Minimal reproduction for ts-jest/source-map-support bug.
Running yarn test will run two tests, one with import 'source-map-support/register'; and one without.
Both files source-map.ts and no-source-map.ts throw errors to produce a stack trace. The line numbers in the trace for no-source-map.ts are correct and those in source-map.ts are incorrect (i.e. removing import 'source-map-support/register'; fixes the issue).
In the source-map.ts the line number points to the line of the compiled source in dist/source-map.js even though it claims to be in the source of the typescript file.
I have observed this in a larger codebase too. I want to include source-map-support in my production files to get nice stack traces.
The output is:
/usr/bin/node /usr/lib/node_modules/yarn/bin/yarn.js test
yarn run v1.22.10
$ tsc --build && jest
FAIL src/source-map.test.ts
● tests › foo
bah
8 | return {a: 1}
9 | }
> 10 |
| ^
11 | export function blah() {
12 | throw new Error('bah')
13 | }
!!! line below is incorrect (should be line 12) !!!
at Object.blah (src/source-map.ts:10:11)
at src/source-map.test.ts:8:26
at Object.<anonymous> (src/source-map.test.ts:6:46)
FAIL src/no-source-map.test.ts
● tests › foo
bah
12 |
13 | export function blah() {
> 14 | throw new Error('bah')
| ^
15 | }
16 |
!!! line below is correct !!!
at Object.blah (src/no-source-map.ts:14:9)
at src/no-source-map.test.ts:5:5
at Object.<anonymous> (src/no-source-map.test.ts:4:15)
Test Suites: 2 failed, 2 total
Tests: 2 failed, 2 total
Snapshots: 0 total
Time: 0.877 s, estimated 2 s
Ran all test suites.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
Process finished with exit code 1