`tsc` loses the class name in sourcemap

🔎 Search Terms

• stack trace
• lose class name

🕗 Version & Regression Information

Now I use TypeScript v5.2.2. This is not a critical bug, so I did not pay attention when it appeared.

💻 Code

// tmp.ts
class MyClass {
  static staticMethod() {
    throw new Error('Error in static method');
  }
}

MyClass.staticMethod();

Enable sourceMap in tsconfig, compile this code with tsc and then run compiled file with --enable-source-maps option:

tsc tmp.ts
node --enable-source-maps dist/tmp.js

🙁 Actual behavior

Error: Error in static method
    at Function.staticMethod

As you can see, the class name is missing from the stack trace. This bug appears only when the error occurs in static methods.

🙂 Expected behavior

Error: Error in static method
    at MyClass.staticMethod

Reproduce the issue with tmp.ts, sourceMap enabled in tsconfig, tsc, and Node's --enable-source-maps option. Compare the stack trace from dist/tmp.js with the expected MyClass.staticMethod output, then trace the compiler's source-map handling for static methods. Done means the class name is preserved in the reported stack trace.