npmjs.org/package/markdown-toc) [![NPM total downloads](https://img.shields.io/npm/dt/markdown-toc.svg?style=flat)](https://npmjs.org/package/markdown-toc)

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

Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support.

- [Highlights](#highlights)

- [Usage](#usage)

- [API](#api)

  * [toc.plugin](#tocplugin)

  * [toc.json](#tocjson)

  * [toc.insert](#tocinsert)

  * [Utility functions](#utility-functions)

- [Options](#options)

  * [options.append](#optionsappend)

  * [options.filter](#optionsfilter)

  * [options.slugify](#optionsslugify)

  * [options.bullets](#optionsbullets)

  * [options.maxdepth](#optionsmaxdepth)

  * [options.firsth1](#optionsfirsth1)

  * [options.stripHeadingTags](#optionsstripheadingtags)

- [About](#about)

_(TOC generated by [verb](https://github.com/verbose/verb) using [markdown-toc](https://github.com/jonschlinkert/markdown-toc))_

## Install

Install with [npm](https://www.npmjs.com/):

```sh

$ npm install --save markdown-toc

```

# Sponsors

Thanks to the following companies, organizations, and individuals for supporting the ongoing maintenance and development of markdown-toc! [Become a Sponsor](https://github.com/sponsors/jonschlinkert) to add your logo to this README, or any of [my other projects](https://github.com/jonschlinkert?tab=repositories&q=&type=&language=&sort=stargazers)

## Gold Sponsors

| [](https://jaake.tech/) |

|:---:|

| [https://jaake.tech/](https://jaake.tech/) |




## Quick Start

Assuming you want to add a TOC to README.md:

1. `$ npm install -g markdown-toc`

2. Edit README.md and insert the following line where you want the TOC inserted:
``

3. `$ markdown-toc -i README.md`

## CLI

```

Usage: markdown-toc [options] 

  input:        The Markdown file to parse for table of contents,

                or "-" to read from stdin.

  -i:           Edit the  file directly, injecting the TOC at - [Highlights](#highlights)

- [Usage](#usage)

- [API](#api)

  * [toc.plugin](#tocplugin)

  * [toc.json](#tocjson)

  * [toc.insert](#tocinsert)

  * [Utility functions](#utility-functions)

- [Options](#options)

  * [options.append](#optionsappend)

  * [options.filter](#optionsfilter)

  * [options.slugify](#optionsslugify)

  * [options.bullets](#optionsbullets)

  * [options.maxdepth](#optionsmaxdepth)

  * [options.firsth1](#optionsfirsth1)

  * [options.stripHeadingTags](#optionsstripheadingtags)

- [About](#about)

_(TOC generated by [verb](https://github.com/verbose/verb) using [markdown-toc](https://github.com/jonschlinkert/markdown-toc))_;

                (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

  --indent:     Provide the indentation to use - defaults to '  '

                (to specify a tab, use the bash-escaped $'\t')

```

## Highlights

**Features**

* Can optionally be used as a [remarkable](https://github.com/jonschlinkert/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](https://gist.github.com/jonschlinkert/ac5d8122bfaaa394f896)

* Uses sane defaults, so no customization is necessary, but you can if you need to.

* [filter](#filter-headings) out headings you don't want

* [Improve](#titleize) the headings you do want

* Use a custom [slugify](#optionsslugify) 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

```js

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](https://github.com/jonschlinkert/remarkable) plugin.

```js

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**

```js

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.

```js

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**

```

- old toc 1

- old toc 2

- old toc 3

## abc

This is a b c.

## xyz

This is x y z.

```

Would result in something like:

```

- [abc](#abc)

- [xyz](#xyz)

## 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:

```js

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**

```js

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.

```js

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.

```js

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**

```js

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

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).

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:

```sh

$ npm install && npm test

```

Building docs

_(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_

To generate the readme, run the following command:

```sh

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

```

### Related projects

You might also be interested in these projects:

* [gfm-code-blocks](https://www.npmjs.com/package/gfm-code-blocks): Extract gfm (GitHub Flavored Markdown) fenced code blocks from a string. | [homepage](https://github.com/jonschlinkert/gfm-code-blocks "Extract gfm (GitHub Flavored Markdown) fenced code blocks from a string.")

* [markdown-link](https://www.npmjs.com/package/markdown-link): Micro util for generating a single markdown link. | [homepage](https://github.com/jonschlinkert/markdown-link "Micro util for generating a single markdown link.")

* [markdown-utils](https://www.npmjs.com/package/markdown-utils): Tiny helpers for creating consistenly-formatted markdown snippets. | [homepage](https://github.com/jonschlinkert/markdown-utils "Tiny helpers for creating consistenly-formatted markdown snippets.")

* [pretty-remarkable](https://www.npmjs.com/package/pretty-remarkable): Plugin for prettifying markdown with Remarkable using custom renderer rules. | [homepage](https://github.com/jonschlinkert/pretty-remarkable "Plugin for prettifying markdown with Remarkable using custom renderer rules.")

* [remarkable](https://www.npmjs.com/package/remarkable): Markdown parser, done right. 100% Commonmark support, extensions, syntax plugins, high speed - all in… [more](https://github.com/jonschlinkert/remarkable) | [homepage](https://github.com/jonschlinkert/remarkable "Markdown parser, done right. 100% Commonmark support, extensions, syntax plugins, high speed - all in one.")

### Contributors

| **Commits** | **Contributor** |

| --- | --- |

| 199 | [jonschlinkert](https://github.com/jonschlinkert) |

| 9   | [doowb](https://github.com/doowb) |

| 4   | [dbooth-boston](https://github.com/dbooth-boston) |

| 3   | [sapegin](https://github.com/sapegin) |

| 3   | [Marsup](https://github.com/Marsup) |

| 2   | [dvcrn](https://github.com/dvcrn) |

| 2   | [maxogden](https://github.com/maxogden) |

| 2   | [twang2218](https://github.com/twang2218) |

| 2   | [zeke](https://github.com/zeke) |

| 1   | [Vortex375](https://github.com/Vortex375) |

| 1   | [chendaniely](https://github.com/chendaniely) |

| 1   | [Daniel-Mietchen](https://github.com/Daniel-Mietchen) |

| 1   | [Feder1co5oave](https://github.com/Feder1co5oave) |

| 1   | [garygreen](https://github.com/garygreen) |

| 1   | [TehShrike](https://github.com/TehShrike) |

| 1   | [citizenmatt](https://github.com/citizenmatt) |

| 1   | [mgroenhoff](https://github.com/mgroenhoff) |

| 1   | [rafaelsteil](https://github.com/rafaelsteil) |

| 1   | [RichardBradley](https://github.com/RichardBradley) |

| 1   | [sethvincent](https://github.com/sethvincent) |

| 1   | [shanehughes3](https://github.com/shanehughes3) |

| 1   | [bcho](https://github.com/bcho) |

| 1   | [lu22do](https://github.com/lu22do) |

### Author

**Jon Schlinkert**

* [GitHub Profile](https://github.com/jonschlinkert)

* [Twitter Profile](https://twitter.com/jonschlinkert)

* [LinkedIn Profile](https://linkedin.com/in/jonschlinkert)

### License

Copyright © 2023, [Jon Schlinkert](https://github.com/jonschlinkert).

Released under the [MIT License](LICENSE).

***

_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on July 12, 2023._