mirror of
https://github.com/openswarm-ai/openswarm.git
synced 2026-08-20 11:42:23 +02:00
Eric
8bc899ce74
- inventory: 607MB asar was ~605MB duplication (python-env 408MB + build-staging 197MB) - both already ship unpacked in resources/; runtime reads resources/, never the asar - add build.files exclusion -> asar ~607MB -> ~2MB; kills the 639MB cold-read on first launch - add inspect_asar.js inventory tool; validate asar size + boot on a packaged exe
58 lines
2.7 KiB
JavaScript
58 lines
2.7 KiB
JavaScript
// #9 item 4: inventory an app.asar without extracting it. Parses the asar header
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// (a Chromium Pickle: [u32 payloadSize][u32 headerSize] then [u32 payloadSize]
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// [u32 jsonLen][json...]) and reports total size, biggest top-level dirs, biggest
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// individual files, and trimmable categories (source maps, etc.).
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// Usage: node inspect_asar.js <path-to-app.asar>
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const fs = require('fs');
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const asar = process.argv[2];
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if (!asar) { console.error('usage: node inspect_asar.js <app.asar>'); process.exit(1); }
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const fd = fs.openSync(asar, 'r');
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const head = Buffer.alloc(8);
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fs.readSync(fd, head, 0, 8, 0);
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const headerSize = head.readUInt32LE(4); // size of the header pickle
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const hp = Buffer.alloc(headerSize);
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fs.readSync(fd, hp, 0, headerSize, 8);
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const jsonLen = hp.readUInt32LE(4); // string length inside the pickle
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const json = hp.slice(8, 8 + jsonLen).toString('utf8');
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const header = JSON.parse(json);
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fs.closeSync(fd);
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let total = 0, fileCount = 0;
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const byExt = {};
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const files = []; // {path, size}
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const topDirs = {}; // top-level entry -> size
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function walk(node, parts) {
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if (node.files) {
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for (const [name, child] of Object.entries(node.files)) walk(child, parts.concat(name));
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} else if (typeof node.size === 'number') {
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const p = parts.join('/');
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total += node.size; fileCount++;
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files.push({ p, size: node.size });
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const ext = (p.match(/\.[^./]+$/) || ['(none)'])[0].toLowerCase();
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byExt[ext] = (byExt[ext] || 0) + node.size;
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topDirs[parts[0]] = (topDirs[parts[0]] || 0) + node.size;
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}
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}
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walk(header, []);
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const mb = (b) => (b / 1048576).toFixed(1) + ' MB';
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const sortObj = (o) => Object.entries(o).sort((a, b) => b[1] - a[1]);
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console.log(`asar total: ${mb(total)} across ${fileCount} files\n`);
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console.log('=== biggest top-level entries ===');
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for (const [d, s] of sortObj(topDirs).slice(0, 15)) console.log(` ${mb(s).padStart(10)} ${d}`);
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console.log('\n=== biggest single files ===');
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for (const f of files.sort((a, b) => b.size - a.size).slice(0, 20)) console.log(` ${mb(f.size).padStart(10)} ${f.p}`);
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console.log('\n=== by extension (top 15) ===');
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for (const [e, s] of sortObj(byExt).slice(0, 15)) console.log(` ${mb(s).padStart(10)} ${e}`);
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console.log('\n=== trimmable categories ===');
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const cat = (re) => files.filter(f => re.test(f.p)).reduce((n, f) => n + f.size, 0);
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console.log(` source maps (*.map): ${mb(cat(/\.map$/))}`);
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console.log(` .ts/.tsx sources: ${mb(cat(/\.tsx?$/))}`);
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console.log(` markdown/license/readme: ${mb(cat(/(\.md|license|readme|changelog)/i))}`);
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console.log(` test/spec/__tests__: ${mb(cat(/(\/test\/|\/tests\/|__tests__|\.spec\.|\.test\.)/i))}`);
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console.log(` node_modules inside asar: ${mb(cat(/(^|\/)node_modules\//))}`);
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