JavaScript not loading on client

I have the following JS in a Create Variable block that was working fine to parse the URL of the browser but it seems to have stopped working. It was working fine before. The variable "location" is not populating with anything. There are no console errors:

Create Variable block sets first result as currentURL:

Code:
-------
function parseURL() {
const windowURL = window.location.href;
const allSegments = windowURL.split('/');
const relevantSegments = allSegments.slice(4); // slice starts after third '/'
const modifiedSegments = relevantSegments.map(function(segment) {
return segment.replace(/-/g, ' ');
});
return modifiedSegments;
}

//const splitURL = parseURL();
//const currentURL = JSON.stringify(splitURL);
const currentURL = parseURL();

return currentURL;
-------

Then, in a second Create Variable block ("location"), I have:

{{={{currentURL}}[1]=}}

Any ideas why it would have stopped working?