refactor(es/helpers): Remove unnecessary exports

[devjiwonchoi]

Description:

Helper methods were exporting twice, _ and it's own function name.
We can map the build script to export _ as it's own name (filename).
Therefore we export only once as _, and map the name on the build script.

// helpers/_foo.js

function _foo() {
  // ...
}

export { _foo as _ }

// index.js

// We know the func name will be `_foo` based on the filename.
export { _ as _foo } from '_foo.js'

Closes #9203

[codspeed-hq]

CodSpeed Performance Report

Merging #9225 will not alter performance

_{Comparing devjiwonchoi:jwn/4wbj (4fae2e0) with devjiwonchoi:jwn/4wbj (f3a3141)}

Summary

✅ 173 untouched benchmarks

[magic-akari]

We also need to update code at packages/helpers/scripts/ast_grep.js, ensuring that the generation logic for CJS is correct.

[devjiwonchoi]

Oh, yes! Working on it. 😆

[magic-akari]

There is some code logic that needs to be referred to at https://ast-grep.github.io. If you need help, please let us know.

[kdy1]

Thank you!

---

swc-bump:

• dbg-swc

[kdy1]

I'll merge once @magic-akari approves this PR

[magic-akari]

There are some helpers from the 'tslib', should they be processed in the same way? @kdy1

[kdy1]

Those are fine. My point was that extra exports are useless, but creates extra entries for some tree shaking thing in turbopack.

[devjiwonchoi]

@magic-akari Thank you for so detailed, kind review!!