fix(transformer/object-rest-spread): arrow function expressions with object rest patterns

[cod1r]

close: #12184

I couldn't figure out where exactly to put tests regarding object rest spread and arrow function transformation.

Probably somewhere underneath tasks/transform_conformance

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #12185 will not alter performance

_{Comparing cod1r:fix-object-rest-spread-with-arrow-fn-transform (9c20a77) with main (f130a0c)}

Summary

✅ 34 untouched benchmarks

[Dunqing]

You could put a test at https://github.com/oxc-project/oxc/blob/224775c056708f0df74e94903f3f2bf2fc0bb2a9/tasks/transform_conformance/tests/babel-plugin-transform-object-rest-spread/test/fixtures.

[Dunqing]

Have you found that your test fails? Generally, we use babelHelpers.helper instead of injecting a helper function in tests. By the way, you can run just test-transform --filter TEST-PATH to test what code it transformed.

[cod1r]

Oh ye sry, I was thinking there'd be some way to get the right output but didn't know how to get it. I just thought I'd use the babel playground and get it there by pasting in the input.js contents 😄 .

[Dunqing]

Oh ye sry, I was thinking there'd be some way to get the right output but didn't know how to get it. I just thought I'd use the babel playground and get it there by pasting in the input.js contents 😄 .

You can get a correct output from the Babel playground, but you should add @babel/plugin-external-helper. See Babel Playground

[Dunqing]

There is a conflict in oxc.snap.md, can you run just test-transform to update it?

[Dunqing]

Thanks!