build: TS6 + oxc.rs

.github/workflows/test.yml

@@ -39,7 +39,7 @@ jobs:
       - name: Install dependencies
         run: yarn install --immutable
       - name: Lint
-        run: yarn prettier:check
+        run: yarn lint
       - name: Build
         run: yarn build
       - name: Test

.oxfmtrc.json

@@ -0,0 +1,9 @@
+{
+  "$schema": "./node_modules/oxfmt/configuration_schema.json",
+  "trailingComma": "all",
+  "tabWidth": 2,
+  "singleQuote": true,
+  "printWidth": 100,
+  "sortPackageJson": false,
+  "ignorePatterns": ["*.md", "*.yml", "*.yaml"]
+}

.oxlintrc.json

@@ -0,0 +1,10 @@
+{
+  "$schema": "./node_modules/oxlint/configuration_schema.json",
+  "plugins": ["eslint", "typescript", "unicorn", "oxc", "import"],
+  "categories": {
+    "correctness": "warn"
+  },
+  "options": {
+    "typeAware": true
+  }
+}

benchmark/profile-extract.ts

@@ -2,7 +2,7 @@ import fs from 'node:fs';
 import path from 'node:path';
 import os from 'node:os';
 import { generateFixture, FIXTURES } from './generate-fixtures.js';
-import { createPackage, extractAll, listPackage, getRawHeader, uncache } from '../lib/asar.js';
+import { createPackage, extractAll, uncache } from '../lib/asar.js';
 import { readArchiveHeaderSync, readFilesystemSync } from '../lib/disk.js';
 
 const config = FIXTURES.find((f) => f.name === 'many-small-files')!;
@@ -12,7 +12,9 @@ const archiveFile = path.join(tmpDir, 'test.asar');
 await createPackage(fixtureDir, archiveFile);
 const archiveSize = fs.statSync(archiveFile).size;
 
-console.log(`=== Extract breakdown: ${config.fileCount} files, archive ${(archiveSize / 1024).toFixed(0)} KB ===\n`);
+console.log(
+  `=== Extract breakdown: ${config.fileCount} files, archive ${(archiveSize / 1024).toFixed(0)} KB ===\n`,
+);
 
 // 1. Header parsing
 {
@@ -27,7 +29,9 @@ console.log(`=== Extract breakdown: ${config.fileCount} files, archive ${(archiv
   const filesystem = readFilesystemSync(archiveFile);
   const t = performance.now();
   const files = filesystem.listFiles();
-  console.log(`listFiles:            ${(performance.now() - t).toFixed(2)}ms (${files.length} entries)`);
+  console.log(
+    `listFiles:            ${(performance.now() - t).toFixed(2)}ms (${files.length} entries)`,
+  );
 
   // 3. getFile lookups
   const followLinks = process.platform === 'win32';
@@ -63,7 +67,9 @@ console.log(`=== Extract breakdown: ${config.fileCount} files, archive ${(archiv
     }
   }
   fs.closeSync(fd);
-  console.log(`readSync (individual): ${(performance.now() - t).toFixed(2)}ms (${totalRead} bytes)`);
+  console.log(
+    `readSync (individual): ${(performance.now() - t).toFixed(2)}ms (${totalRead} bytes)`,
+  );
 
   // 5. Read all data in one shot
   const t2 = performance.now();
@@ -139,13 +145,17 @@ console.log(`=== Extract breakdown: ${config.fileCount} files, archive ${(archiv
 
   let t = performance.now();
   for (const d of dirEntries) filesystem.insertDirectory(d, false);
-  console.log(`insertDirectory:      ${(performance.now() - t).toFixed(1)}ms (${dirEntries.length})`);
+  console.log(
+    `insertDirectory:      ${(performance.now() - t).toFixed(1)}ms (${dirEntries.length})`,
+  );
 
   t = performance.now();
   for (const f of fileEntries) {
     await filesystem.insertFile(f, () => fs.createReadStream(f), false, metadata[f]);
   }
-  console.log(`insertFile (all):     ${(performance.now() - t).toFixed(1)}ms (${fileEntries.length})`);
+  console.log(
+    `insertFile (all):     ${(performance.now() - t).toFixed(1)}ms (${fileEntries.length})`,
+  );
 }
 
 fs.rmSync(tmpDir, { recursive: true, force: true });

benchmark/profile-memory.ts

@@ -2,7 +2,7 @@ import fs from 'node:fs';
 import path from 'node:path';
 import os from 'node:os';
 import { generateFixture, formatBytes, FIXTURES } from './generate-fixtures.js';
-import { createPackage, createPackageFromFiles, uncache } from '../lib/asar.js';
+import { createPackage, createPackageFromFiles } from '../lib/asar.js';
 import { crawl } from '../lib/crawlfs.js';
 
 function getMemoryUsage() {
@@ -15,8 +15,8 @@ function printMem(label: string, before: NodeJS.MemoryUsage, after: NodeJS.Memor
   const rssDelta = after.rss - before.rss;
   console.log(
     `  ${label.padEnd(30)} ` +
-    `heap: ${formatBytes(after.heapUsed).padStart(10)} (Δ ${(heapDelta >= 0 ? '+' : '') + formatBytes(heapDelta)})  ` +
-    `rss: ${formatBytes(after.rss).padStart(10)} (Δ ${(rssDelta >= 0 ? '+' : '') + formatBytes(rssDelta)})`
+      `heap: ${formatBytes(after.heapUsed).padStart(10)} (Δ ${(heapDelta >= 0 ? '+' : '') + formatBytes(heapDelta)})  ` +
+      `rss: ${formatBytes(after.rss).padStart(10)} (Δ ${(rssDelta >= 0 ? '+' : '') + formatBytes(rssDelta)})`,
   );
 }
 
@@ -59,9 +59,11 @@ async function profileFixture(name: string) {
     printMem('createPackage (after)', before, after);
     console.log(
       `  ${'peak heap'.padEnd(30)} ${formatBytes(peakHeap).padStart(10)} (Δ +${formatBytes(peakHeap - before.heapUsed)})  ` +
-      `rss: ${formatBytes(peakRss).padStart(10)} (Δ +${formatBytes(peakRss - before.rss)})`
+        `rss: ${formatBytes(peakRss).padStart(10)} (Δ +${formatBytes(peakRss - before.rss)})`,
+    );
+    console.log(
+      `  ${'data / peak-heap-delta'.padEnd(30)} ${((peakHeap - before.heapUsed) / dataSize).toFixed(2)}x data size`,
     );
-    console.log(`  ${'data / peak-heap-delta'.padEnd(30)} ${((peakHeap - before.heapUsed) / dataSize).toFixed(2)}x data size`);
   }
 
   // Measure: createPackageFromFiles (pre-crawled)
@@ -90,9 +92,11 @@ async function profileFixture(name: string) {
     printMem('createPackageFromFiles (after)', before, after);
     console.log(
       `  ${'peak heap'.padEnd(30)} ${formatBytes(peakHeap).padStart(10)} (Δ +${formatBytes(peakHeap - before.heapUsed)})  ` +
-      `rss: ${formatBytes(peakRss).padStart(10)} (Δ +${formatBytes(peakRss - before.rss)})`
+        `rss: ${formatBytes(peakRss).padStart(10)} (Δ +${formatBytes(peakRss - before.rss)})`,
+    );
+    console.log(
+      `  ${'data / peak-heap-delta'.padEnd(30)} ${((peakHeap - before.heapUsed) / dataSize).toFixed(2)}x data size`,
     );
-    console.log(`  ${'data / peak-heap-delta'.padEnd(30)} ${((peakHeap - before.heapUsed) / dataSize).toFixed(2)}x data size`);
   }
 
   fs.rmSync(tmpDir, { recursive: true, force: true });

benchmark/profile-pack.ts

@@ -8,7 +8,8 @@ const config = FIXTURES.find((f) => f.name === 'many-small-files')!;
 const fixtureDir = generateFixture(config);
 
 // Get all files
-const allFiles = fs.readdirSync(fixtureDir, { withFileTypes: true, recursive: true })
+const allFiles = fs
+  .readdirSync(fixtureDir, { withFileTypes: true, recursive: true })
   .filter((e) => e.isFile())
   .map((e) => path.join(e.parentPath, e.name));
 

benchmark/profile.ts

@@ -3,7 +3,7 @@ import path from 'node:path';
 import os from 'node:os';
 import { generateFixture, FIXTURES } from './generate-fixtures.js';
 import { crawl } from '../lib/crawlfs.js';
-import { createPackage, createPackageFromFiles, extractAll, uncache } from '../lib/asar.js';
+import { createPackageFromFiles, extractAll, uncache } from '../lib/asar.js';
 
 const config = FIXTURES.find((f) => f.name === 'many-small-files')!;
 const fixtureDir = generateFixture(config);
@@ -48,7 +48,8 @@ console.log('=== Profiling many-small-files (10,000 x ~256B = 2.4MB) ===\n');
   const { getFileIntegrity } = await import('../lib/integrity.js');
 
   // Hash 10,000 small files via streams
-  const files = fs.readdirSync(fixtureDir, { withFileTypes: true, recursive: true })
+  const files = fs
+    .readdirSync(fixtureDir, { withFileTypes: true, recursive: true })
     .filter((e) => e.isFile())
     .map((e) => path.join(e.parentPath, e.name));
 
@@ -76,7 +77,8 @@ console.log('=== Profiling many-small-files (10,000 x ~256B = 2.4MB) ===\n');
 // Profile: how much time is file I/O vs stream setup?
 {
   console.log('--- STREAM vs BUFFER READ ---');
-  const files = fs.readdirSync(fixtureDir, { withFileTypes: true, recursive: true })
+  const files = fs
+    .readdirSync(fixtureDir, { withFileTypes: true, recursive: true })
     .filter((e) => e.isFile())
     .map((e) => path.join(e.parentPath, e.name));
 
@@ -87,7 +89,10 @@ console.log('=== Profiling many-small-files (10,000 x ~256B = 2.4MB) ===\n');
       const s = fs.createReadStream(file);
       const chunks: Buffer[] = [];
       s.on('data', (c) => chunks.push(c as Buffer));
-      s.on('end', () => { Buffer.concat(chunks); resolve(); });
+      s.on('end', () => {
+        Buffer.concat(chunks);
+        resolve();
+      });
       s.on('error', reject);
     });
   }

benchmark/run.ts

@@ -15,13 +15,7 @@ import {
 } from '../lib/asar.js';
 import { crawl } from '../lib/crawlfs.js';
 import { getFileIntegrity } from '../lib/integrity.js';
-import {
-  FIXTURES,
-  generateFixture,
-  cleanFixtures,
-  formatBytes,
-  type FixtureConfig,
-} from './generate-fixtures.js';
+import { FIXTURES, generateFixture, formatBytes, type FixtureConfig } from './generate-fixtures.js';
 
 // ─── Benchmark harness ───────────────────────────────────────────────
 
@@ -85,9 +79,7 @@ async function benchmark(
 }
 
 function printResult(result: BenchmarkResult) {
-  const throughput = result.throughputMBps
-    ? ` | ${result.throughputMBps.toFixed(1)} MB/s`
-    : '';
+  const throughput = result.throughputMBps ? ` | ${result.throughputMBps.toFixed(1)} MB/s` : '';
   console.log(
     `  ${result.name.padEnd(40)} ` +
       `avg=${result.avgMs.toFixed(2).padStart(9)}ms  ` +
@@ -136,10 +128,7 @@ async function benchmarkCrawl(fixtureDir: string, config: FixtureConfig): Promis
   );
 }
 
-async function benchmarkPack(
-  fixtureDir: string,
-  config: FixtureConfig,
-): Promise<BenchmarkResult> {
+async function benchmarkPack(fixtureDir: string, config: FixtureConfig): Promise<BenchmarkResult> {
   const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'asar-bench-pack-'));
   const destFile = path.join(tmpDir, `${config.name}.asar`);
   const dataSize = getDirectorySize(fixtureDir);
@@ -359,7 +348,11 @@ async function main() {
   printSection('Generating fixtures');
   const fixtureDirs = new Map<string, string>();
   const activeFixtures = FIXTURES.filter(
-    (f) => !filterArg || f.name === filterArg || f.name.startsWith(filterArg + '-') || filterArg === 'all',
+    (f) =>
+      !filterArg ||
+      f.name === filterArg ||
+      f.name.startsWith(filterArg + '-') ||
+      filterArg === 'all',
   );
 
   for (const config of activeFixtures) {
@@ -368,9 +361,7 @@ async function main() {
     const elapsed = (performance.now() - start).toFixed(1);
     const totalSize = getDirectorySize(dir);
     const fileCount = getFileCount(dir);
-    console.log(
-      `  ${config.name}: ${fileCount} files, ${formatBytes(totalSize)} (${elapsed}ms)`,
-    );
+    console.log(`  ${config.name}: ${fileCount} files, ${formatBytes(totalSize)} (${elapsed}ms)`);
     fixtureDirs.set(config.name, dir);
   }
 

bin/asar.mjs

@@ -6,25 +6,35 @@
 import fs from 'node:fs';
 import path from 'node:path';
 
-const splitVersion = function (version) { return version.split('.').map(function (part) { return Number(part) }) }
-const requiredNodeVersion = splitVersion(packageJSON.engines.node.slice(2))
-const actualNodeVersion = splitVersion(process.versions.node)
+const splitVersion = function (version) {
+  return version.split('.').map(function (part) {
+    return Number(part);
+  });
+};
+const requiredNodeVersion = splitVersion(packageJSON.engines.node.slice(2));
+const actualNodeVersion = splitVersion(process.versions.node);
 
-if (actualNodeVersion[0] < requiredNodeVersion[0] || (actualNodeVersion[0] === requiredNodeVersion[0] && actualNodeVersion[1] < requiredNodeVersion[1])) {
-  console.error('CANNOT RUN WITH NODE ' + process.versions.node)
-  console.error('asar requires Node ' + packageJSON.engines.node + '.')
-  process.exit(1)
+if (
+  actualNodeVersion[0] < requiredNodeVersion[0] ||
+  (actualNodeVersion[0] === requiredNodeVersion[0] && actualNodeVersion[1] < requiredNodeVersion[1])
+) {
+  console.error('CANNOT RUN WITH NODE ' + process.versions.node);
+  console.error('asar requires Node ' + packageJSON.engines.node + '.');
+  process.exit(1);
 }
 
-program.version('v' + packageJSON.version)
-  .description('Manipulate asar archive files')
+program.version('v' + packageJSON.version).description('Manipulate asar archive files');
 
-program.command('pack <dir> <output>')
+program
+  .command('pack <dir> <output>')
   .alias('p')
   .description('create asar archive')
   .option('--ordering <file path>', 'path to a text file for ordering contents')
   .option('--unpack <expression>', 'do not pack files matching glob <expression>')
-  .option('--unpack-dir <expression>', 'do not pack dirs matching glob <expression> or starting with literal <expression>')
+  .option(
+    '--unpack-dir <expression>',
+    'do not pack dirs matching glob <expression> or starting with literal <expression>',
+  )
   .option('--exclude-hidden', 'exclude hidden files')
   .action(function (dir, output, options) {
     options = {
@@ -34,50 +44,51 @@
       version: options.sv,
       arch: options.sa,
       builddir: options.sb,
-      dot: !options.excludeHidden
-    }
-    createPackageWithOptions(dir, output, options).catch(error => {
-      console.error(error)
-      process.exit(1)
-    })
-  })
+      dot: !options.excludeHidden,
+    };
+    createPackageWithOptions(dir, output, options).catch((error) => {
+      console.error(error);
+      process.exit(1);
+    });
+  });
 
-program.command('list <archive>')
+program
+  .command('list <archive>')
   .alias('l')
   .description('list files of asar archive')
   .option('-i, --is-pack', 'each file in the asar is pack or unpack')
   .action(function (archive, options) {
     options = {
-      isPack: options.isPack
-    }
-    const files = listPackage(archive, options)
+      isPack: options.isPack,
+    };
+    const files = listPackage(archive, options);
     for (const i in files) {
-      console.log(files[i])
+      console.log(files[i]);
     }
-  })
+  });
 
-program.command('extract-file <archive> <filename>')
+program
+  .command('extract-file <archive> <filename>')
   .alias('ef')
   .description('extract one file from archive')
   .action(function (archive, filename) {
-    fs.writeFileSync(path.basename(filename),
-      extractFile(archive, filename))
-  })
+    fs.writeFileSync(path.basename(filename), extractFile(archive, filename));
+  });
 
-program.command('extract <archive> <dest>')
+program
+  .command('extract <archive> <dest>')
   .alias('e')
   .description('extract archive')
   .action(function (archive, dest) {
-    extractAll(archive, dest)
-  })
+    extractAll(archive, dest);
+  });
 
-program.command('*', { hidden: true})
-  .action(function (_cmd, args) {
-    console.log('asar: \'%s\' is not an asar command. See \'asar --help\'.', args[0])
-  })
+program.command('*', { hidden: true }).action(function (_cmd, args) {
+  console.log("asar: '%s' is not an asar command. See 'asar --help'.", args[0]);
+});
 
-program.parse(process.argv)
+program.parse(process.argv);
 
 if (program.args.length === 0) {
-  program.help()
+  program.help();
 }