corn-config/corn

---

corn-config/corn.json

{
  "createdAt": "2022-01-25T22:27:13Z",
  "defaultBranch": "master",
  "description": " 🌽 A simple and pain-free configuration language. Reference libcorn implementation and CLI.",
  "fullName": "corn-config/corn",
  "homepage": "https://cornlang.dev",
  "language": "Rust",
  "name": "corn",
  "pushedAt": "2025-07-31T16:04:17Z",
  "stargazersCount": 78,
  "topics": [
    "configuration",
    "grammar",
    "language",
    "peg",
    "pest",
    "rust",
    "rust-library"
  ],
  "updatedAt": "2025-12-31T19:17:34Z",
  "url": "https://github.com/corn-config/corn"
}

🌽 Corn

A simple and pain-free configuration language.

Corn has been designed using inspiration from JSON and Nix to produce a language that’s easy and intuitive to write, good for config files, and has a feature-set small enough you can learn it in minutes. It was born out of the following frustrations:

• JSON is not a config language, despite how often people use it as one.
• TOML is good for flat structures but gets ugly quickly with deeper objects.
• YAML is far too complex and its whitespace rules make it error-prone.
• Nix is a full-sized language and not easy to integrate.

---

Documentation

📖User guide | 📝 Full specification

---

let {
    $entry = "dist/index.js"
    $author = { name = "John Smith" email = "mail@example.com" }
} in {
    name = "example-package"
    version = "1.0.0"
    main = $entry
    bin.filebrowser = $entry
    private = false

    author = $author
    author.url = "https://example.com"

    contributors = [ $author ]

    scripts.build = "tsc"
    scripts.run = "node dist"

    dependencies = {
        dotenv = "^8.2.0"
        // put the rest of your deps here...
    }

    devDependencies.typescript = "^4.5"

    config.port = 8080
    config.hostname = null
}

---

Corn is available as libraries for Rust, Go, Lua, and JavaScript (via WASM).
A CLI and web API are also available.

Editor plugins are available for JetBrains IDEs, VS Code and Neovim.