Lodash _.map method returns unexpected result when array provided instead of iteratee

Question

When I have this array for example:

const x = [1, 2, 3]

and I try this:

_(x).map(x).value()

I'm getting this result:

[false, false, false]

Any reason why this is the output? map expectes to get a callback, and suppose to invoke the callback on each element the array has. I'm passing it an array instead, so what happens here?