Here’s an example of how you can get the last value in a Map object:

const myMap = new Map();

myMap.set('key1', 'value1');
myMap.set('key2', 'value2');
myMap.set('key3', 'value3');

const values = Array.from(myMap.values());
const lastValue = values[values.length - 1];

console.log(lastValue); // Output: value3

In the above example, we create a Map object myMap and add three key-value pairs to it. We convert the myMap.values() iterator into an array using Array.from() and store it in the values variable. Finally, we retrieve the last value from the values array using values.length - 1 index and assign it to the lastValue variable.

Remember to adapt the code to your specific use case.