Run results for: Inline function vs separately declared function

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36

Browser: Chrome 95

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Inline	7477298.5 Ops/sec
Outside	6679709.0 Ops/sec

Script Preparation code:

window.foo = ['cat', 'dog', 'bird'];

AخA
 
window.foo = ['cat', 'dog', 'bird'];

Tests:

foo.forEach((item) => {
  const j = 'test';
  
 const outside = (i) => {
  return i === j;
 }
  outside(item);
})

 
foo.forEach((item) => {  const j = 'test';   const outside = (i) => {  return i === j; }  outside(item);})

const outside = (i, j) => {
  return i === j;
}

foo.forEach((item) => {
  const j = 'test';
  outside(item);
})

​x
 
const outside = (i, j) => {  return i === j;}​foo.forEach((item) => {  const j = 'test';  outside(item);})