remove all dropbox public links

purge.js

# Using chrome dev tools at https://www.dropbox.com/links/your_links run:
$x('//a[@class="remove-link"]').each( function(x) {
  x.click()
  $x('//button[text()="Delete link"]')[0].click()
})

Firefox console gives the following. Any tips?
TypeError: $x(...).each is not a function

$$('#links-list .mc-popover-trigger').forEach(n=>{
    console.log('delete',n);
    n.click();
    $('.delete-link').click()
    $('.button-primary').click()
});