My code stops working when i add an import statement

I'm making a browser extension/addon, and need to get the value of a specific variable stored in another file. However, as soon as I add the import statement to that file my code stops working.

import "./checkStatus"

function randomFunc(text, element) {
  // code
}

function recurse(element) {
  // more code
}
var html = document.getElementsByTagName('html')[0];
recurse(html)

Is there something I'm doing wrong that's causing it to break?