MAML for Visual Studio Code

Language support for MAML (Minimal Abstract Markup Language).

Features

• Syntax highlighting — full TextMate grammar for .maml files
• Validation — real-time parse error diagnostics
• Formatting — format documents with consistent style (Shift+Alt+F)
• Document outline — navigate keys and structure via the Outline panel (Ctrl+Shift+O)
• Folding — collapse objects, arrays, and raw strings
• Hover — type and value information on hover
• Completion — keywords (true, false, null), structure snippets, and known keys from the document
• Bracket matching — auto-close {}, [], ""
• Comment toggling — toggle # line comments (Ctrl+/)

Settings

Setting	Default	Description
maml.validate	true	Enable/disable validation diagnostics
maml.format.enable	true	Enable/disable document formatting

What is MAML?

MAML is a minimal, human-readable data format. Think JSON, but cleaner:

{
  project: "MAML"
  tags: [
    "minimal"
    "readable"
  ]

  # Comments are supported
  spec: {
    version: 1
    author: "Anton Medvedev"
  }

  notes: """
Raw multiline strings.
No escaping needed.
"""
}

Key differences from JSON:

• # comments
• Unquoted keys
• Optional commas (newlines work as separators)
• Raw multiline strings with """
• No trailing comma errors

Learn more at maml.dev.

Development

npm install
npm run build
npm run watch   # rebuild on changes
npm run lint    # type-check

To test locally, press F5 in VS Code to open an Extension Development Host.

License

MIT