const x0 = (f) => {}

const x1 = (f) => { f(); }

const x2 = (f) => { x1(); f(); }

const x3 = (f) => { x2(); f(); }

const x4 = (f) => { x3(); f(); }

const x4 = (f) => { x3(); f(); }

const x5 = (f) => { x4(); f(); }

const x6 = (f) => { x5(); f(); }

const x7 = (f) => { x6(); f(); }


x3(console.log('hello world'));



이 코드를 아래처럼 바꾸면 빨라짐


const x0 = (f) => {}


const x1 = (f) => { f(); }


const x2 = (f) => { f(); f(); }


const x3 = (f) => { f(); f(); f(); }


const x4 = (f) => { f(); f(); f(); f(); }


const x5 = (f) => { f(); f(); f(); f(); f(); }


const x6 = (f) => { f(); f(); f(); f(); f(); f(); }


const x7 = (f) => { f(); f(); f(); f(); f(); f(); f(); }



x3(console.log('hello world'));