Welcome to react-code-blocks 👋👋👋

React components for rendering code snippets with syntax highlighting

BREAKING CHANGES: VERSION >= 0.0.8-alpha now requires a nodejs version >= 12

• Background
  • ✨ Demo
• Install
• Usage
• Components
  • CodeBlock
    • Props
  • CopyBlock
    • Props
• Supported Themes
• Supported Languages
• Alternatives
• Todos
• Show your support
• Author

Background

Initially, this started as a small project looking to modify Atlaskit's Code Block component to support more languages (i.e graphql, reasonml, etc). It then rapidly evolved into a never-ending rabbithole which ended up with support for themes (i.e railscast, darcula, monokai, etc), customizable styles, and copy functionality too!

I don't plan on keeping this updated unless people are looking to actually use it. So don't be shy! Feel free to post an issue or a pr.

✨ Demo

Install

Install react-code-blocks via yarn or npm

1yarn add react-code-blocks

1npm i react-code-blocks

Usage

Updated usage instructions can be found here

1import { CopyBlock } from "react-code-blocks";

1function MyCodeComponent(props) {
2  return (
3    <CopyBlock
4      text={props.code}
5      language={props.language}
6      showLineNumbers={props.showLineNumbers}
7      wrapLines
8    />
9  );
10}

Components

CodeBlock

A simple code block component

1import { CodeBlock, dracula } from "react-code-blocks";
2
3function MyCoolCodeBlock({ code, language, showLineNumbers }) {
4  return (
5    <CodeBlock
6      text={code}
7      language={language}
8      showLineNumbers={showLineNumbers}
9      theme={dracula}
10    />
11  );
12}

Props

Note that CodeBlock & CopyBlock share exactly the same props

name	type	default	description
text	string	required	The code to be formatted
language	string	"text"	The language in which the code is written. See here for a list of supported languages
showLineNumbers	boolean	true	Indicates whether or not to show line numbers
theme	object	dracula	A theme object for the code block. See here for a list of supported themes
highlight	string	""	Lines to highlight! For multiple lines, use a comma i.e highlight="1,6,7". For a range of lines, use a - i.e highlight="1-5" for highlighting lines 1-5.

---

more to come...

CopyBlock

A code block component with a little copy button for copying a snippet.

1import { CopyBlock, dracula } from "react-code-blocks";
2
3function MyCoolCodeBlock({ code, language, showLineNumbers }) {
4  <CopyBlock
5    text={code}
6    language={language}
7    showLineNumbers={showLineNumbers}
8    theme={dracula}
9    codeBlock
10  />;
11}

Props

Same as the CodeBlock's component with the exception of one!

name	type	default	description
codeBlock	boolean	false	Indicates whether to render the CopyBlock as an inline Code component or a CodeBlock component
onCopy	function	-	The onCopy function is called if the copy icon is clicked. This enables you to add a custom message that the code block is copied

Supported Themes

For a list of supported themes, check out the list here

Supported Languages

For a list of supported languages, check out the list here

Alternatives

If you're looking for some more maintained solutions, I'd suggest the following:

• react-syntax-highlighter: syntax highlighting component for react with prismjs or highlightjs ast using inline styles by @conorhastings.
  • It's actually used in this project as well! :smile:
• react-highlight.js: A lightweight React wrapper around the Highlight.js syntax highlighting library by @bvaughn.
• react-live: A flexible playground for live editing React components by @FormidableLabs.
• @atlaskit/code: Renders inline code snippets and code blocks
  • Original inspiration for this project kit for this project
• carbon-components-react: Check out their <CodeSnippet> component which supports multi-line, single-line, and inline snippets along with added copying functionality.

Feel free to add any other alternative packages here! :smile:

Todos

• Add a better readme
• Highlighting line feature
• Supported Themes documentation
• Supported Languages documentation
• Add a License
• Docs for usage with GatsbyJS
• Docs for usage with MDX
• Contributor guide for development
• Contributor guide for adding themes
• Contributor guide for adding languages
• Document props for Code component
• Better demo
• Storybook with Docs
• Move to typescript
• A component with a terminal around it. because why not!? 🧐

Show your support

Give a ⭐️ if this project helped you!

---

This README was generated with ❤️ by readme-md-generator

Author

• Website: https://novvum.io
• Twitter: @rajinwonderland
• Github: @rajinwonderland