feat(ast_tools): introduce #[js_only] attr for struct fields and converters

[overlookmotel]

Codegen for ESTree impls supports a #[ts] attribute on struct fields which only appear in TS-ESTree AST. Add a #[js_only] attribute which does the same thing in reverse - indicates a field only appears in the JS ESTree AST, and not in TS-ESTree.

This allows removing a custom serializer and hacky workaround for JSXOpeningFragment.

[overlookmotel]

• feat(ast/estree): add phase field to ImportExpression in ESTree AST #11165
• feat(ast_tools): introduce #[js_only] attr for struct fields and converters #11160 👈 (View in Graphite)
• feat(ast/estree): add phase field to ImportDeclaration in ESTree AST #11157
• main

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #11160 will not alter performance

_{Comparing 05-19-feat_ast_tools_introduce_js_only_attr_for_struct_fields_and_converters (9e90e00) with 05-19-feat_ast_estree_add_phase_field_to_importdeclaration_in_estree_ast (1bc8d29)}

Summary

✅ 34 untouched benchmarks
🆕 4 new benchmarks

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
🆕	linter[RadixUIAdoptionSection.jsx]	N/A	2.8 ms	N/A
🆕	linter[binder.ts]	N/A	146.5 ms	N/A
🆕	linter[cal.com.tsx]	N/A	1.3 s	N/A
🆕	linter[react.development.js]	N/A	53.7 ms	N/A

[Boshen]

Merge activity

• May 19, 10:14 AM EDT: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• May 19, 10:19 AM EDT: Boshen added this pull request to the Graphite merge queue.
• May 19, 10:24 AM EDT: The Graphite merge queue removed this pull request due to downstack failures on PR #11161.
• May 19, 2:24 PM UTC: The Graphite merge queue removed this pull request due to downstack failures on PR #11161.
• May 19, 11:01 AM EDT: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• May 19, 11:09 AM EDT: overlookmotel added this pull request to the Graphite merge queue.
• May 19, 11:21 AM EDT: Merged by the Graphite merge queue.