n8n-io/codemirror-lang-n8n-html

This repository provides a code editor plugin that lets developers write and edit HTML with special n8n expressions mixed in. If you're familiar with code editors like VS Code, this adds syntax highlighting and smart editing features specifically for HTML files that contain n8n's custom expression language, making the code easier to read and less error-prone to write. The project is built on top of CodeMirror 6, which is a popular, lightweight code editor that developers embed into web applications. Rather than building everything from scratch, the team took the existing HTML support from CodeMirror and enhanced it to understand n8n's expression syntax. This means when you type HTML with n8n expressions, the editor recognizes both languages and highlights them appropriately, helps with auto-completion, and catches mistakes in real time. N8n is a workflow automation platform where users connect different apps and services together. Sometimes you need to write custom HTML templates or expressions to customize how data flows through these workflows. This plugin makes that experience smoother by giving you a proper code editor instead of a plain text box. Anyone building complex automations with n8n, whether they're developers, automation engineers, or power users, would benefit from better editor support when writing these templates. One thing to note: the repository itself is no longer actively maintained here. The code has been moved into n8n's main project, so if you're looking for updates or want to contribute, you'd go to the n8n monorepo instead. This archive version serves as a reference, but the active development happens elsewhere.