@kullna/editor

A small but feature-rich code editor for the web

🔍 Demos • 📖 Docs • 🙌 Contribute

@kullna/editor is a web code editor developed by The Kullna Programming Language Project; a platform dedicated to teaching children programming in their own language.

As we worked on the Kullna IDE, we needed a reliable code editor with features like syntax highlighting, efficient indentation management, line highlighting, and a customizable gutter for adding breakpoints and bookmarks. An essential requirement was support for Right-to-Left (RTL) languages.

Our research showed a gap in the market: many available editors were either too complex to be easily customized to our needs, or didn't offer the robustness we needed. Notably, none provided RTL support.

To address this, we introduced @kullna/editor. It's a simple yet versatile code editor, designed with extensibility in mind and built-in RTL support. Crafted in TypeScript, this lightweight, dependency-free editor is not only suitable for basic code editing tasks but also capable of supporting more advanced features like auto-complete and inline help.

Features

• 🎨 Syntax Highlighting: Integrate with Highlight.JS, Prism, or design your custom solution.
• ⏪ Undo/Redo: Offers customizable undo/redo levels.
• ✂️ Copy-Paste: Ensure consistent cross-browser cut, copy, and paste operations in an XSS-secure way.
• 🖊️ Bracket Management: Automatic close-bracket and close-quote insertion, with type-over capability.
• ➡️ Code Indentation: Flexible code indentation using tab or shift-tab. Supports multi-line selections.
• 🧐 Active Line Highlighting: Spotlight the active line or indicate the debugger's current execution point.
• 🔧 Customizable Gutter: Define your gutter contents like breakpoint or bookmark labels while benefiting from our rendering strategies.
• 🖱️ Input Processors: Intuitive APIs designed to allow you to extend the input processing logic to meet your needs.
• 🌍 Full RTL Support: Dedicated support for right-to-left languages.

Why @kullna/editor?

• 🎯 Just Right: Striking a balance between simplicity and flexibility.
• 🌐 Modern APIs: No more browser compatibility headaches.
• 📚 Flexibility: Integrate auto-complete, inline help, or other custom input event logic.
• 🚀 Active Maintenance: Continuously developed for the Kullna IDE.
• 💪 RTL & I18N: Comprehensive support without compromise.
• 👥 Join Us: We're open to contributions!

Contribute

We envision a community-driven evolution for @kullna/editor. Your feedback, ideas, and contributions can shape the future of this editor, making it even more versatile and user-friendly. If our vision resonates with yours, consider contributing.

👉 Read the Contributing Page for more details.

The Kullna Editor source, artifacts, and website content are Copyright (c) 2023 The Kullna Programming Language Project.

They are free to use and open-source under the terms of the GNU Lesser General Public License.