aura-lang

The Aura programming language — AI-first, cross-platform, with a built-in design system.

Write once. Compile to native SwiftUI (iOS), Jetpack Compose (Android), and HTML/CSS/JS (Web).

app TodoApp
  theme: modern.dark

  model Todo
    title: text
    done: bool = false

  screen Main
    state todos: list[Todo] = []
    state input: text = ""

    view
      column gap.md padding.lg
        heading "My Tasks" size.xl
        row gap.sm
          textfield input placeholder: "Add task..."
          button "Add" .accent -> addTodo(input)
        each todos as todo
          row gap.md align.center
            checkbox todo.done
            text todo.title strike: todo.done

Why Aura?

| | TypeScript+React Native | Aura | |---|---|---| | Lines for a todo app | ~67 | ~27 | | Tokens (LLM cost) | ~256 | ~74 (70% less) | | One typo → errors | 5 cascading errors | 1 error + confidence-scored fix | | Cross-platform | Shared runtime | Native codegen per platform | | Design system | Import Tailwind | Built into grammar | | Password as string? | Allowed | Compile error |

Benchmarks

Real measurements — same app, four languages:

| App | Aura | TypeScript+RN | Swift+SwiftUI | Kotlin+Compose | |---|---|---|---|---| | Hello World | 4L / 8T | 15L / 46T | 16L / 31T | 18L / 33T | | Counter | 14L / 47T | 32L / 133T | 34L / 67T | 46L / 110T | | Todo List | 27L / 74T | 67L / 256T | 49L / 122T | 53L / 222T | | Total | 45L / 129T | 114L / 435T | 99L / 220T | 117L / 365T |

Token reduction vs TypeScript+RN:    70% fewer tokens
Token reduction vs Swift+SwiftUI:    41% fewer tokens
Token reduction vs Kotlin+Compose:   65% fewer tokens

Compilation speed: ~112 us to compile a counter app to 3 native platforms (Web + iOS + Android). 100% first-compile success rate.

For AI agents, 70% fewer tokens = 70% cheaper inference costs.

Install the Compiler

The Aura compiler is written in Rust:

git clone https://github.com/360Labs-dev/aura.git
cd aura
cargo build --release

What This Package Includes

• TextMate grammar — syntax highlighting for any editor
• Example programs — .aura files you can compile
• Language reference — keywords, types, design tokens exported as JS objects

const aura = require('aura-lang');

// TextMate grammar path (for editor integration)
aura.grammarPath  // → .../syntaxes/aura.tmLanguage.json

// Language metadata
aura.keywords     // ['app', 'screen', 'view', 'model', ...]
aura.types        // ['text', 'int', 'secret', 'email', ...]
aura.designTokens // { spacing: ['xs','sm','md',...], color: ['accent',...], ... }
aura.viewElements // { layout: ['column','row',...], widgets: ['text',...], ... }

Commands

aura build app.aura --target web        # → HTML/CSS/JS
aura build app.aura --target ios        # → SwiftUI
aura build app.aura --target android    # → Compose
aura build app.aura --target all        # → all three
aura sketch "todo app with dark mode"   # → generate from English
aura run                                # → dev server
aura explain app.aura                   # → plain English
aura agent serve                        # → JSON-RPC for AI agents

Links

• GitHub: https://github.com/360Labs-dev/aura
• Language Spec: https://github.com/360Labs-dev/aura/blob/main/spec/language.md
• VS Code Extension: editors/vscode/ in the repo

License

MIT