fs: refactoring declaratively with the Array.fromAsync function

benchmark/fs/bench-glob.js

@@ -0,0 +1,45 @@
+'use strict';
+
+const common = require('../common');
+const fs = require('fs');
+const path = require('path');
+const assert = require('node:assert');
+
+const benchmarkDirectory = path.resolve(__dirname, '..', '..');
+
+const configs = {
+  n: [1e3],
+  dir: ['lib', 'test/parallel', 'benchmark'],
+  pattern: ['**/*', '*.js', '**/**.js'],
+  mode: ['async', 'sync'],
+  recursive: ['true', 'false'],
+};
+
+const bench = common.createBenchmark(main, configs);
+
+async function main(config) {
+  const fullPath = path.resolve(benchmarkDirectory, config.dir);
+  const { pattern, recursive, mode } = config;
+
+  let noDead;
+  bench.start();
+
+  for (let i = 0; i < config.n; i++) {
+    if (mode === 'async') {
+      noDead = await new Promise((resolve, reject) => {
+        fs.glob(pattern, { cwd: fullPath, recursive }, (err, files) => {
+          if (err) {
+            reject(err);
+          } else {
+            resolve(files);
+          };
+        });
+      });
+    } else {
+      noDead = fs.globSync(pattern, { cwd: fullPath, recursive });
+    }
+  }
+
+  bench.end(config.n);
+  assert.ok(noDead);
+}

lib/fs.js

@@ -25,6 +25,7 @@
 'use strict';
 
 const {
+  ArrayFromAsync,
   ArrayPrototypePush,
   BigIntPrototypeToString,
   Boolean,
@@ -3115,10 +3116,7 @@ function glob(pattern, options, callback) {
   // TODO: Use iterator helpers when available
   (async () => {
     try {
-      const res = [];
-      for await (const entry of new Glob(pattern, options).glob()) {
-        ArrayPrototypePush(res, entry);
-      }
+      const res = await ArrayFromAsync(new Glob(pattern, options).glob());
       callback(null, res);
     } catch (err) {
       callback(err);

typings/primordials.d.ts

@@ -111,6 +111,7 @@ declare namespace primordials {
   export const ArrayPrototype: typeof Array.prototype
   export const ArrayIsArray: typeof Array.isArray
   export const ArrayFrom: typeof Array.from
+  export const ArrayFromAsync: typeof Array.fromAsync
   export const ArrayOf: typeof Array.of
   export const ArrayPrototypeConcat: UncurryThis<typeof Array.prototype.concat>
   export const ArrayPrototypeCopyWithin: UncurryThis<typeof Array.prototype.copyWithin>