Array.push return pushed value?

Question

Are there any substantial reasons why modifying Array.push() to return the object pushed rather than the length of the new array might be a bad idea?

I

Answer 1

Method push() returns the last element added, which makes it very inconvenient when creating short functions/reducers. Also, push() - is a rather archaic stuff in JS. On ahother hand we have spread operator [...] which is faster and does what you needs: it exactly returns an array.

// to concat arrays
const a = [1,2,3];
const b = [...a, 4, 5];
console.log(b) // [1, 2, 3, 4, 5];

// to concat and get a length
const arrA = [1,2,3,4,5];
const arrB = [6,7,8];
console.log([0, ...arrA, ...arrB, 9].length); // 10

// to reduce
const arr = ["red", "green", "blue"];
const liArr = arr.reduce( (acc,cur) => [...acc, `
${cur}
`],[]);
console.log(liArr);
  //[ "
red
", 
  //"
green
", 
  //"
blue
" ]