markdown-toc   

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

Please consider following this project's author, Jon Schlinkert, and consider starring the project to show your :heart: and support.

- 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

_(TOC generated by verb using markdown-toc)_

Install

Install with npm:

``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 to add your logo to this README, or any of my other projects

Gold Sponsors

| |
|:---:|
| 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
- 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

_(TOC generated by verb using 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 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

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

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

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Use as a 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
- BBB
- CCC
`

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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 } ]
`

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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
- xyz


abc

This is a b c.

xyz

This is x y z.
`

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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

$3

Append a string to the end of the TOC.

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

$3

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
`

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Type: Function

Default: Basic non-word character replacement.

Example

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

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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.

$3

Type: Number

Default: 6

Use headings whose depth is at most maxdepth.

$3

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.

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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.

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, 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:

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

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You might also be interested in these projects:

* gfm-code-blocks: Extract gfm (GitHub Flavored Markdown) fenced code blocks from a string. | homepage fenced code blocks from a string.")
* markdown-link: Micro util for generating a single markdown link. | homepage
* markdown-utils: Tiny helpers for creating consistenly-formatted 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

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| Commits | Contributor |
| --- | --- |
| 199 | jonschlinkert |
| 9 | doowb |
| 4 | dbooth-boston |
| 3 | sapegin |
| 3 | Marsup |
| 2 | dvcrn |
| 2 | maxogden |
| 2 | twang2218 |
| 2 | zeke |
| 1 | Vortex375 |
| 1 | chendaniely |
| 1 | Daniel-Mietchen |
| 1 | Feder1co5oave |
| 1 | garygreen |
| 1 | TehShrike |
| 1 | citizenmatt |
| 1 | mgroenhoff |
| 1 | rafaelsteil |
| 1 | RichardBradley |
| 1 | sethvincent |
| 1 | shanehughes3 |
| 1 | bcho |
| 1 | lu22do |

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Jon Schlinkert

* GitHub Profile
* Twitter Profile
* LinkedIn Profile

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Copyright © 2023, Jon Schlinkert.
Released under the MIT License.

*

_This file was generated by verb-generate-readme, v0.8.0, on July 12, 2023._