guardrail.lua v0.1.0-initial release

Initial release of guardrail.lua — runtime contracts and structured validation for Lua.

Highlights

• Dependency-free runtime validation for Lua 5.1–5.4 and LuaJIT
• Primitive, literal, enum, union, optional, nullable, custom, and lazy schemas
• Object, array, tuple, and map validation with nested error paths
• Function contracts with argument/return validation, preconditions, postconditions, and preserved multiple returns
• State invariants with protected mutation helpers
• Structured GuardrailError objects with stable error codes and human-readable formatting
• Defensive defaults for unknown fields, sparse arrays, cyclic data, depth limits, and error-value privacy
• Explicit, non-mutating transformations and unknown-field stripping
• Boundary helpers for configuration, plugins, responses, and events
• LuaLS/EmmyLua annotation generation
• LuaRocks packaging, CI workflow, examples, benchmarks, and release documentation

Installation

luarocks install guardrail

Validation

• lua spec/run.lua — 11 passing tests
• Both development and release rockspecs pass luarocks lint