Please do not confuse run/debug configurations with build configurations.
Create:
Use this dialog to create a configuration to be used for debugging JavaScript in applications running on the built-in or on an external web server and for debugging Dart web applications.
Debugging of JavaScript code is only supported in Google Chrome and in other Chromium-based browsers.
JavaScript Debug-specific configuration settingsItem
Description
URL
Debugging JavaScript:
In this field, specify the URL address of the HTML file that references the JavaScript to debug. For local debugging, type the URL in the format http://localhost:<built-in server port>/<project root>. The built-in server port (1024 or higher) is specified on the Web Browsers and Preview page of the Settings dialog.
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 Web Browsers and Preview page.
Browser
From this list, select Chrome or another browser from the Chrome family where your application will be debugged.
For Dart applications, the Dart code will be compiled into JavaScript through the dart2js or dartdevc tool. The tool is invoked automatically when you run or debug a Dart web application.
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 the initial page load.
Remote URLs of local files
Debugging JavaScript:
JetBrains Rider 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, JetBrains Rider itself "retrieves" the paths to local files by parsing the URL addresses of their copies on the server.
Debugging a Dart web application:
JetBrains Rider 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 Web Browsers and Preview page of the Settings dialog.
When you edit a run configuration (but not a run configuration template), you can specify the following options:
Item
Description
Name
Specify a name for the run configuration to quickly identify it among others when editing or running.
Allow multiple instances
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, JetBrains Rider suggests stopping the running instance and starting another one. This is helpful when a run 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 JetBrains Rider 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 solution as well as adjust default configurations templates.
Item
Shortcut
Description
Alt+Insert
Create a run/debug configuration.
Alt+Delete
Delete the selected run/debug configuration. Note that you cannot delete default configurations.
Ctrl+D
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.
Move into new folder / Create new folder. You can group run/debug configurations by placing them into folders.
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.
Before launchIn 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.
Item
Shortcut
Description
Alt+Insert
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 JetBrains Rider yet, add its definition.
Run Another Configuration: select to execute another run/debug configuration and wait until it finishes before starting the current configuration. If you want to run several configurations in parallel, use a compound run/debug configuration.
Build solution: select this option to build the solution before launching the configuration.
Run File Watchers: select this option to have JetBrains Rider apply all the currently active File Watchers.
Run Remote External tool: adds a remote SSH external tool.
Run Grunt task: select this option to run a Grunt task.
In the Grunt task dialog that opens, specify the Gruntfile.js where the required task is defined, select the task to execute, and specify the arguments to pass to the Grunt tool.
Specify the location of the Node.js interpreter, the parameters to pass to it, and the path to the grunt-cli package.
Run Gulp task: select this option to run a Gulp task.
In the Gulp task dialog that opens, specify the Gulpfile.js where the required task is defined, select the task to execute, and specify the arguments to pass to the Gulp tool.
Specify the location of the Node.js interpreter, the parameters to pass to it, and the path to the gulp package.
Run npm Script: select this option to execute an npm script.
In the NPM Script dialog that opens, specify the npm run/debug configuration settings.
Compile TypeScript: select to run the built-in TypeScript compiler and thus make sure that all the changes you made to your TypeScript code are reflected in the generated JavaScript files. In the TypeScript Compile Settings dialog that opens, select or clear the Check errors checkbox to configure the behaviour of the compiler in case any errors are detected:
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.
Alt+Delete
Click this icon to remove the selected task from the list.
Enter
Click this icon to edit the selected task. Make the necessary changes in the dialog that opens.
Alt+Up
Alt+Down
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.
07 July 2025
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