Frequency Counter Challenge - sameFrequency

sameFrequency.js

// Frequency Counter - sameFrequency

// Write a function called sameFrequency. Given two positive intergers,
// find out if the two numbers have the same frequency of digits.

// Solution Requirements
//      - Time Complexity: O(n)

function sameFrequency(int1, int2) {
    const int1Arr = Array.from(int1.toString()).map(Number);
    const int2Arr = Array.from(int2.toString()).map(Number);

    if(int1Arr.length !== int2Arr.length) return false

    let refObject = {}
    
    for(var int1Val of int1Arr) {
        refObject[int1Val] = refObject[int1Val] ? refObject[int1Val] += 1 : refObject[int1Val] = 1
    }
    for(var int2Val of int2Arr) {
        if (!refObject[int2Val]) return false
        refObject[int2Val] =- 1
    }  
    return true;
}

//  console.log(sameFrequency(182, 281)) // true
//  console.log(sameFrequency(34, 14)) // false
//  console.log(sameFrequency(3589578, 5879385)) // true
//  console.log(sameFrequency(22, 222)) // true