GoogleChromeLabs/ndbArchived
Ndb
ndb is a suite of development tools for Node.js that provides runtime inspection, performance profiling, and process management. It functions as a debugger that connects Node.js execution environments to the Chrome browser debugging interface for visual state management and breakpoint control.
The tool is distinguished by its ability to detect and attach to spawned child processes, maintaining debugging visibility across multiple process boundaries. It also integrates a source editor that allows users to modify code directly within the debugging interface and save those changes to disk during an active runtime session.
The platform includes performance profiling utilities to analyze memory usage and execution timing. Additional capabilities cover source map resolution, the filtering of third-party modules to isolate local source code, and the synchronization of active memory states with physical files.
Features
- Node.js Debuggers - Integrates Node.js execution with Chrome DevTools for visual inspection and runtime state management.
- Automatic Child - Detects and connects to spawned child processes to maintain debugging visibility across process boundaries.
- Child Process Debugging - Provides automatic debugging attachment for spawned child processes to maintain visibility across process boundaries.
- DevTools Interfaces - Uses the Chrome DevTools interface as the primary visual debugger for Node.js runtime state.
- JavaScript Engine Inspector Integration - Connects directly to the V8 engine inspector to enable breakpoints, stepping, and internal state inspection.
- Performance Profilers - Provides tools for analyzing memory usage and execution timing to identify bottlenecks in Node.js applications.
- Runtime Performance Profiling - Analyzes execution time and memory usage to identify and resolve system bottlenecks within Node.js applications.
- Multi-Process Debugging - Maintains debugging visibility across multiple Node.js process boundaries by detecting and connecting to child processes.
- Application Performance Profiling - Analyzes execution time and memory usage through sampling to identify and resolve system bottlenecks.
- Live Source Editing - Allows modifying source code directly within the debugging interface and saving changes to disk during an active session.
- Debugger State Syncing - Maps active debugger memory state back to physical files to enable direct source editing and saving.
- Source Map Generators - Translates compiled or transformed code back to original source files for accurate line-by-line debugging.
- Source Script Filtering - Hides third-party modules to allow developers to focus on local source code during debugging.
- External Module Filtering - Filters out third-party modules and internal libraries to isolate and focus on local source code.
- Integrated Source Editors - Integrates a source editor that allows modifying and saving files directly from the debugging interface.
- Node.js Process Managers - Manages the lifecycle and attachment of child processes to maintain debugging visibility.
- Debugging Tools - Improved Chrome DevTools debugging experience.
- Platform Adapters - Improved debugging experience for Node.js applications.
