67 lines
2 KiB
JavaScript
67 lines
2 KiB
JavaScript
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#!/usr/bin/env node
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/**
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* Bundle size gate — TASK-DEBT-015
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* Fails the build if initial JS bundle exceeds 200KB gzipped.
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* Measures: index-*.js + vendor-react-*.js (critical path for first paint).
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*/
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import { readdirSync, readFileSync } from 'fs';
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import { createGzip } from 'zlib';
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import { dirname, join } from 'path';
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import { fileURLToPath } from 'url';
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const __dirname = dirname(fileURLToPath(import.meta.url));
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const DIST = join(__dirname, '../dist_verification/assets');
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const MAX_COMBINED_KB = 200;
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function gzipSize(bytes) {
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return new Promise((resolve, reject) => {
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const chunks = [];
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const gzip = createGzip();
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gzip.on('data', (chunk) => chunks.push(chunk));
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gzip.on('end', () => resolve(Buffer.concat(chunks).length));
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gzip.on('error', reject);
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gzip.end(bytes);
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});
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}
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async function main() {
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let dir;
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try {
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dir = readdirSync(DIST);
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} catch (e) {
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console.error('Run "npm run build" first. dist_verification/assets not found.');
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process.exit(1);
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}
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const indexFile = dir.find((f) => f.startsWith('index-') && f.endsWith('.js'));
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const vendorReactFile = dir.find((f) => f.startsWith('vendor-react-') && f.endsWith('.js'));
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let totalGzip = 0;
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const results = [];
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for (const file of [indexFile, vendorReactFile]) {
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if (!file) continue;
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const path = join(DIST, file);
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const bytes = readFileSync(path);
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const sizeGzip = await gzipSize(bytes);
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totalGzip += sizeGzip;
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results.push({ file, kb: (sizeGzip / 1024).toFixed(1) });
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}
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const totalKb = totalGzip / 1024;
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console.log('Bundle size (gzipped):');
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results.forEach((r) => console.log(` ${r.file}: ${r.kb} kB`));
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console.log(` Total (index + vendor-react): ${totalKb.toFixed(1)} kB`);
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if (totalKb > MAX_COMBINED_KB) {
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console.error(`\nFAIL: Initial bundle exceeds ${MAX_COMBINED_KB} kB (target: ORIGIN_PERFORMANCE_TARGETS §3.2)`);
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process.exit(1);
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}
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console.log(`\nPASS: Bundle under ${MAX_COMBINED_KB} kB limit.`);
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}
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main().catch((e) => {
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console.error(e);
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process.exit(1);
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});
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