remark-wiki-link

(Forked from datahub)

Parse and render wiki-style links in markdown especially Obsidian style links.

What is this ?

Using obsidian, when we type in wiki link syntax for eg. [[wiki_link]] it would parse them as anchors.

Features supported

• [x] Support [[Internal link]]
• [x] Support [[Internal link|With custom text]]
• [x] Support [[Internal link#heading]]
• [x] Support [[Internal link#heading|With custom text]]
• [x] Support ![[Document.pdf]]
• [x] Support ![[Image.png]]

• Supported image formats are jpg, jpeg, png, apng, webp, gif, svg, bmp, ico
• Unsupported image formats will display a raw wiki link string, e.g. [[Image.xyz]].

Future support:

• [ ] Support ![[Audio.mp3]]
• [ ] Support ![[Video.mp4]]
• [ ] Support ![[Embed note]]
• [ ] Support ![[Embed note#heading]]

Installation

npm install @portaljs/remark-wiki-link

Usage

import unified from "unified";
import markdown from "remark-parse";
import wikiLinkPlugin from "@portaljs/remark-wiki-link";

const processor = unified().use(markdown).use(wikiLinkPlugin);

Configuration options

pathFormat

Type: "raw" | "obisidan-absolute" | "obsidian-short" Default: "raw"

• "raw": use this option for regular relative or absolute paths (or Obsidian relative paths), e.g. [[../some/folder/file]] or [[[/some/folder/file]]],
• "obsidian-absolute": use this option for Obsidian absolute paths, i.e. paths with no leading /, e.g. [[some/folder/file]]
• "obsidian-short": use this option for Obsidian shortened paths, e.g. [[file]] to resolve them to absolute paths. Note that apart from setting this value, you will also need to pass a list of paths to files in your content folder, and pass it as permalinks option. You can generate this list yourself or use our util function getPermalinks. See below for more info.

[!note] Wiki link format in Obsidian can be configured in Settings -> Files & Links -> New link format.

aliasDivider

Type: single character string Default: "|"

Alias divider character used in your wiki links. E.g. [[/some/folder/file|Alias]]

permalinks

Type: Array<string> Default: []

A list of permalinks you want to match your wiki link paths with. Wiki links with matched permalinks will have node.data.exists property set to true. Wiki links with no matching permalinks will also have additional class new set.

wikiLinkResolver

Type: (name: string) => Array<string> Default: (name: string) => name.replace(/\/index$/, "") (simplified; see source code for full version)

A function that will take the wiki link target page (e.g. "/some/folder/file" in [[/some/folder/file#Some Heading|Some Alias]] wiki link) and return an array of pages to which the wiki link can be resolved (one of them will be used, depending on wheather pemalinks are passed, and if match is found).

If permalinks are passed, the resulting array will be matched against these permalinks to find the match. The matching pemalink will be used as node's href (or src for images).

If no matching permalink is found, the first item from the array returned by this function will be used as a node's href (or src for images). So, if you want to write a custom wiki link -> url

newClassName

Type: string Default: "new"

Class name added to nodes created for wiki links for which no matching permalink (passed in permalinks option) was found.

wikiLinkClassName

Type: string Default: "internal"

Class name added to all wiki link nodes.

hrefTemplate

Type: (permalink: string) => string Default: (permalink: string) => permalink

A function that will be used to convert a matched permalink of the wiki link to href (or src for images).

markdownFolder ❌ (deprecated as of version 1.1.0)

A string that points to the content folder, that will be used to resolve Obsidian shortened wiki link path format.

Instead of using this option, use e.g. getPermalinks util function exported from this package to generate a list of permalinks from your content folder, and pass it explicitly as permalinks option.

Generating list of permalinks from content folder with getPermalinks

If you're using shortened path format for your Obsidian wiki links, in order to resolve them correctly to paths they point to, you need to set option.pathFormat: "obsidian-short" but also provide the plugin with a list of permalinks that point to files in your content folder as option.permalinks. You can use your own script to generate this list or use our util function getPermalinks like so:

import unified from "unified";
import markdown from "remark-parse";
import wikiLinkPlugin from "@portaljs/remark-wiki-link";
import { getPermalinks } from "@portaljs/remark-wiki-link";

const permalinks = await getPermalinks("path-to-your-content-folder");

const processor = unified().use(markdown).use(wikiLinkPlugin, {
  pathFormat: "obsidian-short",
  permalinks,
});

Running tests

pnpm nx test remark-wiki-link