Luau Language Reference

Overview

Load this reference when the task involves:

• General Luau syntax questions or code generation
• Type system usage, annotations, or generics
• Roblox-specific API patterns (services, events, instances)
• OOP design with metatables and module-based classes
• Async/concurrent programming (coroutines, Promises, task library)
• Performance optimization or idiomatic Luau style
• Debugging common pitfalls (1-based indexing, nil in tables, deprecated APIs)

Luau is Roblox's fork of Lua 5.1 with gradual typing, performance improvements, and additional built-in functions. It is NOT standard Lua 5.1 - it has its own type system, generics, continue keyword, compound assignment operators (+=, -=, etc.), string interpolation, and other extensions.

Helper Modules (vendored in this harness)