Debugging a Dart web application:
In this field, specify the URL address of the HTML file that references the Dart code to debug in the format: http://localhost:<built-in server port>/<project-name>/<relative path to the HTML file>. Make sure the port in this URL address is the same as the Built-in server port on the Debugger page.
From this list, select Chrome or another browser from the Chrome family where your application will be debugged.
Ensure breakpoints are detected when loading scripts
Select this checkbox to make sure that the breakpoints in the code executed on the page load are hit immediately. Note that this may slow down initial page load.
Remote URLs of local files
WebStorm displays this area only when you create a permanent debug configuration manually. For automatically generated temporary configurations the area is not shown.
In this area, map the local files to be involved in debugging to the URL addresses of their copies on the server.
File/Directory - in this read-only field, select the desired local file or directory in the project tree.
Remote URL - in this field, type the absolute URL address of the corresponding file or folder on the server.
These mappings are required only if the local folder structure under the project root differs from the folder structure on the server. If the structures are identical, WebStorm itself "retrieves" the paths to local files by parsing the URL addresses of their copies on the server.
Debugging a Dart web application:
WebStorm displays this area only when the port specified in the URL field is different from the port of the built-in Web server specified on the Debugger page of the Settings dialog.
When you edit a run configuration (but not a run configuration template), you can specify the following options:
Specify a name for the run/debug configuration to quickly identify it when editing or running the configuration, for example, from the Run popup Alt+Shift+F10.
Allow parallel run
Select to allow running multiple instances of this run configuration in parallel.
By default, it is disabled, and when you start this configuration while another instance is still running, WebStorm suggests to stop the running instance and start another one. This is helpful when a run/debug configuration consumes a lot of resources and there is no good reason to run multiple instances.
Store as project file
Save the file with the run configuration settings to share it with other team members. The default location is .idea/runConfigurations. However, if you do not want to share the .idea directory, you can save the configuration to any other directory within the project.
By default, it is disabled, and WebStorm stores run configuration settings in .idea/workspace.xml.
The tree view of run/debug configurations has a toolbar that helps you manage configurations available in your project as well as adjust default configurations templates.
Create a run/debug configuration.
Delete the selected run/debug configuration. Note that you cannot delete default configurations.
Create a copy of the selected run/debug configuration. Note that you create copies of default configurations.
The button is displayed only when you select a temporary configuration. Click this button to save a temporary configuration as permanent.
To create a folder, select the configurations within a category, click , and specify the folder name. If only a category is in focus, an empty folder is created.
Then, to move a configuration into a folder, between the folders or out of a folder, use drag or and buttons.
To remove grouping, select a folder and click .
Click this button to sort configurations in the alphabetical order.
In this area, you can specify tasks to be performed before starting the selected run/debug configuration. The tasks are performed in the order they appear in the list.
Click this icon to add one of the following available tasks:
Run External tool: select to run an external application. In the dialog that opens, select one or multiple applications you want to run. If it is not defined in WebStorm yet, add its definition. For more information, see External tools and External Tools.
Run Another Configuration: select to execute another run/debug configuration. In the dialog that opens, select the configuration to be run.
Run File Watchers: select this option to have WebStorm apply all the currently active File Watchers.
If the Check errors checkbox is selected, the compiler will show all the errors and the run configuration will not start.
If the Check errors checkbox is cleared, the compiler will show all the detected errors but the run configuration still will be launched.
Generate CoffeeScript Source Maps: select this option to generate the source maps for your CoffeeScript sources. In the dialog that opens, specify where your CoffeeScript source files are located.
Click this icon to remove the selected task from the list.
Click this icon to edit the selected task. Make the necessary changes in the dialog that opens.
Click these icons to move the selected task one line up or down in the list. The tasks are performed in the order that they appear in the list.
Show this page
Select this checkbox to show the run/debug configuration settings prior to actually starting the run/debug configuration.
Activate tool window
By default this checkbox is selected and the Run or the Debug tool window opens when you start the run/debug configuration.
Otherwise, if the checkbox is cleared, the tool window is hidden. However, when the configuration is running, you can open the corresponding tool window for it yourself by pressing Alt+4 or Alt+5.