ink-mde

Ink

The flexible TypeScript Markdown editor that powers https://octo.app.

Features

• Automatic, dark, or light themes (automatic by default)
• Hybrid plain-text Markdown rendering
• Supports GitHub Flavored Markdown (an extension of CommonMark)
• Syntax highlighting for many common languages (in code blocks)
• Drag-and-drop or paste to upload files
• Inline Markdown image previews
• Configurable and stylable
• An optional formatting toolbar (great for mobile)
• Vim Mode

How to install

Ink is written in TypeScript and provides both ES and UMD packages.

Yarn

yarn add @writewithocto/ink

NPM

npm install --save @writewithocto/ink

How to get started

There are many ways to customize Ink to fit your needs. Here are a few examples to get you started.

Minimal setup

Mount the component and start writing.

// ./examples/minimal.ts

import ink from '@writewithocto/ink'

// The only requirement is an HTML element.
ink(document.getElementById('editor')!)

Track state changes with hooks

To sync the editor with your app's state, you can use the afterUpdate hook.

// ./examples/hooks.ts

import { defineOptions, ink } from '@writewithocto/ink'

// With hooks, you can keep your state in sync with the editor.
const state = { doc: '# Start with some text' }

// Use defineOptions for automatic type hinting.
const options = defineOptions({
  doc: state.doc,
  hooks: {
    afterUpdate: (doc: string) => {
      state.doc = doc
    },
  },
})

const editor = ink(document.getElementById('editor')!, options)

// You can also update the editor directly.
editor.update(state.doc)

Futher customization

Option	Description	Type	Default
options.doc	Initialize the editor with an existing doc	string	''
options.files.clipboard	Enable file uploads on paste	boolean	false
options.files.dragAndDrop	Enable drag-and-drop file uploads	boolean	false
options.files.handler	Handle file uploads (not handled by Ink)	(files: FileList) => Promise<any> | void	() => {}
options.hooks.afterUpdate	Run some code after the doc is updated	(doc: string) => void	() => {}
options.hooks.beforeUpdate	Run some code before the doc is updated	(doc: string) => void	() => {}
options.interface.appearance	Change the editor theme	'auto' | 'dark' | 'light'	'auto'
options.interface.attribution	Show the "Powered by Ink" attribution	boolean	true
options.interface.images	Render images in the editor	boolean	false
options.interface.spellcheck	Enable spellcheck	boolean	true
options.interface.toolbar	Enable the formatting toolbar	boolean	false
options.selections	Initialize the editor with selections	Ink.Editor.Selection[]	[]
options.toolbar.bold	Include this button in the toolbar	boolean	true
options.toolbar.code	Include this button in the toolbar	boolean	true
options.toolbar.codeBlock	Include this button in the toolbar	boolean	true
options.toolbar.heading	Include this button in the toolbar	boolean	true
options.toolbar.image	Include this button in the toolbar	boolean	true
options.toolbar.italic	Include this button in the toolbar	boolean	true
options.toolbar.link	Include this button in the toolbar	boolean	true
options.toolbar.list	Include this button in the toolbar	boolean	true
options.toolbar.orderedList	Include this button in the toolbar	boolean	true
options.toolbar.quote	Include this button in the toolbar	boolean	true
options.toolbar.taskList	Include this button in the toolbar	boolean	true
options.toolbar.upload	Include this button in the toolbar	boolean	false
options.vim	Use Vim keybindings to edit the doc	boolean	false

Appearance

Many aspects of the editor's appearance can be customized with CSS custom properties (aka CSS variables).

General-purpose styles

CSS Custom Property	CSS Property	Default (Dark)	Override (Light)
--ink-border-radius	border-radius	0.25rem
--ink-color	color	#fafafa	#171717
--ink-font-family	font-family	sans-serif
--ink-flex-direction	flex-direction	column

Block styles

Blocks are used to provide a dynamic user experience. Examples of blocks are images, multiline code blocks, and the toolbar.

CSS Custom Property	CSS Property	Default (Dark)	Override (Light)
--ink-block-background-color	background-color	#121212	#f5f5f5
--ink-block-background-color-on-hover	background-color	#0f0f0f	#e0e0e0
--ink-block-max-height	max-height	20rem
--ink-block-padding	padding	0.5rem

Code styles

These styles are for code blocks and inline code.

CSS Custom Property	CSS Property	Default (Dark)	Override (Light)
--ink-code-background-color	background-color	var(--ink-block-background-color)
--ink-code-color	color	inherit
--ink-code-font-family	font-family	'Monaco', Courier, monospace

Syntax highlighting

You can customize the entire syntax theme too.

CSS Custom Property	CSS Property	Default (Dark)	Override (Light)
--ink-syntax-atom-color	color	#d19a66
--ink-syntax-comment-color	color	#abb2bf
--ink-syntax-emphasis-color	color	inherit
--ink-syntax-emphasis-font-style	font-style	italic
--ink-syntax-heading-color	color	#e06c75
--ink-syntax-heading-font-size	font-size	1em
--ink-syntax-heading-font-weight	font-weight	600
--ink-syntax-heading1-color	color	#e06c75
--ink-syntax-heading1-font-size	font-size	1.6em
--ink-syntax-heading1-font-weight	font-weight	600
--ink-syntax-heading2-color	color	#e06c75
--ink-syntax-heading2-font-size	font-size	1.5em
--ink-syntax-heading2-font-weight	font-weight	600
--ink-syntax-heading3-color	color	#e06c75
--ink-syntax-heading3-font-size	font-size	1.4em
--ink-syntax-heading3-font-weight	font-weight	600
--ink-syntax-heading4-color	color	#e06c75
--ink-syntax-heading4-font-size	font-size	1.3em
--ink-syntax-heading4-font-weight	font-weight	600
--ink-syntax-heading5-color	color	#e06c75
--ink-syntax-heading5-font-size	font-size	1.2em
--ink-syntax-heading5-font-weight	font-weight	600
--ink-syntax-heading6-color	color	#e06c75
--ink-syntax-heading6-font-size	font-size	1.1em
--ink-syntax-heading6-font-weight	font-weight	600
--ink-syntax-keyword-color	color	#c678dd
--ink-syntax-link-color	color	#96c0d8
--ink-syntax-meta-color	color	#abb2bf
--ink-syntax-name-color	color	#d19a66
--ink-syntax-name-label-color	color	#abb2bf
--ink-syntax-name-property-color	color	#96c0d8
--ink-syntax-name-property-definition-color	color	#e06c75
--ink-syntax-name-variable-color	color	#e06c75
--ink-syntax-name-variable-definition-color	color	#e5c07b
--ink-syntax-name-variable-local-color	color	#d19a66
--ink-syntax-name-variable-special-color	color	inherit
--ink-syntax-number-color	color	#d19a66
--ink-syntax-operator-color	color	#96c0d8
--ink-syntax-processing-instruction-color	color	#444444	#bbbbbb
--ink-syntax-punctuation-color	color	#abb2bf
--ink-syntax-strikethrough-color	color	inherit
--ink-syntax-strikethrough-text-decoration	text-decoration	line-through
--ink-syntax-string-color	color	#98c379
--ink-syntax-string-special-color	color	inherit
--ink-syntax-strong-color	color	inherit
--ink-syntax-strong-font-weight	font-weight	600
--ink-syntax-url-color	color	#96c0d8

Support

Your support is appreciated. Here are some ways you can help. ♥️

Leave the Attribution enabled

There is a small Powered by Ink attribution in the bottom-right corner of all Ink instances by default. Ink is a free MIT-licensed library under independent development, and that attribution helps to increase awareness of this project.

Tell us what you think

Your feedback is immensely important for building Ink into a library that we all love. Consider starting a discussion under Octo if you have a question or just want to chat about ideas!

Open a Pull Request

If you feel comfortable with an existing issue, please consider opening a Pull Request. I would love to work with you to get it merged!

Become a financial backer

• GitHub Sponsors
• Patreon
• Ko-Fi
• Buy Me a Coffee