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    @forked/turndown

    4.0.4 • Public • Published

    !!!!!!!!!!!!!!!! THIS IS A FORK. !!!!!!!!!!!!!!!!

    You probably DO NOT want to use this unless you know what you are doing.

    This fork of turndown to was created to work better with TypeDoc, view this PR for more details: https://github.com/domchristie/turndown/pull/226

    Turndown

    Build Status

    Convert HTML into Markdown with JavaScript.

    to-markdown has been renamed to Turndown. See the migration guide for details.

    Installation

    npm:

    npm install turndown
    

    Browser:

    <script src="https://unpkg.com/turndown/dist/turndown.js"></script>

    For usage with RequireJS, UMD versions are located in lib/turndown.umd.js (for Node.js) and lib/turndown.browser.umd.js for browser usage. These files are generated when the npm package is published. To generate them manually, clone this repo and run npm run build.

    Usage

    // For Node.js
    var TurndownService = require('turndown')
     
    var turndownService = new TurndownService()
    var markdown = turndownService.turndown('<h1>Hello world!</h1>')

    Turndown also accepts DOM nodes as input (either element nodes, document nodes, or document fragment nodes):

    var markdown = turndownService.turndown(document.getElementById('content'))

    Options

    Options can be passed in to the constructor on instantiation.

    Option Valid values Default
    headingStyle setext or atx setext
    hr Any Thematic break * * *
    bulletListMarker -, +, or * *
    codeBlockStyle indented or fenced indented
    fence ``` or ~~~ | ```
    emDelimiter _ or * _
    strongDelimiter ** or __ **
    linkStyle inlined or referenced inlined
    linkReferenceStyle full, collapsed, or shortcut full

    Advanced Options

    Option Valid values Default
    blankReplacement rule replacement function See Special Rules below
    keepReplacement rule replacement function See Special Rules below
    defaultReplacement rule replacement function See Special Rules below

    Methods

    addRule(key, rule)

    The key parameter is a unique name for the rule for easy reference. Example:

    turndownService.addRule('strikethrough', {
      filter: ['del', 's', 'strike'],
      replacement: function (content) {
        return '~' + content + '~'
      }
    })

    addRule returns the TurndownService instance for chaining.

    See Extending with Rules below.

    keep(filter)

    Determines which elements are to be kept and rendered as HTML. By default, Turndown does not keep any elements. The filter parameter works like a rule filter (see section on filters belows). Example:

    turndownService.keep(['del', 'ins'])
    turndownService.turndown('<p>Hello <del>world</del><ins>World</ins></p>') // 'Hello <del>world</del><ins>World</ins>'

    This will render <del> and <ins> elements as HTML when converted.

    keep can be called multiple times, with the newly added keep filters taking precedence over older ones. Keep filters will be overridden by the standard CommonMark rules and any added rules. To keep elements that are normally handled by those rules, add a rule with the desired behaviour.

    keep returns the TurndownService instance for chaining.

    remove(filter)

    Determines which elements are to be removed altogether i.e. converted to an empty string. By default, Turndown does not remove any elements. The filter parameter works like a rule filter (see section on filters belows). Example:

    turndownService.remove('del')
    turndownService.turndown('<p>Hello <del>world</del><ins>World</ins></p>') // 'Hello World'

    This will remove <del> elements (and contents).

    remove can be called multiple times, with the newly added remove filters taking precedence over older ones. Remove filters will be overridden by the keep filters, standard CommonMark rules, and any added rules. To remove elements that are normally handled by those rules, add a rule with the desired behaviour.

    remove returns the TurndownService instance for chaining.

    use(plugin|array)

    Use a plugin, or an array of plugins. Example:

    // Import plugins from turndown-plugin-gfm
    var turndownPluginGfm = require('turndown-plugin-gfm')
    var gfm = turndownPluginGfm.gfm
    var tables = turndownPluginGfm.tables
    var strikethrough = turndownPluginGfm.strikethrough
     
    // Use the gfm plugin
    turndownService.use(gfm)
     
    // Use the table and strikethrough plugins only
    turndownService.use([tables, strikethrough])

    use returns the TurndownService instance for chaining.

    See Plugins below.

    Extending with Rules

    Turndown can be extended by adding rules. A rule is a plain JavaScript object with filter and replacement properties. For example, the rule for converting <p> elements is as follows:

    {
      filter: 'p',
      replacement: function (content) {
        return '\n\n' + content + '\n\n'
      }
    }

    The filter selects <p> elements, and the replacement function returns the <p> contents separated by two new lines.

    filter String|Array|Function

    The filter property determines whether or not an element should be replaced with the rule's replacement. DOM nodes can be selected simply using a tag name or an array of tag names:

    • filter: 'p' will select <p> elements
    • filter: ['em', 'i'] will select <em> or <i> elements

    Alternatively, the filter can be a function that returns a boolean depending on whether a given node should be replaced. The function is passed a DOM node as well as the TurndownService options. For example, the following rule selects <a> elements (with an href) when the linkStyle option is inlined:

    filter: function (node, options) {
      return (
        options.linkStyle === 'inlined' &&
        node.nodeName === 'A' &&
        node.getAttribute('href')
      )
    }

    replacement Function

    The replacement function determines how an element should be converted. It should return the Markdown string for a given node. The function is passed the node's content, the node itself, and the TurndownService options.

    The following rule shows how <em> elements are converted:

    rules.emphasis = {
      filter: ['em', 'i'],
     
      replacement: function (content, node, options) {
        return options.emDelimiter + content + options.emDelimiter
      }
    }

    Special Rules

    Blank rule determines how to handle blank elements. It overrides every rule (even those added via addRule). A node is blank if it only contains whitespace, and it's not an <a>, <td>,<th> or a void element. Its behaviour can be customised using the blankReplacement option.

    Keep rules determine how to handle the elements that should not be converted, i.e. rendered as HTML in the Markdown output. By default, no elements are kept. Block-level elements will be separated from surrounding content by blank lines. Its behaviour can be customised using the keepReplacement option.

    Remove rules determine which elements to remove altogether. By default, no elements are removed.

    Default rule handles nodes which are not recognised by any other rule. By default, it outputs the node's text content (separated by blank lines if it is a block-level element). Its behaviour can be customised with the defaultReplacement option.

    Rule Precedence

    Turndown iterates over the set of rules, and picks the first one that matches satifies the filter. The following list describes the order of precedence:

    1. Blank rule
    2. Added rules (optional)
    3. Commonmark rules
    4. Keep rules
    5. Remove rules
    6. Default rule

    Plugins

    The plugin API provides a convenient way for developers to apply multiple extensions. A plugin is just a function that is called with the TurndownService instance.

    License

    turndown is copyright © 2017+ Dom Christie and released under the MIT license.

    Install

    npm i @forked/turndown

    DownloadsWeekly Downloads

    67

    Version

    4.0.4

    License

    MIT

    Unpacked Size

    183 kB

    Total Files

    10

    Last publish

    Collaborators

    • nonamefoo