Helper methods do not need to be export functions

[kdy1]

Describe the feature

_ export is enough, and we can rename them while exporting.

Babel plugin or link to the feature description

No response

Additional context

No response

[kdy1]

cc @magic-akari Is there a reason we use export function while we can use _?

[magic-akari]

It is used only within helpers. We can retain only the _ name.

[kdy1]

Guide for GFI

You need to patch

swc/packages/helpers/scripts/build.js

Lines 43 to 78 in 260f806

	modules.forEach((p) => {
	const importBinding = p.slice(0, -3);
	main_package_json.exports[`./_/${importBinding}`] = {
	import: `./esm/${importBinding}.js`,
	default: `./cjs/${importBinding}.cjs`,
	};
	const alias_package = {
	main: `../../cjs/${importBinding}.cjs`,
	module: `../../esm/${importBinding}.js`,
	};
	task_queue.push(
	fs.outputJSON(root("_", importBinding, "package.json"), alias_package, {
	encoding: "utf-8",
	spaces: 4,
	}),
	);
	if (importBinding === "index") {
	return;
	}
	task_queue.push(
	fs.outputFile(root("src", `${importBinding}.mjs`), re_export_esm(importBinding), {
	encoding: "utf-8",
	}),
	);
	indexESM.push(`export { ${importBinding} } from "./${importBinding}.js";`);
	cjs_module_lexer.push(`${importBinding}: null,`);
	cjs_export_list.push(`get ${importBinding}() {
	return require("./${importBinding}.cjs")._;
	},`);
	});

to use _ as the original name for re-export.

After then, you can patch files like https://github.com/swc-project/swc/blob/260f806d3e2a8350864c6e751949566f6a9654ff/packages/helpers/esm/_apply_decorated_descriptor.js to export only _

[swc-bot]

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