Remove query strings before sending request to origin

export default {
  async fetch(request) {
    // Define the query strings you want to remove
    const queryStringsToRemove = ["utm_source", "utm_medium", "utm_campaign"];

    // Get the URL from the request
    const url = new URL(request.url);

    // Remove the specified query strings
    queryStringsToRemove.forEach((query) => {
      url.searchParams.delete(query);
    });

    // Create a new request with the modified URL
    const modifiedRequest = new Request(url, request);

    // Pass the modified request to the origin
    const response = await fetch(modifiedRequest);

    return response;
  },
};