how to delete first key in hashmap in javascript 1

how to delete first key in hashmap in javascript

this.cache.delete(this.cache.keys().next().value)

Here is what the above code is Doing:
1. We’re using the cache.keys() method to get an iterator of all the keys in the cache.
2. We’re using the iterator’s next() method to get the first key in the cache.
3. We’re using the cache.delete() method to delete the first key in the cache.

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