Problem

Dependency files that:

• include ESM dynamic imports
• has sourcemaps associated (generated by TSC)

show up in Error stack traces:

• with .js extension (as opposed to .ts)
• with wrong line numbers
• and with their real file path instead of the original path based on the sourcemap

i.e. their source maps are ignored.

Expected behavior

All dependency files that has sourcemaps associated should show up in Error stack traces with their original path, extension and line numbers.

Minimal reproduction URL

https://github.com/BenceSzalai/tsx-sm-issue

Version

v2.5.5

Node.js version

v18.17.0 / v20.5.1 (v16 is not affected)

Package manager

npm

Operating system

macOS

Contributions

• I plan to open a pull request for this issue
• I plan to make a financial contribution to this project

Notes

Originally opened against TXS, but it looks like it is an issue with ESM Loader.