getkey by value js

function getKeyByValue(object, value) {
  return Object.keys(object).find(key => object[key] === value);
}


const map = {"first" : "1", "second" : "2"};
console.log(getKeyByValue(map,"2"));

4
9

                                    function getKeyByValue(object, value) {
  return Object.keys(object).find(key => object[key] === value);
}

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