Run results for: JS Array ref duplication (2)

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36

Browser: Chrome 67

Operating system: Windows 7

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Ref access	9113778.0 Ops/sec
Filter access	15603.5 Ops/sec

Script Preparation code:

var baseArray = {}
var refArray = {}

for (let i = 0; i < 5000; i++) {
  baseArray[i] = {
  	x: i,
    y: i%121,
    val: 'test'
  }
}

for (const obj of Object.values(baseArray)) {
  if (refArray[obj.x] === undefined)
    refArray[obj.x] = {}
    
  refArray[obj.x][obj.y] = obj
}

Tests:

Ref access
let x = refArray[4500][120]
Filter access
let x = Object.values(baseArray).filter(e => e.x === 4500 && e.y === 120)

Run results for: JS Array ref duplication (2)

Ref access

Filter access