Run and debug Angular applications

Create an npm run/debug configuration

1. Go to Run | Edit Configurations. Alternatively, select Edit Configurations from the Run widget on the toolbar.

   

   In the Edit Configurations dialog that opens, click the Add button () on the toolbar and select npm from the list.

2. In the Configuration tab of the Run/Debug Configurations: npm dialog that opens, specify the location of the package.json, the Node.js interpreter, and the package manager to use.

   In the Command field, select run from the list and then select the script to run from the Scripts list. Most likely it will be the default start script but you can configure another one in your package.json, for example, to run the application on a custom port.

   

3. Optionally:

   To open the application in the browser, update the configuration as follows: in the Browser / Live Edit tab, select the After launch checkbox, select the browser to open the application in, and specify the URL address at which the application wil run.

   If you are going to debug the application, select Google Chrome or another Chromium-based browser.

   

Run an application

1. From the list in the Run widget on the toolbar, select a run configuration of the type npm. This can be the autogenerated Angular CLI Server configuration or a custom one that you created yourself as described above.

2. Click .

   

3. Wait till the application is compiled and the development server is ready.

   The Run tool window or the Terminal shows the URL at which your application is running. If your application was generated with @angular/cli, the default URL is http://localhost:4200/. Click this link to view the application.

   

   Alternatively, enable JetBrains Rider to open the application on start as described above.

Run and debug an Angular application with a single npm run/debug configuration

1. Set the breakpoints in your code.

2. Create an npm configuration as described above.

3. In the Configuration tab of the Run/Debug Configurations: npm dialog that opens, specify the location of the package.json, the Node.js interpreter, and the package manager to use.

   In the Command field, select run from the list and then select the script to run from the Scripts list. Most likely it will be the default start script but you can configure another one in your package.json, for example, to run the application on a custom port.

   

4. In the Browser / Live Edit tab, select the After launch checkbox, select Google Chrome or another Chromium-based browser from the list, select the with JavaScript debugger checkbox, and then specify the URL at which your application will run.

   

5. Click Run.

   To re-run the configuration, select it from the list in the Run widget and click next to it.

   JetBrains Rider runs the application in the development mode and at the same time launches a debugging session.

   

6. When the first breakpoint is hit, switch to the Debug window and proceed as usual: step through the program, stop and resume program execution, examine it when suspended, explore the call stack and variables, set watches, evaluate variables, view actual HTML DOM, and so on.

Start debugging with a JavaScript Debug run/debug configuration

1. Set the breakpoints in your code.

2. Start the application in the development mode as described above and wait till the application is compiled and the development server is ready.

   The Run tool window or the Terminal shows the URL at which your application is running. Copy this URL to specify it later in the JavaScript Debug configuration.

   

3. Create a JavaScript Debug configuration. To do that, go to Run | Edit Configurations in the main menu, click , and select JavaScript Debug from the list.

   If you generated your application with Angular CLI, JetBrains Rider has already created a JavaScript Debug run/debug configuration with the default name Debug Application and the default URL http://localhost:4200. Select this run/debug configuration from the list under the JavaScript Debug node.

   

4. In the Run/Debug Configurations: JavaScript Debug dialog that opens, specify the name of the configuration and the URL address at which the application is running in the development mode. You can copy this URL in the Run tool window or in the Terminal, as described above.

   

5. Click Debug.

   To re-run the configuration, select it from the list in the Run widget and click next to it.

   

6. When the first breakpoint is hit, switch to the Debug window and proceed as usual: step through the program, stop and resume program execution, examine it when suspended, explore the call stack and variables, set watches, evaluate variables, view actual HTML DOM, and so on.

1. Set the breakpoints in your code.

2. Start the application in the development mode as described above and wait till the application is compiled and the development server is ready.

3. The Run tool window or the Terminal shows the URL at which your application is running. If your application was generated with @angular/cli, the default URL is http://localhost:4200/. Hold Ctrl+Shift and click this URL link. JetBrains Rider starts a debugging session with an automatically generated Angular Application configuration of the type JavaScript Debug.

   

   Alternatively, select the autogenerated Angular Application configuration from the list and click the Debug button next to the list.

   If you launched your application in the development mode from the New Terminal, you can just click the Start debugging in browser button next to the link.