Thailang for VS Code

Syntax highlighting and language support for Thailang — a Thai-first programming language that compiles to JavaScript, WebAssembly, and (soon) native binaries.

Features

Syntax highlighting for .th files (Thai keywords, type annotations, string/number literals, comments, operators)
Bracket matching and auto-closing for {}, [], (), and ""
Line (//) and block (/* */) comment toggling via Ctrl+/
Thai-aware word selection — Ctrl+D / double-click selects full Thai identifiers without splitting on vowel marks
Smart indentation after {, [, (

Example

ฟังก์ชัน บวก(ก: ตัวเลข, ข: ตัวเลข) -> ตัวเลข {
    คืน ก + ข;
}

พิมพ์(บวก(10, 20));   // → 30

Install

Build the `.vsix` from source

cd vscode-ext && bunx vsce package

Produces thailang-0.1.0.vsix (~6 KB).

VS Code

code --install-extension thailang-0.1.0.vsix

Google Antigravity / Cursor / Windsurf (VS Code forks)

The code CLI talks only to VS Code's own extension registry, so it won't install into these forks. Use the Extensions panel instead:

Open the Extensions view (Cmd/Ctrl+Shift+X)
Click the ⋯ menu → Install from VSIX…
Pick thailang-0.1.0.vsix

Or from each editor's own CLI:

Antigravity: antigravity --install-extension thailang-0.1.0.vsix
Cursor: cursor --install-extension thailang-0.1.0.vsix
Windsurf: windsurf --install-extension thailang-0.1.0.vsix

Marketplace (once published)

# VS Code
code --install-extension thailang-dev.thailang

# Antigravity / Cursor / Windsurf default to OpenVSX — listing needs
# to be published there separately via `bunx ovsx publish`.

Development

The TextMate grammar lives at syntaxes/thailang.tmLanguage.json and mirrors the scope conventions used by the Rust compiler's lexer.

To add a keyword:

Add it to the appropriate keyword set in compiler/crates/lexer/src/token.rs
Add it to the matching #keyword-* repository rule in syntaxes/thailang.tmLanguage.json
Rebuild and reload VS Code to see the change

License

MIT — see LICENSE in the repository root.

Thailang

9Tech