Run results for: Set vs Filter for unique vs for string and numbers

Test name	Executions per second
✓ Create set small	1,206,543 Ops/sec
Create set small string	1,126,206 Ops/sec
Spread set small	1,053,135 Ops/sec
Array set small	1,030,173 Ops/sec
Spread set small string	972,280 Ops/sec
Array set small string	943,196 Ops/sec
Filter string small	377,250 Ops/sec
Filter number small	343,075 Ops/sec
Set spread num	259,924 Ops/sec
Create Set	255,194 Ops/sec
Array set string	243,403 Ops/sec
Array from set	228,282 Ops/sec
For small	151,093 Ops/sec
Set array	122,017 Ops/sec
Create set string	119,889 Ops/sec
For string small	119,390 Ops/sec
Filter	34,276 Ops/sec
For	21,588 Ops/sec
For string	10,344 Ops/sec
Filter string	6,350 Ops/sec

Script Preparation code:

var array = Array.from({length: 410}, () => Math.floor(Math.random() * 140));

var arrayA = Array.from({length: 410}, () => Math.random().toString(36).substring(2, 15));

var arrayS = Array.from({length: 40}, () => Math.floor(Math.random() * 140));

var arraySA = Array.from({length: 40}, () => Math.random().toString(36).substring(2, 15));

Tests:

Set spread num
const f = [... new Set(array)]
Array set small
const la = Array.from(new Set(arrayS))
Array set small string
const la = Array.from(new Set(arraySA))
For small
const sa ={} const lca = [] for(let i =0; i < arrayS.length; i++){ if (sa[arrayS[i]]) { continue } sa[arrayS[i]] = 1 lca.push(sa[arrayS[i]]) }
For string small
const sa ={} const lca = [] for(let i =0; i < arraySA.length; i++){ if (sa[arraySA[i]]) { continue } sa[arraySA[i]] = 1 lca.push(sa[arraySA[i]]) }
Create set small
const scsdf = new Set(arrayS)
Create set small string
const scsdfa = new Set(arraySA)
Filter number small
const baas = arrayS.filter((i,index) => arrayS.indexOf(i)=== index)
Filter string small
const baa = arraySA.filter((i,index) => arraySA.indexOf(i)=== index)
Filter string
const ba = arrayA.filter((i,index) => arrayA.indexOf(i)=== index)
Create set string
const sc = new Set(arrayA)
For string
const sa ={} const lca = [] for(let i =0; i < arrayA.length; i++){ if (sa[arrayA[i]]) { continue } sa[arrayA[i]] = 1 lca.push(sa[arrayA[i]]) }
Array set string
const la = Array.from(new Set(array))
Set array
const z = [... new Set(arrayA)]
For
const s ={} const lc = [] for(let i =0; i < array.length; i++){ if (s[array[i]]) { continue } s[array[i]] = 1 lc.push(s[array[i]]) }
Create Set
const ss = new Set(array)
Filter
const b = array.filter((i,index) => array.indexOf(i)=== index)
Array from set
const l = Array.from(new Set(array))
Spread set small
const z = [... new Set(arrayS)]
Spread set small string
const z = [... new Set(arraySA)]

Run results for: Set vs Filter for unique vs for string and numbers

Set spread num

Array set small

Array set small string

For small

For string small

Create set small

Create set small string

Filter number small

Filter string small

Filter string

Create set string

For string

Array set string

Set array

For

Create Set

Filter

Array from set

Spread set small

Spread set small string