Deployment Integrations

VSCode Plugin

Thundra Debugger on VSCode


  • Install the extension from the VSCode marketplace.

  • Sign up for Thundra and select the Thundra Debugger option to receive your authentication key. If you’ve already signed up, you can get your key from the settings page.

  • Open the Command Palette (⇧⌘P) and select the Thundra: Edit Configuration command to modify the configuration file.

Thundra Debugger Commanda Palette
  • Set your authentication key to the variable “authToken” in your Thundra configuration file.

"profiles": {
"default": {
"debugger": {
"authToken": <set-your-thundra-auth-token>,
"sessionName": "default",
"brokerHost": "",
"brokerPort": 443

How to use

  • Set a debugging point on your AWS Lambda function.

    Execute the command Thundra: Start Debugger to start the debugging session. (Alternatively, you can click on the Start Thundra Debugger button on the Status Bar.)

VSCode Status Bar
  • Now invoke your AWS Lambda function to hit on the debugging point.

  • The debugging session ends when your AWS Lambda function times out. You can update the timeout of your function for longer sessions.

  • To manage your Thundra Debugger profiles:

    • Open the Thundra configuration file by executing the command Thundra: Edit Configuration.

    • Add new profiles to the file as shown below.

Thundra Debugger Profile
  • You can change your active profile by executing the command Thundra: Change active profile to use the Thundra Debugger with different configurations.

Change Active Profile

In order to quickly start with a different session name:

  • Execute the command Thundra: Start Debugger (with a session name)

  • Enter a unique session name (this will not make changes to the configuration file).

  • Invoke the Lambda function and start debugging.




Thundra: Start Debugger

Starts the debugger with the current profile's settings.

Thundra: Start Debugger (with a session name)

Starts the debugger with the given session name.

Thundra: Change active profile

Changes the active profile to the one given in your configuration file.

Thundra: Edit configuration

Opens the file containing your debugger configuration so you can edit it.

You can access all of the above commands from the command palette (Cmd+Shift+P or Ctrl+Shift+P).

When you start the Thundra Debugger in VSCode, if you are getting the "Error processing attach: Error: Could not connect to debug target at ..." error; you can add "debug.javascript.usePreview": false configuration in your settings.json file. You can check out how to find settings.json file here.