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Jest source maps not working

See original GitHub issue

Hey there!

I’m pretty new to TypeScript/jest and I spent hours in figuring out why line numbering in failing tests are wrong so please bear with me.

I’m not sure if I missed something or it’s an actual bug and I couldn’t find anything close to my problem online. When running install(), line numbering breaks, when commenting it out, everything works fine (but of course stack traces don’t work any more). It doesn’t matter if install() is run in test code or in imported production code, test line numbering always breaks.

I have set up a demo repo over here.

Thanks for your help!

Issue Analytics

State:
Created 3 years ago
Reactions:1
Comments:10

Top GitHub Comments

1reaction

stavalficommented, Feb 5, 2021

as a workaround:

if (!process.env.TEST_MODE) {
  require('source-map-support').install()
}

until this issue is fixed.

also, https://github.com/evanw/esbuild has impact as well because of this issue. probably https://github.com/swc-project/swc also.

1reaction

schw4rzlichtcommented, May 25, 2020

I just tested 0.5.0 and 0.5.18 and they both have the same problem.

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