filemount

Drop a Monaco-powered file editor into any Express app with one line.

Why

You need to edit files on a dev server without SSH, FTP, or switching tools. Mount this middleware, point it at specific files, and edit them in the browser.

Install

npm install filemount

Usage

const express = require('express');
const filemount = require('filemount');

const app = express();

app.use(filemount({
  route: '/editor',
  files: {
    'config.json': '/var/app/config.json',
    'styles.css': '/var/app/public/styles.css'
  }
}));

app.listen(3000);
// Editor at http://localhost:3000/editor

Options

| Option | Default | Description | |--------|---------|-------------| | route | '/editor' | URL path for the editor UI | | files | {} | Map of display names to absolute file paths |

Only files in the files map can be read or written.

API routes are automatically namespaced under your route (e.g. /editor/api/files).

Features

• Monaco Editor with 70+ language support
• Auto-detects language from file extension
• Unsaved changes detection
• Ctrl/Cmd+S to save
• Self-contained (no CDN)

Non-Goals

This is not:

• A file manager or directory browser
• A CMS or production editor
• A VS Code replacement

It edits specific files you explicitly allow. That's it.

Security

This middleware reads and writes real files. It has no authentication.

Do not expose on public routes.

Intended for:

• Local development
• Internal tools behind VPN
• Routes protected by your own auth middleware

License

MIT