Flux Language Support

Official Visual Studio Code support for the Flux programming language.

Flux is an experimental programming language created by a single developer and is currently in its early stages.

This extension provides syntax highlighting and basic error diagnostics for Flux v1.0.0.

Features

Syntax Highlighting

• Flux keywords (let, print, ui)
• Strings, numbers, comments
• UI commands (ui init, ui text, ui input, ui button, ui run)

Error Diagnostics (Early / Experimental)

This extension detects common Flux mistakes and highlights them in-editor:

• Missing ; at end of statements
• Invalid let statements
• Invalid print(...) calls
• Invalid ui ...(...) commands
• Unclosed string literals
• Unbalanced parentheses

Errors appear as:

• Red squiggles
• Messages in the Problems panel

Supported File Types

• .fl — Flux source files

Files with the .fl extension are automatically recognized as Flux.

Example Flux Code

let x = 2 + 3 * 4;
print(x);

ui init("Flux Demo");
ui text("Hello from Flux!");
ui input("Name", "User");
ui button("OK");
ui run("tui");