A close superset of ES7 with JSX and Flow, built with Babel. Designed to make programmers a little more productive.

See lightscript.org for example code and language reference documentation. A quick taste:

Item({ item, isActive }) =>
  className = if isActive: 'active' else: 'inactive'

  <li className={className}>
    {item}
  </li>

Come hang out in the gitter chatroom, where contributors can help you get started and answer any questions.

In addition to all all ES7, JSX, and Flow features:

• (Optional) Significant Indentation
• Implicit Returns
• If Expressions
• Auto const
• Async/Await shorthand
• Safe-Await
• Readable Operators (or, and, ==, etc)
• Bound Methods
• Commaless Objects and Arrays
• Automatic Semicolon Insertion that always works
• Array Comprehensions
• Object Comprehensions
• Array-based for-loops
• Object-based for-loops
• a few others

Reference documentation is available at lightscript.org, or in Markdown format here. Tests for all features can be seen here and here.

"LightScript" is split across multiple repos:

• The Parser: babylon-lightscript
  • The core of most of the language.
• The Babel Plugin: babel-plugin-lightscript
  • Rewrites a "LightScript AST" into a "JavaScript AST".
  • The core of what you need to use LightScript.
• The Babel Preset: babel-preset-lightscript
  • Provides the rest of ES7 for ES6 environments, as well as runtime typechecking.
• The Sublime Text Package: lightscript-sublime
  • Provides syntax highlighting, albeit somewhat hackily.
  • Available now on Package Control.
• The Atom Package: lightscript-atom
  • Based on the Sublime Package.
  • Available now on apm.
• The Visual Studio Code Package: lightscript-vscode
  • Based on the Sublime Package.
  • Available now on the VS Code Extension Marketplace.
• The Website: lightscript.org
  • In addition to powering lightscript.org, it's also an example of LightScript code in use.

For now, the issue tracker on this repo should be used for bug reports and feature requests.