Run results for: JS Performance (const vs let vs var)

Test name	Executions per second
✓ CONST <> DELETE	2,789,804 Ops/sec
VAR <> DELETE	2,778,016 Ops/sec
LET <> DELETE	2,768,529 Ops/sec
LET <> ACCESS	34,613 Ops/sec
VAR <> ACCESS	34,233 Ops/sec
CONST <> ACCESS	33,172 Ops/sec
CONST <> UPDATE	854 Ops/sec
CONST <> CONSTRUCTION	852 Ops/sec
VAR <> UPDATE	852 Ops/sec
LET <> CONSTRUCTION	852 Ops/sec
VAR <> ASSIGNMENT	849 Ops/sec
LET <> UPDATE	847 Ops/sec

CONST <> CONSTRUCTION

for (let i = 0; i < maxRuns; i++) {
const x = i;
}

CONST <> UPDATE

const x = {v: 0}

for (let i = 0; i < maxRuns; i++) {
x.v = 1;
}

CONST <> DELETE

const x = {}

for (let i = 0; i < maxObjectSize; i++) {
x[`key_{i}`] = 1
}

for (let i = 0; i < maxObjectSize; i++) {
delete x[`key_{i}`]
}

CONST <> ACCESS

const x = {}

for (let i = 0; i < maxObjectSize; i++) {
x[`key_{i}`] = 1
}

for (let i = 0; i < maxObjectSize; i++) {
console.log(x[`key_{i}`]);
}

LET <> CONSTRUCTION

for (let i = 0; i < maxRuns; i++) {
let x = i;
}

LET <> UPDATE

let x = {v: 0}

for (let i = 0; i < maxRuns; i++) {
x.v = 1;
}

LET <> DELETE

let x = {}

for (let i = 0; i < maxObjectSize; i++) {
x[`key_{i}`] = 1
}

for (let i = 0; i < maxObjectSize; i++) {
delete x[`key_{i}`]
}

LET <> ACCESS

let x = {}

for (let i = 0; i < maxObjectSize; i++) {
x[`key_{i}`] = 1
}

for (let i = 0; i < maxObjectSize; i++) {
console.log(x[`key_{i}`]);
}

VAR <> ASSIGNMENT

for (let i = 0; i < maxRuns; i++) {
var x = i;
}

VAR <> UPDATE

var x = {v: 0}

for (let i = 0; i < maxRuns; i++) {
x.v = 1;
}

VAR <> ACCESS

var x = {}

for (let i = 0; i < maxObjectSize; i++) {
x[`key_{i}`] = 1
}

for (let i = 0; i < maxObjectSize; i++) {
console.log(x[`key_{i}`]);
}

VAR <> DELETE

var x = {}

for (let i = 0; i < maxObjectSize; i++) {
x[`key_{i}`] = 1
}

for (let i = 0; i < maxObjectSize; i++) {
delete x[`key_{i}`]
}