Retain lines

[avaly]

Describe the feature

Babel has a feature where it can retain the same line numbers from the original source file.

This can be useful when you only use it to remove TS syntax, but keep the rest of the source file intact, and need to match line numbers from production error stack traces to original source code.

Is such a feature possible in swc, without degrading the performance?

Babel plugin or link to the feature description

https://babeljs.io/docs/en/options#retainlines

[avaly]

I am aware that sourcemaps are supposed to solve the original issue, but in large repositories with thousands of sourcemaps files uploading all of them on each release to a 3rd party error tracking software is slow.

The time benefits obtained by switched from babel to swc, get cancelled by having to deal with the sourcemaps.

[kwonoj]

Closing this for now, this could be a possible enhancement, but not something we are looking for immediately. We may revisit this later if things are changing.

[swc-bot]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.