Any risk when trying to read the key to an object that comes from the user?

Question

We write out the API (node ​​module), and we have the following code fragment:

function myFunc(dataFromUser){ var dataArr = Object.keys(dataFromUser).map(function(key){ return {name: key, value: dataFromUser[key]}; }); } 

Users will use myFunc directly, that is, they will pass any object that they want.

Ignoring how dataArr will be used, anyway, when at the point dataFromUser[key] is evaluated, are we vulnerable? Maybe the user can implement getter in a way that could harm us?