// Bundle-size budget gate. Sums the gzipped size of the built app JS and fails if it
// exceeds the budget — a guard against an accidental heavy dependency. The real
// transport build is ~69 KB gzip today; the budget leaves headroom.
import { readdirSync, readFileSync } from 'node:fs';
import { gzipSync } from 'node:zlib';

const BUDGET = 100 * 1024; // gzip bytes for app JS
const dir = 'dist/assets';

let total = 0;
for (const f of readdirSync(dir)) {
  if (!f.endsWith('.js')) continue;
  const gz = gzipSync(readFileSync(`${dir}/${f}`)).length;
  total += gz;
  console.log(`${f}: ${(gz / 1024).toFixed(1)} KB gzip`);
}
console.log(`total app JS: ${(total / 1024).toFixed(1)} KB gzip (budget ${BUDGET / 1024} KB)`);
if (total > BUDGET) {
  console.error('bundle exceeds size budget');
  process.exit(1);
}