README.md

remark-wiki-link

⚠️ This plugin is affected by the new parser in remark (micromark, see remarkjs/remark#536). For remark 12, use v0.0.x of this package. For remark 13+, use v1.0.0 or above.

This remark plugin parses and renders [[Wiki Links]].

• Parse wiki-style links and render them as anchors
• Differentiate between "new" and "existing" wiki links by giving the parser a list of existing permalinks
• Parse aliased wiki links i.e [[Real Page:Page Alias]]

Looking for lower level packages? Check out mdast-util-wiki-link for working with ASTs and micromark-extension-wiki-link for working with tokens.

Usage

const unified = require('unified')
const markdown = require('remark-parse')
const wikiLinkPlugin = require('remark-wiki-link');

let processor = unified()
    .use(markdown, { gfm: true })
    .use(wikiLinkPlugin)

When the processor is run, wiki links will be parsed to a wikiLink node.

If we have this markdown string:

[[Test Page]]

A node will be created that looks like this:

{
    value: 'Test Page',
    data: {
        alias: 'Test Page',
        permalink: 'test_page',
        exists: false,
        hName: 'a',
        hProperties: {
            className: 'internal new',
            href: '#/page/test_page'
        },
        hChildren: [{
            type: 'text',
            value: 'Test Page'
        }]
    }
}

• data.alias: The display name for this link
• data.permalink: The permalink for this page. This permalink is computed from node.value using options.pageResolver, which can be passed in when initializing the plugin.
• data.exists: Whether the page exists. A page exists if its permalink is found in options.permalinks, passed when initializing the plugin.
• data.hProperties.className: Classes that are automatically attached to the a when it is rendered as HTML. These are configurable with options.wikiLinkClassName and options.newClassName. options.newClassName is attached when data.exists is false.
• data.hProperties.href: href value for the rendered a. This href is computed using options.hrefTemplate.

When rendered to HTML, we get:

<a class="internal new" href="#/page/test_page">Test Page</a>

Configuration options

• options.permalinks [String]: An array of permalinks that should be considered existing pages. If a wiki link is parsed and its permalink matches one of these permalinks, node.data.exists will be true.

• options.pageResolver (pageName: String) -> [String]: A function that maps a page name to an array of possible permalinks. These possible permalinks are cross-referenced with options.permalinks to determine whether a page exists. If a page doesn't exist, the first element of the array is considered the permalink.

  The default pageResolver is:

(name) => [name.replace(/ /g, '_').toLowerCase()]

• options.hrefTemplate (permalink: String) -> String: A function that maps a permalink to some path. This path is used as the href for the rendered a.

  The default hrefTemplate is:

(permalink) => `#/page/${permalink}`

• options.wikiLinkClassName: a class name that is attached to any rendered wiki links. Defaults to "internal".
• options.newClassName: a class name that is attached to any rendered wiki links that do not exist. Defaults to "new".
• options.aliasDivider: a string for aliased pages.

Aliasing pages

Aliased pages are supported with the following markdown syntax:

[[Real Page:Page Alias]]

The AST node will look like:

{
    value: 'Real Page',
    data: {
        alias: 'Page Alias',
        permalink: 'real_page',
        exists: false,
        hName: 'a',
        hProperties: {
            className: 'internal new',
            href: '#/page/real_page'
        },
        hChildren: [{
            type: 'text',
            value: 'Page Alias'
        }]
    }
}

And will produce this HTML when rendered:

<a class="internal new" href="#/page/real_page">Page Alias</a>