The first time the debugger encounters a breakpoint, you are asked to switch to the Debug perspective. Select Remember my decision to avoid this message in the future, and then click Yes. Eclipse switches to the Debug perspective which includes the views you need to effectively debug your code.
2. Debug a TypeScript Application
On the TypeScript>Compiler property page, ensure “Generate corresponding .map files” is checked to ensure source maps are generated.
Finally, to place breakpoints, simply open the TypeScript source in our TypeScript editor and place breakpoints like you normally would.
If your TypeScript is part of a Java EE application, follow the instructions in section 1 to start the debug session.
3. Debug a Node.js ApplicationTo debug Node.js applications, you must have Node.js installed. There are multiple ways to start the debugger.
4. Edit Debug Configurations
Tip: If you do not select a Server, you can debug a web application that is deployed on a remote server.