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map over Object (or Record in TS) vs Map clone
(version: 1)
Comparing performance of:
Obj / Object.entries() vs Map / spread vs Map / Array.from()
Created:
one year ago
by:
Guest
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Tests:
Obj / Object.entries()
let obj = {}; for (let i = 0; i < 1000000; i++) { obj[i] = i; } let tuples = Object.entries(obj).map(([k, v]) => [k, v]);
Map / spread
let map = new Map(); for (let i = 0; i < 1000000; i++) { map.set(i, i); } let tuples = [...map].map(([k, v]) => [k, v]);
Map / Array.from()
let map = new Map(); for (let i = 0; i < 1000000; i++) { map.set(i, i); } let tuples = Array.from(map).map(([k, v]) => [k, v]);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Obj / Object.entries()
Map / spread
Map / Array.from()
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Browser/OS:
Chrome 130 on Mac OS X 10.15.7
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Test name
Executions per second
Obj / Object.entries()
6.2 Ops/sec
Map / spread
7.5 Ops/sec
Map / Array.from()
7.7 Ops/sec
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Object spread vs New map entries
Iterating map v2
map over Object (or Record in TS) vs Map
creating maps vs creating objects
allocating objects vs allocating maps
map vs object test here
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