test(es/codegen): Add a test for sourcemap

[kdy1]

Description:

Ensure that the codegen and source map generation are correct for vercel/next.js#75537

Related issue:

• Turbopack: codegen modules without whitespace vercel/next.js#75537

[changeset-bot]

⚠️ No Changeset found

Latest commit: 103b1bc

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[codspeed-hq]

CodSpeed Performance Report

Merging #10025 will degrade performances by 5.48%

_{Comparing kdy1:srcmap (103b1bc) with main (6dab49a)}

Summary

⚡ 3 improvements
❌ 2 regressions
✅ 191 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	es/full/minify/libraries/lodash	185.4 ms	179.1 ms	+3.54%
⚡	es/full/minify/libraries/moment	108.1 ms	102.4 ms	+5.57%
❌	es/minifier/libs/jquery	127.6 ms	135 ms	-5.48%
⚡	es/minifier/libs/moment	86.2 ms	79.9 ms	+7.8%
❌	es/minifier/libs/react	24.9 ms	25.7 ms	-3.31%