The Nullish Coalescing Operator (??) returns the right operand if the left one is null or undefined, otherwise, it returns the left operand. It’s useful for setting default values without considering falsy values like 0 or '' as absent.
console.log(null ?? 'hello'); // hello
console.log(undefined ?? 'hello'); // hello
console.log('' ?? 'hello'); // ''
console.log(0 ?? 'hello'); // 0