Compare webpack and esbuild builds

compare.js

/* package.json
{
	"name": "compare",
	"private": true,
	"version": "1.0.13",
	"devDependencies": {
		"acorn": "^8.11.3",
		"acorn-walk": "^8.3.2"
	},
	"scripts": {
		"compare": "node ./compare.js"
	}
}
*/

const acorn = require('acorn');
const walk = require('acorn-walk');
const fs = require('fs');

fs.readdirSync('./exports.webpack').forEach(
	file => {
		console.log('');
		console.log(file);

		const webpack = acorn.parse(
			fs.readFileSync(`./exports.webpack/${file}`, 'utf-8'), 
			{ecmaVersion: 2020, sourceType: 'module'}
		);

		const esbuild = acorn.parse(
			fs.readFileSync(`/home/ivan/Liferay/Portal/liferay-portal/modules/apps/frontend-js/frontend-js-dependencies-web/build/node/packageRunBuild/resources/__liferay__/exports/${file}`, 'utf-8'), 
			{ecmaVersion: 2020, sourceType: 'module'}
		);

		const anawebpack = analyze(webpack);
		const anaesbuild = analyze(esbuild);

		compare(anawebpack, anaesbuild);
	}

);

function analyze(ast) {
	const exported = {};
	const imported = {};

	walk.simple(ast, {
		ImportDeclaration(node) {
			imported[node.source.value] = true;
		},
		ExportAllDeclaration(node) {
			console.log(JSON.stringify(node,null,2))
		},
		ExportDefaultDeclaration(node) {
			console.log(JSON.stringify(node,null,2))
		},
		ExportNamedDeclaration(node) {
			node.specifiers.map(x => x.exported.name).forEach(x => exported[x] = true);
		},
	});

	return {
		imported,
		exported
	};
}

function compare(webpack, esbuild) {
	let common = [];

	Object.keys(webpack.exported).forEach(k => {
		if (esbuild.exported[k]) {
			common.push(k);
		}
	});

	common.forEach(k => {
		delete webpack.exported[k];
		delete esbuild.exported[k];
	});

	if (Object.keys(webpack.exported).length) {
		console.log(`  webpack only exports:\n${Object.keys(webpack.exported).map(l => `    ${l}`).join('\n')}`);
	}
	if (Object.keys(esbuild.exported).length) {
		console.log(`  esbuild only exports:\n${Object.keys(esbuild.exported).map(l => `    ${l}`).join('\n')}`);
	}

	common = [];

	Object.keys(webpack.imported).forEach(k => {
		if (esbuild.imported[k]) {
			common.push(k);
		}
	});

	common.forEach(k => {
		delete webpack.imported[k];
		delete esbuild.imported[k];
	});

	if (Object.keys(webpack.imported).length) {
		console.log(`  webpack only imports:\n${Object.keys(webpack.imported).map(l => `    ${l}`).join('\n')}`);
	}
	if (Object.keys(esbuild.imported).length) {
		console.log(`  esbuild only imports:\n${Object.keys(esbuild.imported).map(l => `    ${l}`).join('\n')}`);
	}

}