7. Utils

This section documents the command-line tools that ship with daslang: the live-reload application host, the test framework, the code coverage tool, the lint checker, the package manager, the MCP server for AI coding assistants, the cross-file duplicate-function detector and its AI judge, the runtime profiler and memory-leak tracker, and a cheat sheet for every built-in leak-detection mechanism.

• 7.1. daslang-live — Live-Reload Application Host
  • 7.1.1. Designing for live reload
  • 7.1.2. Quick start
  • 7.1.3. Mode detection
  • 7.1.4. Lifecycle
  • 7.1.5. Core API
  • 7.1.6. Reload annotations
  • 7.1.7. State persistence
  • 7.1.8. Helper modules
  • 7.1.9. Transports
  • 7.1.10. CLI reference
  • 7.1.11. Examples
  • 7.1.12. Tips and gotchas
• 7.2. dastest — Test Framework
  • 7.2.1. Quick start
  • 7.2.2. Running tests
  • 7.2.3. Command-line arguments
  • 7.2.4. Writing tests
  • 7.2.5. Assertions
  • 7.2.6. Sub-tests
  • 7.2.7. Benchmarks
  • 7.2.8. Benchmark output formats
  • 7.2.9. Folder filtering with .das_test
  • 7.2.10. Test file conventions
• 7.3. dascov — Code Coverage
  • 7.3.1. Quick start
  • 7.3.2. Usage modes
  • 7.3.3. Output formats
  • 7.3.4. Integration with dastest
  • 7.3.5. Programmatic use
• 7.4. lint — Paranoid, Performance, and Style
  • 7.4.1. Quick start
  • 7.4.2. Flags
  • 7.4.3. Repo-level defaults
  • 7.4.4. Compile policies
  • 7.4.5. Rule list
  • 7.4.6. Suppression
  • 7.4.7. Planned CI gate
• 7.5. daspkg — Package Manager
  • 7.5.1. Quick start
  • 7.5.2. Why daspkg?
  • 7.5.3. Commands
  • 7.5.4. Package sources
  • 7.5.5. The .das_package manifest
  • 7.5.6. Install flow
  • 7.5.7. Global modules
  • 7.5.8. Project layout
  • 7.5.9. Lock file
  • 7.5.10. Package index
  • 7.5.11. Use-case examples
  • 7.5.12. Version model
  • 7.5.13. Requirements
  • 7.5.14. Architecture
• 7.6. MCP Server — AI Tool Integration
  • 7.6.1. Quick start
  • 7.6.2. Tools
  • 7.6.3. ast-grep / tree-sitter setup
  • 7.6.4. Architecture
  • 7.6.5. Protocol
  • 7.6.6. Configuring Claude Code permissions
• 7.7. detect-dupe — Cross-file similar-function detector
  • 7.7.1. What it reports
  • 7.7.2. Quick start
  • 7.7.3. Flags
  • 7.7.4. Pattern filter
  • 7.7.5. Canonical form
  • 7.7.6. Modes
  • 7.7.7. Export / import
  • 7.7.8. MCP integration
  • 7.7.9. Implementation
  • 7.7.10. Notes
  • 7.7.11. Out of scope
• 7.8. find_dupe — AI judge for detect-dupe clusters
  • 7.8.1. Install
  • 7.8.2. API key
  • 7.8.3. Smoke test
  • 7.8.4. Workflow
  • 7.8.5. Flags
  • 7.8.6. Output schema
  • 7.8.7. MCP integration
  • 7.8.8. Pricing
  • 7.8.9. Implementation
  • 7.8.10. See also
• 7.9. Profiler — Runtime Profiling
  • 7.9.1. Quick start — performance profiler
  • 7.9.2. Quick start — memory-leak tracker
  • 7.9.3. Enabling the profiler
  • 7.9.4. Command-line flags
  • 7.9.5. Performance mode details
  • 7.9.6. Memory-leak mode details
  • 7.9.7. Writing your own profiler agent
  • 7.9.8. Performance impact
  • 7.9.9. See also
• 7.10. Memory Leak Detection — Diagnostics Cheat Sheet
  • 7.10.1. At a glance
  • 7.10.2. Picking the right tool
  • 7.10.3. 1. daslang leak profiler (--das-profiler-leaks)
  • 7.10.4. 2. C++ heap report (-track-allocations -heap-report)
  • 7.10.5. 3. gc_node leak detection (automatic)
  • 7.10.6. 4. Smart-pointer tracking (--track-smart-ptr <hexId>)
  • 7.10.7. 5. JobStatus / Channel / LockBox tracker
  • 7.10.8. 6. HandleRegistry (dasHV handle objects)
  • 7.10.9. See also