let MAX_INT = Number.MAX_SAFE_INTEGER;
let MIN_INT = Number.MIN_SAFE_INTEGER;
let MAX_VAL = Number.MAX_VALUE;
let MIN_VAL = Number.MIN_VALUE;
console.log(Number.isSafeInteger(MAX_INT));
console.log(Number.isSafeInteger(MIN_INT));
console.log(Number.isSafeInteger(MAX_VAL));
console.log(Number.isSafeInteger(MIN_VAL));
console.log(Number.isFinite(MAX_VAL));