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Turn markdown text into GitHub Flavoured Markdown with light/dark code syntax highlight.

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phucbm/gfm

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@phucbm/gfm

pages-build-deployment release npm license

Turn Markdown text into GitHub Flavored Markdown (GFM) with light/dark code syntax highlight.

What is this?

Ever want to just write Markdown for your app, then make it to HTML with the styling from GitHub, along with code syntax highlight? This project was made for you.

Install

Install with npm:

npm i @phucbm/gfm

# webpack loader for markdown
npm i markdown-loader

# styling for GFM
npm i github-markdown-css

Use

Convert Markdown format using markdown-loader by markedjs

Say our document example.md contains:

View example.md
# GFM

## Autolink literals

www.example.com, https://example.com, and contact@example.com.

## Footnote

A note[^1]

[^1]: Big note.

## Strikethrough

~one~ or ~~two~~ tildes.

## Table

| a | b | c | d |
| - | :- | -: | :-: |

## Tasklist

* [ ] to do
* [x] done

To be able to read the .md file format, add markdown-loader to your webpack.config.js

// webpack.config.js
export default {
    module: {
        rules: [
            // Markdown
            {
                test: /\.md$/,
                use: [
                    {
                        loader: "html-loader",
                    },
                    {
                        loader: "markdown-loader",
                        options: {
                            // Pass options to marked
                            // See https://marked.js.org/using_advanced#options
                        },
                    },
                ],
            },
        ],
    },
};

…and our module example.js looks as follows:

import markdownText from "./example.md";
import 'github-markdown-css/github-markdown.css';

// the Markdown text will be converted to HTML text using "markdown-loader"
console.log(markdownText);

const content = document.querySelector('#content');

// insert the HTML text to the DOM
content.insertAdjacentHTML('beforeend', markdownText);

...with the index.html as below

View index.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>@phucbm/gfm</title>
    <style>
        body {box-sizing:border-box; margin:0;}
        .container {
            min-width:300px;
            max-width:980px;
            margin-left:auto;
            margin-right:auto;
            padding:45px;
        }

        @media (max-width:767px) {
            .container {
                padding:15px;
            }
        }
    </style>
</head>
<body class="markdown-body">
    <div class="container">
        <div id="content"></div>
    </div>
</body>
</html>

See how it looks like.

Code highlight

Your Markdown code block must have a language identifier like in the example.md, then run highlightCodeSyntax() only when the HTML has loaded.

import {highlightCodeSyntax} from "@phucbm/gfm";

// insert HTML

// code highlight (only run once the HTML as loaded)
highlightCodeSyntax().then();

Info Check the folder example for demo files.

API

highlightCodeSyntax(codeBlocks)

Loop through all <code> in the DOM and replace with highlighted code syntax.

Parameters
  • codeBlocks - HTMLElement, optional.
Return

{Promise<HTMLElement[]>}

Development

Clone this repo, then:

# install
npm i

# run dev server
npm run dev

License

MIT © Phuc Bui

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Turn markdown text into GitHub Flavoured Markdown with light/dark code syntax highlight.

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