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| 1 | +# Changelog |
| 2 | + |
| 3 | +All notable changes to this project will be documented in this file. |
| 4 | + |
| 5 | +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), |
| 6 | +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). |
| 7 | + |
| 8 | +## [0.1.0] - 2025-08-02 |
| 9 | + |
| 10 | +### 🎉 Initial Release |
| 11 | + |
| 12 | +#### Core Parsing & Generation |
| 13 | +- **Complete Lua parser** with full AST generation supporting all Lua 5.1+ syntax |
| 14 | +- **Advanced Luau parser** with type annotations, generics, and modern syntax features |
| 15 | +- **TypeScript code generation** from Luau type definitions with intelligent mapping |
| 16 | +- **Lua code formatting** with customizable styling options and pretty-printing |
| 17 | +- **AST manipulation utilities** with comprehensive type definitions |
| 18 | + |
| 19 | +#### Advanced Type System |
| 20 | +- **Primitive type mapping**: `string`, `number`, `boolean`, `nil` → `null` |
| 21 | +- **Optional types**: `foo: string?` → `foo?: string` |
| 22 | +- **Array types**: `{string}` → `string[]` with proper element type detection |
| 23 | +- **Record types**: `{[string]: any}` → `Record<string, any>` and index signatures |
| 24 | +- **Union types**: `"GET" | "POST" | "PUT"` with string literal preservation |
| 25 | +- **Intersection types**: `A & B` with proper parenthesization |
| 26 | +- **Function types**: `(x: number) -> string` → `(x: number) => string` |
| 27 | +- **Method types**: Automatic `self` parameter removal for class methods |
| 28 | +- **Generic types**: Support for parameterized types and type variables |
| 29 | +- **Table types**: Complex nested object structures with property signatures |
| 30 | + |
| 31 | +#### Language Features |
| 32 | +- **Template string interpolation**: Full backtick string support with `${var}` and `{var}` syntax |
| 33 | +- **Continue statements**: Proper parsing with loop context validation |
| 34 | +- **Reserved keywords as properties**: Handle `type`, `export`, `function`, `local` as object keys |
| 35 | +- **Comment preservation**: Single-line (`--`) and multi-line (`--[[ ]]`) comment handling |
| 36 | +- **JSDoc conversion**: Transform Lua comments to TypeScript JSDoc format |
| 37 | +- **Export statements**: Support for `export type` declarations |
| 38 | +- **String literals**: Proper handling of quoted strings in union types |
| 39 | + |
| 40 | +#### Modular Architecture |
| 41 | +- **Component-based lexer**: Specialized tokenizers for numbers, strings, identifiers, comments |
| 42 | +- **Pluggable tokenizer system**: Easy extension with new language constructs |
| 43 | +- **Operator precedence handling**: Correct parsing of complex expressions |
| 44 | +- **Error recovery**: Graceful handling of syntax errors with detailed diagnostics |
| 45 | +- **Memory efficient**: Streaming parsing for large files |
| 46 | + |
| 47 | +#### Plugin System |
| 48 | +- **File-based plugins**: Load plugins from JavaScript/TypeScript files |
| 49 | +- **Inline plugin objects**: Direct plugin integration in code |
| 50 | +- **Type transformation hooks**: Customize how Luau types map to TypeScript |
| 51 | +- **Interface modification**: Add, remove, or modify generated interface properties |
| 52 | +- **Post-processing**: Transform final generated TypeScript code |
| 53 | +- **Plugin registry**: Manage multiple plugins with validation |
| 54 | +- **Hot reloading**: Plugin cache management for development |
| 55 | + |
| 56 | +#### CLI Tools |
| 57 | +- **File conversion**: `luats convert file.lua -o file.d.ts` |
| 58 | +- **Directory processing**: `luats convert-dir src/lua -o src/types` |
| 59 | +- **Watch mode**: Auto-regeneration on file changes with `--watch` |
| 60 | +- **Syntax validation**: `luats validate` for error checking |
| 61 | +- **Configuration files**: Support for `luats.config.json` with rich options |
| 62 | +- **Glob patterns**: Include/exclude file patterns for batch processing |
| 63 | + |
| 64 | +#### Developer Experience |
| 65 | +- **Comprehensive TypeScript definitions**: Full type safety for all APIs |
| 66 | +- **Error handling**: Detailed error messages with line/column information |
| 67 | +- **Snapshot testing**: Fixture-based testing for regression prevention |
| 68 | +- **Performance optimizations**: Efficient parsing and generation algorithms |
| 69 | +- **Documentation generation**: Generate docs from parsed code structures |
| 70 | + |
| 71 | +#### Configuration Options |
| 72 | +- **Type generation**: `useUnknown`, `interfacePrefix`, `includeSemicolons` |
| 73 | +- **Comment handling**: `preserveComments`, `commentStyle` (jsdoc/inline) |
| 74 | +- **Code formatting**: Indentation, spacing, and style preferences |
| 75 | +- **Plugin configuration**: File paths and plugin-specific options |
| 76 | +- **Include/exclude patterns**: Fine-grained control over processed files |
| 77 | + |
| 78 | +#### Testing & Quality |
| 79 | +- **47 comprehensive tests** covering all major functionality |
| 80 | +- **100% test pass rate** with robust edge case handling |
| 81 | +- **Snapshot testing** for generated TypeScript output validation |
| 82 | +- **Plugin system testing** with both file and object-based plugins |
| 83 | +- **CLI integration tests** with temporary file handling |
| 84 | +- **Error scenario testing** for graceful failure handling |
| 85 | + |
| 86 | +#### Examples & Documentation |
| 87 | +- **Plugin examples**: ReadonlyPlugin, CustomNumberPlugin, TypeMapperPlugin |
| 88 | +- **CLI usage examples**: Common workflows and configuration patterns |
| 89 | +- **API examples**: Programmatic usage for all major features |
| 90 | +- **Roblox integration**: Specific examples for game development workflows |
| 91 | + |
| 92 | +### Technical Details |
| 93 | +- **Lexer**: 4 specialized tokenizers (Number, String, Identifier, Comment) |
| 94 | +- **Parser**: Recursive descent with operator precedence and error recovery |
| 95 | +- **Type System**: 15+ AST node types with full TypeScript definitions |
| 96 | +- **Plugin Architecture**: 4 transformation hooks (transformType, transformInterface, process, postProcess) |
| 97 | +- **CLI**: 4 main commands with configuration file support |
| 98 | +- **Exports**: Modular imports for tree-shaking and selective usage |
| 99 | + |
| 100 | +This release establishes LuaTS as a production-ready tool for Lua/Luau to TypeScript workflows, with particular strength in Roblox development, legacy code integration, and type-safe API definitions. |
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