Node Debugger with mixed Live and Time-Travel support
This debugger provides a launch configurations and support for mixing live and
time-travel debugging in Node.js 10+. In addition to the Visual Studio Code
debugger logic this extension provides:
Launch configuration for mixed live/time-travel debugging.
Notes
The debugger always uses the extension provided NodeChakraCore binaries. If
your application depends on a specific version of Node you may encounter
unusual behavior.
Time-Travel mode is not enabled until synchronous module loading has
completed and Node is running asynchronous event-loop code.
A directory called _ttd_log_ will be created in the project root to hold
the time-travel trace files. You may want to add this to your .gitignore.
Usage
Initiating Time-Travel
The TTD Enabled launch configuration will launch the application in live
debugging mode where you can debug just as with the regular Node debugger.
However, if you click the step back button it will configure and launch
an additional reverse execution debug target which allows you to step back
and reverse continue in your debugger as shown here:
Managing Live and Time-Travel Modes
The reverse execution mode can navigate the program execution from the point
in time where it was launched back to the start of the recording (2-4 seconds
prior). You can switch between live and reverse targets using the
multi-target selector drop-down. When you are done with the reverse mode
you can simply stop it and, if desired later, spawn a new session from the
live mode at any later point in time.
Adding a Launch Configuration
A launch configuration template providing combined live/step-back
functionality is provided and can be added via the Add Configuration dialog
as shown here:
License
Copyright (c) Microsoft Corporation. All rights reserved.
