Benchmark: Object.fromEntries vs reduce vs Map - fixed

Script Preparation code:

var data = { ...Array.from(Array(10000).keys()) };

Tests:

Object.fromEntries
Object.fromEntries(Object.entries(data).map(([key, value]) => [key, value]));
Reduce (reuse object)
Object.entries(data).reduce((acc, [k, v]) => { acc[k] = v; return acc; }, {});
Reduce (recreating object)
Object.entries(data).reduce((acc, [k, v]) => ({ ...acc, [k]: v }), {});
Map
Object.entries(data).reduce((acc, [k, v]) => { acc.set(k, v) return acc; }, new Map());
Reduce (assigning into reused object)
Object.entries(data).reduce((acc, [k, v]) => Object.assign(acc, { [k]: v }), {});

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object.fromEntries
Reduce (reuse object)
Reduce (recreating object)
Map
Reduce (assigning into reused object)

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36 Edg/142.0.0.0

Browser/OS: Chrome 142 on Windows

View result in a separate tab

Reduce (reuse object)

3K/s

Object.fromEntries

1K/s

Map

1K/s

Reduce (assigning into reused object)

269/s

Reduce (recreating object)

45/s

View exact numbers

Test name	Executions per second
✓ Reduce (reuse object)	2,653 Ops/sec
Object.fromEntries	1,312 Ops/sec
Map	1,212 Ops/sec
Reduce (assigning into reused object)	269 Ops/sec
Reduce (recreating object)	45 Ops/sec

Object.fromEntries vs reduce vs Map - fixed (version: 1)

Comparing performance of: `Object.fromEntries vs Reduce (reuse object) vs Reduce (recreating object) vs Map vs Reduce (assigning into reused object)`

Created: one year ago by: Guest

Go to the latest result

Object.fromEntries

Reduce (reuse object)

Reduce (recreating object)

Map

Reduce (assigning into reused object)

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Object.fromEntries vs reduce vs Map - fixed (version: 1)

Comparing performance of: Object.fromEntries vs Reduce (reuse object) vs Reduce (recreating object) vs Map vs Reduce (assigning into reused object)

Created: one year ago by: Guest

Go to the latest result

Object.fromEntries

Reduce (reuse object)

Reduce (recreating object)

Map

Reduce (assigning into reused object)

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Object.fromEntries vs Reduce (reuse object) vs Reduce (recreating object) vs Map vs Reduce (assigning into reused object)`