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Changelog

All notable changes to Regex-LE will be documented here.

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

[1.7.1] - 2025-11-02

Documentation

  • LE Family Updates - Added Secrets-LE to the "More from the LE Family" section in README

[1.7.0] - 2025-11-02

Initial Public Release

Regex-LE brings zero-hassle regex extraction and validation to VS Code. Simple, reliable, focused.

Core Features

  • Automatic Pattern Extraction - Automatically finds all regex patterns in your code:
    • Literal regex patterns (/pattern/flags)
    • new RegExp() constructor calls
    • RegExp() function calls
    • Automatic deduplication of identical patterns
  • Pattern Testing - Test extracted patterns against file content with detailed results:
    • Match results with positions and groups
    • Execution time metrics
    • Performance scoring
    • ReDoS vulnerability warnings
  • Pattern Validation - Validate all patterns automatically:
    • Syntax validation
    • ReDoS detection with severity levels
    • Performance analysis
    • Comprehensive validation reports

Supported File Types

Regex-LE works universally on any text file format:

  • Programming Languages: JavaScript, TypeScript, Python, Ruby, Go, Rust, Java, C/C++, C#, PHP, Swift, Kotlin
  • Data Formats: JSON, YAML, TOML, XML, CSV
  • Web: HTML, CSS, SCSS, LESS, Sass
  • Configuration: .env, .ini, .cfg, .conf
  • Documentation: Markdown, Plain Text, Log Files
  • Shell Scripts: Bash, Zsh, PowerShell, Batch

Advanced Features

  • ReDoS Detection - Built-in vulnerability detection:
    • Nested quantifier detection
    • Exponential backtracking analysis
    • Complexity estimation
    • Security warnings before execution
  • Performance Scoring - Actionable optimization recommendations:
    • Execution time analysis
    • Pattern complexity scoring
    • Optimization suggestions
  • Safety Features:
    • Binary file detection
    • File size warnings (configurable thresholds)
    • Match limits to prevent excessive memory usage
    • Automatic safety checks

Commands

  • Extract Matches - Automatically extract all regex patterns (zero prompts)
  • Test Regex (Cmd/Ctrl+Alt+R) - Test patterns with detailed results
  • Validate Pattern - Validate all patterns and check for ReDoS vulnerabilities
  • Open Settings - Quick access to configuration
  • Help & Troubleshooting - In-editor documentation

Configuration

  • ReDoS detection (enabled/disabled, max depth)
  • Performance scoring (enabled/disabled)
  • Preview settings (auto-update, max matches)
  • Output preferences (side-by-side, clipboard copy)
  • Safety thresholds (file size, output limits)
  • Notification levels (silent, important, all)
  • Status bar visibility
  • Local telemetry logging

Infrastructure

  • TypeScript - Strict mode with comprehensive type safety
  • Testing - 81 unit tests across 5 test files with Vitest
  • Code Quality - Biome for linting and formatting
  • Localization - English language support (13 languages coming in v1.8.0)
  • Factory-based Architecture - Dependency injection and service factories
  • Immutable Data Structures - All exports frozen with Object.freeze()
  • Error Handling - Enterprise-grade error categorization and recovery

Performance

  • Built-in performance monitoring
  • Configurable thresholds
  • Efficient pattern extraction
  • Memory-optimized operations

Privacy

  • 100% local processing
  • No data collection
  • Optional local-only telemetry logging to Output panel