Map.prototype.delete()

const map = new Map();
map.set("bar", "foo");
console.log(map.delete("bar"));
// Expected result: true
// True indicates successful removal
console.log(map.has("bar"));
// Expected result: false

mapInstance.delete(key)

const myMap = new Map();
myMap.set("bar", "foo");
console.log(myMap.delete("bar")); // Returns true. Successfully removed.
console.log(myMap.has("bar")); // Returns false. The "bar" element is no longer present.