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Is there any advantage to use Map.has() for checking if key exists in Map instead of using Map.get()? (Other than code readability reasons)

I checked ES2015 language specifications and both methods seems the same except the return value so I believe the performance is the same but maybe there are some other aspects I don't know of that could affect performance here.

Map.prototype.has ( key )

The following steps are taken:

Let M be the this value. If Type(M) is not Object, throw a TypeError exception. If M does not have a [[MapData]] internal slot, throw a TypeError exception. Let entries be the List that is the value of M’s [[MapData]] internal slot. Repeat for each Record {[[key]], [[value]]} p that is an element of entries, If p.[[key]] is not empty and SameValueZero(p.[[key]], key) is true, return true. Return false.

Map.prototype.has method specification

Map.prototype.get ( key )

The following steps are taken:

Let M be the this value. If Type(M) is not Object, throw a TypeError exception. If M does not have a [[MapData]] internal slot, throw a TypeError exception. Let entries be the List that is the value of M’s [[MapData]] internal slot. Repeat for each Record {[[key]], [[value]]} p that is an element of entries, If p.[[key]] is not empty and SameValueZero(p.[[key]], key) is true, return p.[[value]]. Return undefined.

Map.prototype.get method specification