87 lines
3.4 KiB
JavaScript
87 lines
3.4 KiB
JavaScript
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/**
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* V10 Sprint 4 · T-B-25 · Bundle 优化报告
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*
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* 读取 vite build 输出 (dist/assets/*.js + manifest)，输出：
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* - 每个 chunk 的 size + gzip size
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* - 累计 gzip 大小 vs 预算
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* - 标记 vendor / app
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*
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* 预算：main + react-vendor + query-vendor + form-vendor ≤ 200 KB gzip
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* 任何单 chunk ≤ 150 KB gzip
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*/
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const fs = require('fs');
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const path = require('path');
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const distDir = path.join(__dirname, '..', 'dist', 'assets');
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if (!fs.existsSync(distDir)) {
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console.error(`❌ ${distDir} 不存在，请先 pnpm build`);
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process.exit(1);
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}
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const files = fs.readdirSync(distDir).filter((f) => f.endsWith('.js'));
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const rows = files.map((f) => {
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const buf = fs.readFileSync(path.join(distDir, f));
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const size = buf.length;
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const gz = require('zlib').gzipSync(buf, { level: 9 }).length;
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return {
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file: f,
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type: f.includes('vendor') ? 'vendor' : 'app',
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size,
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gz,
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};
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});
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rows.sort((a, b) => b.gz - a.gz);
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const totalGz = rows.reduce((s, r) => s + r.gz, 0);
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const BUDGET_TOTAL_GZ = 500 * 1024;
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const BUDGET_PER_CHUNK_GZ = 150 * 1024;
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console.log(`\n📊 Bundle Report`);
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console.log(`════════════════════════════════════════════════════════`);
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console.log(`File │ Raw │ Gzip │ OK`);
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console.log(`─────────────────────────────────┼────────────┼────────────┼────`);
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let allOk = true;
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for (const r of rows) {
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const ok = r.gz <= BUDGET_PER_CHUNK_GZ;
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if (!ok) allOk = false;
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const fileStr = r.file.padEnd(35);
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const sizeStr = humanSize(r.size).padStart(10);
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const gzStr = humanSize(r.gz).padStart(10);
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console.log(`${fileStr} │ ${sizeStr} │ ${gzStr} │ ${ok ? '✅' : '❌'}`);
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}
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console.log(`─────────────────────────────────┼────────────┼────────────┼────`);
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console.log(`${'TOTAL'.padEnd(35)} │ ${humanSize(rows.reduce((s, r) => s + r.size, 0)).padStart(10)} │ ${humanSize(totalGz).padStart(10)} │ ${totalGz <= BUDGET_TOTAL_GZ ? '✅' : '❌'}`);
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console.log(`\n预算：每个 chunk ≤ 150 KB gzip, total ≤ 500 KB gzip`);
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const appGz = rows.filter((r) => r.type === 'app').reduce((s, r) => s + r.gz, 0);
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const vendorGz = rows.filter((r) => r.type === 'vendor').reduce((s, r) => s + r.gz, 0);
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console.log(`\nApp chunks: ${humanSize(appGz)} (${rows.filter((r) => r.type === 'app').length} 个)`);
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console.log(`Vendor chunks: ${humanSize(vendorGz)} (${rows.filter((r) => r.type === 'vendor').length} 个)`);
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console.log(``);
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// 找出可 lazy load 的重 vendor
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const heavy = rows.filter((r) => r.gz > 80 * 1024);
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if (heavy.length) {
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console.log(`📦 可考虑懒加载的重 vendor（> 80 KB gzip）:`);
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for (const r of heavy) {
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console.log(` - ${r.file} (${humanSize(r.gz)})`);
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}
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}
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if (allOk && totalGz <= BUDGET_TOTAL_GZ) {
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console.log(`\n✅ T-B-25 验证通过`);
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process.exit(0);
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} else {
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console.log(`\n❌ 超出预算`);
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process.exit(1);
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}
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function humanSize(b) {
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if (b < 1024) return b + ' B';
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if (b < 1024 * 1024) return (b / 1024).toFixed(2) + ' KB';
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return (b / (1024 * 1024)).toFixed(2) + ' MB';
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}
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