Issue in consumer.originalPositionFor method is returning the lineNumber of next line of code in NextJs

[ankit-meesho]

So, I have implemented the source-map package and I am trying to find the lineNumber and originalFile of the production error from the JS chunk. I have implemented in in create-react-app and it's working fine.

But when I am implementing it in NextJS it's returning the lineNumber of the next piece of code where the error is getting generated.
For eg: If the error is introduced in lineNumber 45 and then next piece of code is written in lineNumber 50, in between line number 45 and 50 is space then I am getting line Number as 50 from consumer.originalPositionFor.

Implementation Details:

Implemented Source Map package like this :
rawSourceMap -- is the source map file for JS chunk where the error occurred.
Getting this info from the first frame of the error stack trace.

const consumer = await new SourceMapConsumer(rawSourceMap);
const originalPosition = consumer.originalPositionFor({
  line: lineNumber,
  column: columnNumber,
});
return originalPosition;