fs: refactoring declaratively with the Array.fromAsync function #54644

sonsurim · 2024-08-29T18:58:26Z

The following applies to this PR:

Replaced the for await...of loop with ArrayFromAsync().
Removed the need for manual array pushing using ArrayPrototypePush.
Added ArrayFromAsync type to primordials.d.ts file
Simplified the overall structure of the async function.

Array.fromAsync was defined relatively recently, but I used it because I knew it was officially adopted in Node.js v22. (MDN Document)

- Refs: nodejs#51912

codecov · 2024-08-29T20:48:47Z

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.24%. Comparing base (e70bd47) to head (defe492).
Report is 476 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #54644      +/-   ##
==========================================
+ Coverage   87.34%   88.24%   +0.90%     
==========================================
  Files         649      651       +2     
  Lines      182524   183875    +1351     
  Branches    35026    35862     +836     
==========================================
+ Hits       159420   162264    +2844     
+ Misses      16373    14896    -1477     
+ Partials     6731     6715      -16

Files with missing lines	Coverage Δ
lib/fs.js	`98.14% <100.00%> (+4.88%)`	⬆️

... and 237 files with indirect coverage changes

RedYetiDev · 2024-08-29T20:56:16Z

lib/fs.js

-      for await (const entry of new Glob(pattern, options).glob()) {
-        ArrayPrototypePush(res, entry);
-      }
+      const res = await ArrayFromAsync(new Glob(pattern, options).glob());


I'm not sure if there is a benchmark for this, but this should probably be benchmarked.

@RedYetiDev Thanks for the review!
There are currently no benchmarks, so I'll add them!

@RedYetiDev
Sorry for being late!
I added the fs glob benchmark f4025e5.

The benchmark results are as follows:

node-benchmark-compare compare-glob-result.csv confidence improvement accuracy (*) (**) (***) fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='benchmark' n=1 0.68 % ±1.50% ±2.01% ±2.62% fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='benchmark' n=10 0.47 % ±1.59% ±2.11% ±2.75% fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='benchmark' n=100 * 0.68 % ±0.63% ±0.84% ±1.10% fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='lib' n=1 -0.40 % ±1.61% ±2.15% ±2.82% fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='lib' n=10 0.23 % ±1.31% ±1.74% ±2.27% fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='lib' n=100 1.67 % ±1.67% ±2.24% ±2.96% fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='test/parallel' n=1 0.77 % ±0.83% ±1.11% ±1.46% fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='test/parallel' n=10 *** 3.75 % ±1.90% ±2.55% ±3.37% fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='test/parallel' n=100 * 1.51 % ±1.16% ±1.54% ±2.01% fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='benchmark' n=1 0.13 % ±1.53% ±2.04% ±2.67% fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='benchmark' n=10 1.42 % ±1.64% ±2.20% ±2.91% fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='benchmark' n=100 0.27 % ±0.53% ±0.71% ±0.93% fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='lib' n=1 *** 1.39 % ±0.75% ±1.00% ±1.31% fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='lib' n=10 -3.22 % ±5.11% ±6.88% ±9.13% fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='lib' n=100 0.05 % ±0.78% ±1.04% ±1.35% fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='test/parallel' n=1 1.09 % ±1.37% ±1.82% ±2.38% fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='test/parallel' n=10 *** 5.67 % ±1.26% ±1.69% ±2.23% fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='test/parallel' n=100 1.22 % ±1.55% ±2.07% ±2.72% fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='benchmark' n=1 0.39 % ±3.01% ±4.03% ±5.27% fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='benchmark' n=10 0.72 % ±1.31% ±1.74% ±2.27% fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='benchmark' n=100 0.35 % ±1.11% ±1.49% ±1.97% fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='lib' n=1 1.28 % ±1.48% ±1.99% ±2.62% fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='lib' n=10 0.33 % ±1.02% ±1.35% ±1.76% fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='lib' n=100 0.03 % ±0.71% ±0.94% ±1.22% fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='test/parallel' n=1 * 1.49 % ±1.44% ±1.92% ±2.51% fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='test/parallel' n=10 *** 7.41 % ±2.81% ±3.79% ±5.03% fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='test/parallel' n=100 *** 1.56 % ±0.75% ±1.00% ±1.31% fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='benchmark' n=1 -0.43 % ±1.26% ±1.68% ±2.19% fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='benchmark' n=10 -0.12 % ±1.12% ±1.49% ±1.94% fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='benchmark' n=100 -0.10 % ±0.91% ±1.21% ±1.58% fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='lib' n=1 2.79 % ±4.15% ±5.59% ±7.39% fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='lib' n=10 0.12 % ±2.12% ±2.83% ±3.70% fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='lib' n=100 0.07 % ±3.03% ±4.04% ±5.26% fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='test/parallel' n=1 0.41 % ±1.25% ±1.66% ±2.17% fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='test/parallel' n=10 0.79 % ±2.11% ±2.81% ±3.66% fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='test/parallel' n=100 0.08 % ±0.92% ±1.22% ±1.59% fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='benchmark' n=1 -1.47 % ±4.43% ±5.96% ±7.90% fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='benchmark' n=10 0.49 % ±0.51% ±0.68% ±0.89% fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='benchmark' n=100 1.15 % ±1.23% ±1.66% ±2.19% fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='lib' n=1 0.57 % ±0.91% ±1.21% ±1.58% fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='lib' n=10 -1.87 % ±4.44% ±5.97% ±7.90% fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='lib' n=100 2.01 % ±3.92% ±5.29% ±7.01% fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='test/parallel' n=1 -0.10 % ±0.88% ±1.18% ±1.54% fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='test/parallel' n=10 -0.12 % ±0.83% ±1.11% ±1.45% fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='test/parallel' n=100 -0.17 % ±0.79% ±1.06% ±1.38% fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='benchmark' n=1 * 1.12 % ±1.08% ±1.44% ±1.88% fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='benchmark' n=10 1.85 % ±2.73% ±3.65% ±4.80% fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='benchmark' n=100 0.16 % ±1.07% ±1.42% ±1.85% fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='lib' n=1 0.54 % ±1.06% ±1.42% ±1.84% fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='lib' n=10 -0.62 % ±1.21% ±1.62% ±2.14% fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='lib' n=100 0.66 % ±1.14% ±1.52% ±2.00% fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='test/parallel' n=1 -2.67 % ±5.08% ±6.85% ±9.09% fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='test/parallel' n=10 -0.12 % ±0.73% ±0.97% ±1.26% fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='test/parallel' n=100 0.55 % ±0.60% ±0.80% ±1.05% fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='benchmark' n=1 0.22 % ±1.42% ±1.90% ±2.49% fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='benchmark' n=10 0.08 % ±2.60% ±3.50% ±4.64% fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='benchmark' n=100 0.08 % ±0.78% ±1.03% ±1.35% fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='lib' n=1 -0.03 % ±1.26% ±1.68% ±2.20% fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='lib' n=10 0.38 % ±2.30% ±3.07% ±4.03% fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='lib' n=100 2.81 % ±3.46% ±4.65% ±6.16% fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='test/parallel' n=1 *** 1.77 % ±0.50% ±0.66% ±0.86% fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='test/parallel' n=10 *** 4.75 % ±1.45% ±1.93% ±2.52% fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='test/parallel' n=100 0.26 % ±1.28% ±1.72% ±2.27% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='benchmark' n=1 0.45 % ±1.22% ±1.63% ±2.13% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='benchmark' n=10 0.31 % ±0.81% ±1.09% ±1.42% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='benchmark' n=100 -0.18 % ±0.84% ±1.13% ±1.47% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='lib' n=1 0.21 % ±1.48% ±1.97% ±2.56% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='lib' n=10 -0.23 % ±0.57% ±0.76% ±1.00% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='lib' n=100 0.05 % ±1.43% ±1.92% ±2.52% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='test/parallel' n=1 ** 2.56 % ±1.63% ±2.18% ±2.88% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='test/parallel' n=10 *** 4.31 % ±1.28% ±1.71% ±2.23% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='test/parallel' n=100 * 1.00 % ±0.76% ±1.02% ±1.34% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='benchmark' n=1 2.96 % ±4.42% ±5.95% ±7.89% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='benchmark' n=10 0.75 % ±1.01% ±1.35% ±1.78% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='benchmark' n=100 0.04 % ±0.75% ±1.00% ±1.32% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='lib' n=1 1.02 % ±1.31% ±1.74% ±2.27% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='lib' n=10 -0.29 % ±1.13% ±1.52% ±1.99% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='lib' n=100 0.26 % ±0.70% ±0.93% ±1.21% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='test/parallel' n=1 *** 2.64 % ±1.26% ±1.69% ±2.23% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='test/parallel' n=10 *** 5.59 % ±1.19% ±1.59% ±2.10% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='test/parallel' n=100 ** 1.59 % ±1.12% ±1.49% ±1.96% fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='benchmark' n=1 1.62 % ±2.70% ±3.61% ±4.72% fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='benchmark' n=10 -0.09 % ±1.25% ±1.67% ±2.20% fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='benchmark' n=100 0.03 % ±0.60% ±0.80% ±1.04% fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='lib' n=1 0.87 % ±1.34% ±1.78% ±2.32% fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='lib' n=10 0.81 % ±1.74% ±2.32% ±3.03% fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='lib' n=100 0.71 % ±1.92% ±2.56% ±3.35% fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='test/parallel' n=1 -0.14 % ±0.75% ±1.01% ±1.33% fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='test/parallel' n=10 0.16 % ±0.61% ±0.81% ±1.06% fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='test/parallel' n=100 0.09 % ±1.20% ±1.60% ±2.08% fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='benchmark' n=1 0.35 % ±1.17% ±1.57% ±2.06% fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='benchmark' n=10 0.77 % ±0.79% ±1.05% ±1.38% fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='benchmark' n=100 1.09 % ±1.19% ±1.60% ±2.12% fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='lib' n=1 0.57 % ±1.04% ±1.38% ±1.80% fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='lib' n=10 -0.57 % ±2.63% ±3.52% ±4.65% fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='lib' n=100 2.33 % ±3.84% ±5.17% ±6.86% fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='test/parallel' n=1 -0.26 % ±0.60% ±0.80% ±1.04% fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='test/parallel' n=10 0.28 % ±0.66% ±0.88% ±1.15% fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='test/parallel' n=100 0.05 % ±0.93% ±1.24% ±1.61% fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='benchmark' n=1 * 1.61 % ±1.44% ±1.94% ±2.55% fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='benchmark' n=10 0.77 % ±3.60% ±4.82% ±6.33% fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='benchmark' n=100 1.17 % ±1.52% ±2.05% ±2.71% fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='lib' n=1 0.88 % ±0.93% ±1.23% ±1.60% fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='lib' n=10 -0.21 % ±0.92% ±1.22% ±1.59% fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='lib' n=100 0.86 % ±1.28% ±1.72% ±2.27% fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='test/parallel' n=1 0.28 % ±0.50% ±0.66% ±0.87% fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='test/parallel' n=10 1.55 % ±2.77% ±3.71% ±4.90% fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='test/parallel' n=100 * 0.86 % ±0.86% ±1.15% ±1.52% Be aware that when doing many comparisons the risk of a false-positive result increases. In this case, there are 108 comparisons, you can thus expect the following amount of false-positive results: 5.40 false positives, when considering a 5% risk acceptance (*, **, ***), 1.08 false positives, when considering a 1% risk acceptance (**, ***), 0.11 false positives, when considering a 0.1% risk acceptance (***)

Performance is significantly improved when asynchronous compared to synchronous.

@RedYetiDev
Please confirm when you have time. Many Thanks!

I don't think that benchmark is accurate. See my review comments.

@RedYetiDev
Many Thanks, we were able to improve the benchmark code.
Here are the results of the improved benchmark!

The results of recursive=true useAsync=true are:

confidence improvement accuracy (*) (**) (***) fs/bench-glob.js recursive='true' useAsync='true' pattern='*.js' dir='benchmark' n=1000 1.03 % ±2.95% ±3.95% ±5.21% fs/bench-glob.js recursive='true' useAsync='true' pattern='*.js' dir='lib' n=1000 1.14 % ±1.67% ±2.23% ±2.90% fs/bench-glob.js recursive='true' useAsync='true' pattern='*.js' dir='test/parallel' n=1000 * 1.53 % ±1.32% ±1.75% ±2.28% fs/bench-glob.js recursive='true' useAsync='true' pattern='**/*' dir='benchmark' n=1000 0.70 % ±1.27% ±1.70% ±2.23% fs/bench-glob.js recursive='true' useAsync='true' pattern='**/*' dir='lib' n=1000 0.97 % ±2.06% ±2.75% ±3.58% fs/bench-glob.js recursive='true' useAsync='true' pattern='**/*' dir='test/parallel' n=1000 0.73 % ±1.55% ±2.07% ±2.69% fs/bench-glob.js recursive='true' useAsync='true' pattern='**/**.js' dir='benchmark' n=1000 -0.88 % ±1.31% ±1.74% ±2.27% fs/bench-glob.js recursive='true' useAsync='true' pattern='**/**.js' dir='lib' n=1000 1.23 % ±2.51% ±3.35% ±4.36% fs/bench-glob.js recursive='true' useAsync='true' pattern='**/**.js' dir='test/parallel' n=1000 0.66 % ±1.42% ±1.89% ±2.47% Be aware that when doing many comparisons the risk of a false-positive result increases. In this case, there are 9 comparisons, you can thus expect the following amount of false-positive results: 0.45 false positives, when considering a 5% risk acceptance (*, **, ***), 0.09 false positives, when considering a 1% risk acceptance (**, ***), 0.01 false positives, when considering a 0.1% risk acceptance (***)

The results of recursive=true useAsync=false are:

confidence improvement accuracy (*) (**) (***) fs/bench-glob.js recursive='true' useAsync='false' pattern='*.js' dir='benchmark' n=1000 0.33 % ±2.25% ±3.00% ±3.92% fs/bench-glob.js recursive='true' useAsync='false' pattern='*.js' dir='lib' n=1000 2.97 % ±4.11% ±5.52% ±7.27% fs/bench-glob.js recursive='true' useAsync='false' pattern='*.js' dir='test/parallel' n=1000 1.08 % ±1.16% ±1.54% ±2.01% fs/bench-glob.js recursive='true' useAsync='false' pattern='**/*' dir='benchmark' n=1000 0.59 % ±1.82% ±2.43% ±3.16% fs/bench-glob.js recursive='true' useAsync='false' pattern='**/*' dir='lib' n=1000 0.40 % ±1.85% ±2.47% ±3.22% fs/bench-glob.js recursive='true' useAsync='false' pattern='**/*' dir='test/parallel' n=1000 1.25 % ±1.52% ±2.02% ±2.63% fs/bench-glob.js recursive='true' useAsync='false' pattern='**/**.js' dir='benchmark' n=1000 0.33 % ±1.56% ±2.08% ±2.71% fs/bench-glob.js recursive='true' useAsync='false' pattern='**/**.js' dir='lib' n=1000 0.42 % ±1.68% ±2.24% ±2.91% fs/bench-glob.js recursive='true' useAsync='false' pattern='**/**.js' dir='test/parallel' n=1000 1.03 % ±1.15% ±1.53% ±1.99% Be aware that when doing many comparisons the risk of a false-positive result increases. In this case, there are 9 comparisons, you can thus expect the following amount of false-positive results: 0.45 false positives, when considering a 5% risk acceptance (*, **, ***), 0.09 false positives, when considering a 1% risk acceptance (**, ***), 0.01 false positives, when considering a 0.1% risk acceptance (***)

Nice! Looks like a bit of improvement

PR: nodejs#54644 (comment)

RedYetiDev · 2024-09-12T10:40:27Z

@nodejs/fs @nodejs/benchmarking

RedYetiDev · 2024-09-12T13:22:28Z

benchmark/fs/bench-glob.js

+  dir: ['lib', 'test/parallel', 'benchmark'],
+  pattern: ['**/*', '*.js', '**/**.js'],
+  mode: ['async', 'sync'],
+  recursive: ['true', 'false'],


Suggested change

recursive: ['true', 'false'],

recursive: [true, false],

I didn't seem to use boolean in benchmark (error on CI), so I fixed that in this commit!

Many Thanks!

benchmark/fs/bench-glob.js

RedYetiDev · 2024-09-12T13:23:36Z

benchmark/fs/bench-glob.js

+const benchmarkDirectory = path.resolve(__dirname, '..', '..');
+
+const configs = {
+  n: [1, 10, 100],


IMO n should be a single (higher) value. Something like 3e4 (but that might be too high)?

100 is way to low.

RedYetiDev · 2024-09-12T13:25:10Z

benchmark/fs/bench-glob.js

+
+  bench.start();
+
+  let counter = 0;


Suggested change

let counter = 0;

No need to count the output

RedYetiDev · 2024-09-12T13:25:17Z

benchmark/fs/bench-glob.js

+    }
+  }
+
+  bench.end(counter);


Suggested change

bench.end(counter);

bench.end(config.n);

RedYetiDev · 2024-09-12T13:25:35Z

lib/fs.js

-      for await (const entry of new Glob(pattern, options).glob()) {
-        ArrayPrototypePush(res, entry);
-      }
+      const res = await ArrayFromAsync(new Glob(pattern, options).glob());


I don't think that benchmark is accurate. See my review comments.

RedYetiDev · 2024-09-12T15:52:24Z

benchmark/fs/bench-glob.js

+  const fullPath = path.resolve(benchmarkDirectory, config.dir);
+  const { pattern, recursive, useAsync } = config;
+
+  bench.start();


Suggested change

bench.start();

let noDead;

bench.start();

RedYetiDev · 2024-09-12T15:52:34Z

benchmark/fs/bench-glob.js

+
+  for (let i = 0; i < config.n; i++) {
+    if (useAsync) {
+      await new Promise((resolve, reject) => {


Suggested change

await new Promise((resolve, reject) => {

noDead = await new Promise((resolve, reject) => {

RedYetiDev · 2024-09-12T15:52:47Z

benchmark/fs/bench-glob.js

+        });
+      });
+    } else {
+      fs.globSync(pattern, { cwd: fullPath, recursive });


Suggested change

fs.globSync(pattern, { cwd: fullPath, recursive });

noDead = fs.globSync(pattern, { cwd: fullPath, recursive });

RedYetiDev · 2024-09-12T15:53:02Z

benchmark/fs/bench-glob.js

+    }
+  }
+
+  bench.end(config.n);


Suggested change

bench.end(config.n);

bench.end(config.n);

assert.ok(noDead);

benchmark/fs/bench-glob.js

sonsurim · 2024-09-12T15:58:37Z

@RedYetiDev
It was my first benchmarking, so I was clumsy. Thank you so much for the review!

modify config property because boolean cannot be used

RedYetiDev · 2024-09-13T23:55:39Z

benchmark/fs/bench-glob.js

+  bench.start();
+
+  for (let i = 0; i < config.n; i++) {
+    if (mode === 'async') {


Does this statement affect benchmarking speeds?

@RedYetiDev
Thank you for the review!
I think wrapping a Promise with each iteration affects benchmarking, So I fixed it.
After benchmarking again, there seems to be a decrease in performance..🥲

So, I'm trying to close the current PR and upload a PR that only adds benchmarking code. Is that okay?

mode: async, recursive: true

confidence improvement accuracy (*) (**) (***) fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='benchmark' n=1000 -0.55 % ±1.61% ±2.14% ±2.79% fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='lib' n=1000 -0.16 % ±1.88% ±2.51% ±3.27% fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='test/parallel' n=1000 1.76 % ±3.88% ±5.19% ±6.83% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='benchmark' n=1000 ** -3.39 % ±2.20% ±2.93% ±3.83% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='lib' n=1000 -0.69 % ±2.17% ±2.89% ±3.77% fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='test/parallel' n=1000 -0.20 % ±1.24% ±1.65% ±2.14% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='benchmark' n=1000 -2.56 % ±2.61% ±3.49% ±4.57% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='lib' n=1000 -0.49 % ±2.24% ±2.98% ±3.87% fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='test/parallel' n=1000 -1.24 % ±1.48% ±1.97% ±2.56% Be aware that when doing many comparisons the risk of a false-positive result increases. In this case, there are 9 comparisons, you can thus expect the following amount of false-positive results: 0.45 false positives, when considering a 5% risk acceptance (*, **, ***), 0.09 false positives, when considering a 1% risk acceptance (**, ***), 0.01 false positives, when considering a 0.1% risk acceptance (***)

@RedYetiDev, Sorry for the frequent comments.
I look forward to hearing from you.
Many thanks!

nodejs-github-bot · 2024-09-21T05:23:16Z

CI: https://ci.nodejs.org/job/node-test-pull-request/62617/

daeyeon · 2024-09-21T10:36:22Z

Benchmark CI: https://ci.nodejs.org/view/Node.js%20benchmark/job/benchmark-node-micro-benchmarks/1642/

16:22:11                                                                                               confidence improvement accuracy (*)   (**)  (***)
16:22:11 fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='benchmark' n=1000                         1.68 %       ±3.31% ±4.41% ±5.74%
16:22:11 fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='lib' n=1000                               0.30 %       ±3.80% ±5.06% ±6.58%
16:22:11 fs/bench-glob.js recursive='false' mode='async' pattern='*.js' dir='test/parallel' n=1000                     0.37 %       ±2.93% ±3.90% ±5.07%
16:22:11 fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='benchmark' n=1000                        -0.82 %       ±3.44% ±4.58% ±5.97%
16:22:11 fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='lib' n=1000                               1.91 %       ±3.57% ±4.76% ±6.20%
16:22:11 fs/bench-glob.js recursive='false' mode='async' pattern='**/*' dir='test/parallel' n=1000                     2.36 %       ±3.06% ±4.07% ±5.29%
16:22:11 fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='benchmark' n=1000                     1.26 %       ±3.21% ±4.28% ±5.58%
16:22:11 fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='lib' n=1000                          -0.32 %       ±2.79% ±3.71% ±4.83%
16:22:11 fs/bench-glob.js recursive='false' mode='async' pattern='**/**.js' dir='test/parallel' n=1000                 0.01 %       ±3.08% ±4.09% ±5.33%
16:22:11 fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='benchmark' n=1000                         -0.19 %       ±0.58% ±0.77% ±1.01%
16:22:11 fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='lib' n=1000                               -0.25 %       ±0.63% ±0.83% ±1.09%
16:22:11 fs/bench-glob.js recursive='false' mode='sync' pattern='*.js' dir='test/parallel' n=1000                      0.01 %       ±0.25% ±0.33% ±0.43%
16:22:11 fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='benchmark' n=1000                         -0.06 %       ±0.22% ±0.30% ±0.39%
16:22:11 fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='lib' n=1000                                0.10 %       ±0.26% ±0.34% ±0.45%
16:22:11 fs/bench-glob.js recursive='false' mode='sync' pattern='**/*' dir='test/parallel' n=1000                     -0.10 %       ±0.14% ±0.18% ±0.24%
16:22:11 fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='benchmark' n=1000                     -0.06 %       ±0.36% ±0.47% ±0.62%
16:22:11 fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='lib' n=1000                            0.08 %       ±0.27% ±0.36% ±0.47%
16:22:11 fs/bench-glob.js recursive='false' mode='sync' pattern='**/**.js' dir='test/parallel' n=1000                  0.07 %       ±0.25% ±0.33% ±0.43%
16:22:11 fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='benchmark' n=1000                         -1.57 %       ±4.24% ±5.65% ±7.36%
16:22:11 fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='lib' n=1000                                1.11 %       ±4.70% ±6.26% ±8.16%
16:22:11 fs/bench-glob.js recursive='true' mode='async' pattern='*.js' dir='test/parallel' n=1000                      1.93 %       ±4.49% ±5.98% ±7.78%
16:22:11 fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='benchmark' n=1000                          3.49 %       ±4.63% ±6.17% ±8.03%
16:22:11 fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='lib' n=1000                                0.54 %       ±3.81% ±5.08% ±6.62%
16:22:11 fs/bench-glob.js recursive='true' mode='async' pattern='**/*' dir='test/parallel' n=1000                     -1.94 %       ±4.00% ±5.32% ±6.93%
16:22:11 fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='benchmark' n=1000                     -1.03 %       ±3.26% ±4.35% ±5.67%
16:22:11 fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='lib' n=1000                            0.21 %       ±3.82% ±5.08% ±6.62%
16:22:11 fs/bench-glob.js recursive='true' mode='async' pattern='**/**.js' dir='test/parallel' n=1000                  1.81 %       ±4.73% ±6.29% ±8.19%
16:22:11 fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='benchmark' n=1000                           0.26 %       ±0.65% ±0.87% ±1.13%
16:22:11 fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='lib' n=1000                                 0.52 %       ±0.80% ±1.07% ±1.39%
16:22:11 fs/bench-glob.js recursive='true' mode='sync' pattern='*.js' dir='test/parallel' n=1000                      -0.04 %       ±0.27% ±0.36% ±0.47%
16:22:11 fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='benchmark' n=1000                           0.12 %       ±0.22% ±0.29% ±0.38%
16:22:11 fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='lib' n=1000                                 0.12 %       ±0.20% ±0.27% ±0.36%
16:22:11 fs/bench-glob.js recursive='true' mode='sync' pattern='**/*' dir='test/parallel' n=1000                       0.21 %       ±0.25% ±0.33% ±0.43%
16:22:11 fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='benchmark' n=1000                *      0.19 %       ±0.17% ±0.23% ±0.30%
16:22:11 fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='lib' n=1000                            -0.02 %       ±0.22% ±0.29% ±0.37%
16:22:11 fs/bench-glob.js recursive='true' mode='sync' pattern='**/**.js' dir='test/parallel' n=1000                   0.11 %       ±0.26% ±0.34% ±0.45%

daeyeon · 2024-09-21T10:53:29Z

benchmark/fs/bench-glob.js

+  dir: ['lib', 'test/parallel', 'benchmark'],
+  pattern: ['**/*', '*.js', '**/**.js'],


nit: There seem to be too many cases. Suggest reducing a few options if possible. Please consider if it's possible to obtain sufficient results with fewer iterations and cases.

Thank you so much for the review!
If it's the review you mentioned, can I ask if it would be a good idea to try reducing the number of dir and pattern types?

I thought about it this way:

dir: ['lib'], pattern: ['**/*', '*.js', '**/**.js'],

Yes, I think the configs would be enough.

Thank you! There were definitely a variety of cases..! I fixed from defe492!

nodejs-github-bot · 2024-09-24T23:35:41Z

CI: https://ci.nodejs.org/job/node-test-pull-request/62755/

nodejs-github-bot · 2024-09-25T03:36:23Z

CI: https://ci.nodejs.org/job/node-test-pull-request/62756/

aduh95 · 2024-09-27T09:59:12Z

Landed in 090add7

Refs: nodejs#51912 PR-URL: nodejs#54644 Reviewed-By: Daeyeon Jeong <daeyeon.dev@gmail.com>

nodejs-github-bot added fs Issues and PRs related to the fs subsystem / file system. needs-ci PRs that need a full CI run. labels Aug 29, 2024

fs: refactoring declaratively with the fromAsync function

07d075a

- Refs: nodejs#51912

sonsurim force-pushed the refactor-glob branch from 4dd3a9e to 07d075a Compare August 29, 2024 19:03

sonsurim added 2 commits August 30, 2024 04:15

fs: replace global Array to primordials ArrayFromAsync

e2d8a69

fix lint error

dde434c

RedYetiDev reviewed Aug 29, 2024

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sonsurim added 2 commits September 9, 2024 17:16

benchmark: add fs glob benchmark

f4025e5

PR: nodejs#54644 (comment)

lint js

1a9ae15

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refactor glob benchmark

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reflected review in glob benchmark

43ef1e4

remove an unused variable

cb2591a

RedYetiDev reviewed Sep 12, 2024

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applied review on glob benchmark

1ff400e

fix error where benchmarking type does not match in CI

c976446

modify config property because boolean cannot be used

sonsurim force-pushed the refactor-glob branch from ed1d2a8 to c976446 Compare September 13, 2024 22:06

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remove parts that affect benchmarking

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fix too many cases for benchmarking

defe492

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aduh95 merged commit 090add7 into nodejs:main Sep 27, 2024
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2024-10-16, Version 23.0.0 (Current) #55338

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fs: refactoring declaratively with Array.fromAsync

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Refs: nodejs#51912 PR-URL: nodejs#54644 Reviewed-By: Daeyeon Jeong <daeyeon.dev@gmail.com>

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fs: refactoring declaratively with the Array.fromAsync function #54644

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	await new Promise((resolve, reject) => {
	noDead = await new Promise((resolve, reject) => {

	fs.globSync(pattern, { cwd: fullPath, recursive });
	noDead = fs.globSync(pattern, { cwd: fullPath, recursive });

		dir: ['lib', 'test/parallel', 'benchmark'],
		pattern: ['*/', '.js', '/*.js'],

fs: refactoring declaratively with the Array.fromAsync function #54644

fs: refactoring declaratively with the Array.fromAsync function #54644

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