Debugging
A subprocess can be entered in the course of debugging.Start a debugging session
To debug CoffeeScript, TypeScript, and Dart code, you need to generate a source map for it. This will set the correspondence between lines in your original code and in the generated JavaScript code. If no source map is generated, your breakpoints will not be recognized and processed correctly.
Define a run/debug configuration for the application to be debugged.
Create a breakpoint .
Click the Debug icon (
). Read more about debugging sessions in Starting the Debugger Session.
After you've started a debug session, the 
icon that marks the Debug tool window toggles to 
to indicate that the debug process is active.
Debug
After you have configured a run configuration for your project, you can launch it in debug mode by pressing Shift+F9.
In the Debug tool window you can see the list of frames and threads with their states, variables and watches. When you select a frame, you see the variables corresponding to the selected frame.
Breakpoints
Customize breakpoint settings
To customize breakpoint settings, press Ctrl+Shift+F8. To see all breakpoints in the project (with additional settings), click More or press the same shortcut Ctrl+Shift+F8 again.
Do not suspend code execution
Use action breakpoints to evaluate a variable at a particular line of code without suspending code execution. To create an action breakpoint, click the gutter while pressing Shift.
Create a temporary breakpoint
To create a breakpoint that stops only once, click the left gutter while holding Shift+Alt. For more information, refer to the section Breakpoints.
Disable breakpoints
To disable a breakpoint, click the breakpoint while pressing Alt. Refer to the section Breakpoints for details.
Debugger session
Smart step into
Sometimes it happens that you stay at a line and want to step into a particular method but not the first one that will be invoked. In this case use Smart step into by pressing Shift+F7 to choose a particular method. This is a great time-saver.
Refer to the section Choosing a Method to Step Into for details.
Run to cursor
To stop code execution at the cursor position without adding another breakpoint, click the Run to cursor icon(
) or press Alt+F9.
The icon is described in the toolbar reference of the Debug tool window.
Evaluate expression
While in debug mode, you can evaluate any expression by pressing Alt+F8.
This tool provides code completion just as in the editor so it’s very easy to enter any expression:
Refer to the section Evaluating Expressions for details.
Settings
Configuring debugger settings
To change debugger settings, click . In the Settings menu, click .
Useful debugger shortcuts
Action | Hotkey |
|---|---|
| Toggle breakpoint | Ctrl+F8 |
| Resume program | F9 |
| Step over | F8 |
| Step into | F7 |
Stop | Ctrl+F2 |
| View breakpoint details/all breakpoints | Ctrl+Shift+F8 |
Debug code at caret | Shift+F9 (within the main method), or Shift+Alt+F9 |