localization_gen 1.2.0

Type-safe localization generator for Flutter with nested JSON support, modular organization, parameter interpolation, pluralization, gender/context forms, watch mode, multi-command CLI, field rename o [...]

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

1.2.0 - 2026-01-20

Fixed

• String escaping in generated Dart code: improved escaping to ensure translations render correctly and generated code always compiles when translations contain:
  • Backslashes (\\)
  • Dollar signs ($) to prevent unintended Dart string interpolation
  • Single quotes (')

Added

• Writer regression tests: added coverage to validate escaping and Unicode/symbol preservation in generated output.

Changed

• Examples:
  • Standardized example locales to English (en) and Indonesian (id) only (removed Spanish example locale).
  • Updated example JSON assets to include a broader set of real-world symbols/unicode samples.

Removed

• Removed temporary/extra symbol documentation files that were not intended to ship with the package.

1.1.0 - 2025-12-22

Added

• Field Rename Feature: Support for multiple naming conventions

  • New FieldRename enum with 6 naming options
  • field_rename configuration option in pubspec.yaml
  • Options: none, kebab, snake, pascal, camel, screamingSnake
  • Converts JSON keys to desired Dart naming convention
  • Supports consistent code style across projects
  • Fully tested with 18 comprehensive tests

• Makefile for Development: Convenient commands for common tasks

  • make help - Show all available commands
  • make install - Install dependencies
  • make test - Run all tests
  • make check - Run all checks (analyze + format + test)
  • make coverage - Generate test coverage report
  • make publish-dry - Test publication
  • And more (see make help for complete list)

• Enhanced Documentation:

  • Consolidated all markdown files (23 → 7 files, 70% reduction)
  • Added full GitHub repository URLs for easy navigation
  • Removed all emoticons for professional appearance
  • Consistent formatting across all documentation
  • Clear structure: README, CONTRIBUTING, CHANGELOG, examples, tests
  • Professional tone suitable for library package

• Test Suite Expansion:

  • Added test/model/field_rename_test.dart (18 tests)
  • Total test coverage: 82+ comprehensive tests
  • Test structure mirrors lib/src for easy validation
  • All tests organized by component
  • Updated test/all_test.dart runner

• Repository Navigation:

  • All documentation includes full GitHub URLs
  • Easy access to examples, issues, and documentation
  • Improved discoverability for contributors
  • Better pub.dev integration

Changed

• Version: Major feature addition (1.0.7 → 1.1.0)
• Documentation Structure: Streamlined from 23 to 7 essential markdown files
  • Root: README.md, CONTRIBUTING.md, CHANGELOG.md
  • Examples: 3 README files (overview, basic, modular)
  • Tests: 1 README file
• Test Organization: Restructured tests to mirror source structure
• Configuration: Added field_rename option to LocalizationConfig
• Package Description: Updated to include field rename feature

Fixed

• Test file corruption issues resolved
• Documentation consistency improved
• Example structure clarified
• All markdown files formatted professionally

Migration from 1.0.x

No breaking changes. New field_rename option is optional with default value none.

To use the new feature, add to your pubspec.yaml:

localization_gen:
  field_rename: snake  # Choose: none, kebab, snake, pascal, camel, screamingSnake

Notes

This release focuses on:

• Adding flexible naming convention support
• Improving documentation quality and navigation
• Expanding test coverage
• Maintaining backward compatibility

1.0.6 - 2025-12-16

Added

• Watch Mode: Auto-regenerate localization files when JSON files change

  • --watch flag for continuous development
  • --debounce option to customize regeneration delay (default: 300ms)
  • Monitors only .json files for changes
  • Clear console output showing file changes and regeneration status
  • Graceful shutdown with Ctrl+C

• Strict Validation: Ensure locale consistency across all translation files

  • strict_validation: true in config to enable
  • Validates all locales have identical translation keys
  • Verifies parameters match across locales (order-independent)
  • Detailed error messages with missing/extra keys listed

• Enhanced Error Handling: Custom exception classes with detailed information

  • LocalizationException base class for all errors
  • JsonParseException for JSON parsing errors with file paths
  • LocaleValidationException for locale consistency errors
  • ParameterException for parameter mismatch errors
  • FileOperationException for file I/O errors
  • ConfigException for configuration errors
  • All exceptions include file paths, line numbers, and helpful context

• Comprehensive Test Suite: 30+ new tests added

  • Error handling tests for all exception types
  • Watch mode functionality tests
  • Locale validation tests
  • Parameter validation tests
  • Integration tests for end-to-end workflows

Changed

• CLI Interface: Made main function async to support watch mode
• JSON Parser: Added detailed error messages for malformed JSON
• Code Generation: Improved error reporting during generation
• Configuration: Added strict_validation option to LocalizationConfig

Improved

• Documentation: Comprehensive README updates

  • Watch mode usage and examples
  • Error handling guide with common errors and fixes
  • CLI options reference
  • Best practices section
  • Troubleshooting guide

• Developer Experience:

  • Clear, actionable error messages
  • Warnings for unsupported value types
  • Better progress output during generation
  • Detailed validation feedback

Dependencies

• Added watcher: ^1.1.0 for file watching functionality

Breaking Changes

None - fully backward compatible with v1.0.5

Migration from 1.0.5

No migration needed - all existing code works without changes.

To use new features:

1. Enable watch mode: dart run localization_gen --watch
2. Enable strict validation: Add strict_validation: true to config

1.0.5 - 2025-12-15

Added

• Complete API Documentation: Added comprehensive dartdoc comments to all 43 public API elements (100% coverage)

  • ConfigReader class and methods with detailed examples
  • DartWriter class with all properties and methods documented
  • LocalizationItem, LocalizationConfig, and LocaleData with full property documentation
  • LocalizationGenerator with step-by-step generation process documentation
  • JsonLocalizationParser with nested JSON examples and usage patterns

• Example Directory: Added standalone examples following dart.dev package layout conventions

  • example/basic_usage.dart - Simple usage demonstration
  • example/custom_config.dart - Custom configuration example
  • example/programmatic_usage.dart - Advanced component usage
  • example/README.md - Comprehensive quick start guide
  • All examples are runnable with dart run example/FILENAME.dart

Changed

• Example Structure: Reorganized example directory to follow official Dart package layout guidelines
  • Simple standalone examples now at root level of example/
  • Complex Flutter applications remain in subdirectories (default/, modular/, monorepo/)
  • Improved discoverability and learning path for users

Fixed

• Code Formatting: Fixed all Dart formatting issues across the entire codebase
  • All source files properly formatted with dart format
  • Zero linting errors, warnings, or formatting issues
  • Achieves perfect static analysis score (50/50 points)

Documentation

• Added detailed dartdoc comments with code examples and parameter descriptions
• Every public API element now has clear, comprehensive documentation
• Examples demonstrate both simple and advanced usage patterns
• Documentation follows Dart best practices and conventions

Quality Improvements

• Pub.dev Score: Achieved perfect 160/160 points
  • Documentation: 20/20 points (100% API coverage + examples)
  • Static Analysis: 50/50 points (no errors, warnings, lints, or formatting issues)
  • Platform Support: 20/20 points
  • Dependencies: 40/40 points
  • Valid pubspec: 30/30 points

Migration from 1.0.4

• No breaking changes
• All existing code continues to work without modifications
• This is a documentation and quality improvement release

1.0.4 - 2025-12-15

Changed

• IMPORTANT: Updated method parameter generation from positional to named parameters with required keyword
  • Old: welcome_user(String name)
  • New: welcome_user({required String name})
  • Migration recommended: All method calls with parameters should be updated to use named parameters
  • See MIGRATION_V1.0.4.md for detailed migration guide
  • See UPDATE_V1.0.4.md for complete update documentation

Why This Change?

• Better API clarity and self-documenting code
• Prevention of parameter order mistakes
• Improved IDE autocomplete support
• Future-proof for adding optional parameters

Impact

• Applications using methods with parameters will need to update their method calls
• Compiler will catch all locations that need updating with clear error messages
• This change improves code quality and maintainability

Documentation

• Added comprehensive update guide (UPDATE_V1.0.4.md)
• Updated all examples to use named parameters
• Updated README and QUICKSTART with new syntax
• Updated migration guide with detailed step-by-step instructions

1.0.3 - 2024-12-14

Fixed

• Updated GitHub repository branch references from 'main' to 'master' in documentation
  • Fixed links in README.md, EXAMPLES.md, and QUICKSTART.md
  • Updated example README files (default, modular, monorepo)
  • Ensures all documentation links point to correct repository branch

Documentation

• Corrected branch references across all documentation files for accurate navigation

1.0.2 - 2024-12-14

Fixed

• Removed deprecated 'authors' field from pubspec.yaml to comply with pub.dev publishing requirements
• Package now passes dart pub publish validation without warnings

Maintenance

• Cleaned up package metadata for pub.dev compatibility

1.0.1 - 2024-12-14

Added

• Support for modular localization files with flexible naming patterns
  • Optional per-module organization: app_{module}_en.json, core_{feature}_en.json
  • Maintains backward compatibility with standard app_en.json pattern
• Enhanced examples structure with three distinct use cases
  • Renamed example to examples directory
  • Added comprehensive unit tests for all example projects
  • Updated examples with multi-language support (English, Spanish, Indonesian)

Changed

• Improved key naming convention: all generated keys now use snake_case format
• Removed emoji icons from all documentation files for cleaner presentation
• Enhanced documentation with per-module localization examples
• Refactored example projects:
  • 1_default: Basic single-module setup
  • 2_modular: Feature-based modular organization
  • 3_monorepo: Multi-package monorepo architecture with app and core packages
• Updated all GitHub links to use alpinnz username
• Fixed broken documentation links for pub.dev compatibility

Fixed

• Corrected parameter interpolation output format: discount(value: "20") for {"discount": "Diskon {value}%"}
• Fixed hyperlinks in documentation that were not compatible with pub.dev rendering
• Improved example test coverage and reliability

Documentation

• All markdown files updated without emoji icons for professional appearance
• Enhanced modular localization pattern documentation
• Added clear examples for optional per-module file organization
• Updated READMEs for each example project with specific use case documentation

1.0.0 - 2024-12-14

Added

• Initial stable release
• Type-safe localization generation from JSON files
• Support for nested JSON structure
• Support for modular organization with multiple JSON files per module
• Parameter interpolation with named placeholders
• Customizable configuration via pubspec.yaml
• Context-aware localization access
• Multiple example applications:
  • Default example with nested JSON
  • Modular example with feature-based organization
  • Monorepo example with multi-package architecture
• Comprehensive test coverage (59 tests across all examples)
• Detailed documentation and guides
• CLI tool for code generation
• Support for multiple locales
• Type-safe delegate generation for Flutter

Features

• Nested JSON Support: Organize translations hierarchically
• Modular Files: Split translations by feature module
• Parameter Interpolation: Dynamic values in translations
• Type Safety: Compile-time checking of translation keys
• Customizable: Flexible configuration options
• Production Ready: Battle-tested with comprehensive examples

Documentation

• Complete README with usage guide
• QUICKSTART guide for rapid setup
• EXAMPLES guide comparing different approaches
• Individual READMEs for each example
• API documentation
• Migration guides

Testing

• Unit tests for core functionality
• Widget tests for all examples
• Integration tests for monorepo setup
• Test runner script for CI/CD
• 100% test pass rate

0.1.0 Development

Added

• Initial development version
• Basic JSON parsing
• Code generation prototype
• Experimental features

---

Version History

1.0.4

Named parameters with required keyword for better API design and code clarity.

1.0.3

Documentation fixes for branch references.

1.0.2

Metadata cleanup for pub.dev compliance.

1.0.1

Modular organization support and enhanced examples.

1.0.0

First stable release ready for production use. Includes comprehensive examples, documentation, and testing.

---

Upgrade Guide

From 1.0.3 to 1.0.4

1. Update your pubspec.yaml:

   dev_dependencies:
     localization_gen: ^1.0.4
   

2. Regenerate your localization files:

   dart run localization_gen:localization_gen
   

3. Update all method calls with parameters from positional to named:

   // Before
   appLocalizations.welcome('John')
      
   // After
   appLocalizations.welcome(name: 'John')
   

4. Test your application - the compiler will catch any missed conversions

For detailed migration guide, see MIGRATION_V1.0.4.md.

From 0.x to 1.0.0

1. Update your pubspec.yaml:

   dev_dependencies:
     localization_gen: ^1.0.0
   

2. Review your configuration (minimal changes needed)

3. Regenerate your localization files:

   dart run localization_gen:localization_gen
   

4. Update imports if needed (class names remain the same)

---

Future Roadmap

Planned for future releases:

• Additional language support features
• Performance optimizations
• More configuration options
• Additional examples