Sveltekit & Fleek (IPFS) import syntax problem?

Question

I have managed to use fleek to update IPFS via straight javascript. I am now trying to add this functionality to a clean install of a svelteKit app. I think I am having trouble with the syntax around imports, but am not sure what I am doing wrong. When I click the button on the index.svelte I get the following error

Uncaught ReferenceError: require is not defined
    uploadIPFS upload.js:3
    listen index.mjs:412..........(I truncated the error here)

A few thoughts

I am wondering if it could be working in javascript because it is being called in node (running on the server) but running on the client in svelte?

More Details

The index.svelte file looks like this

<script>
    import {uploadIPFS} from '../IPFS/upload'
</script>

<button on:click={uploadIPFS}>
    upload to ipfs
</button>

the upload.js file looks like this

export const uploadIPFS = () => {
  const fleek = require('@fleekhq/fleek-storage-js');   
    const apiKey = 'cZsQh9XV5+6Nd1+Bou4OuA==';
    const apiSecret = '';
    const data = 'pauls test load';
    const testFunctionUpload = async (data) => {
        const date = new Date();
        const timestamp = date.getTime();

        const input = {
            apiKey,
            apiSecret,
            key: `file-${timestamp}`,
            data
        };

        try {
            const result = await fleek.upload(input);
            console.log(result);
        } catch (e) {
            console.log('error', e);
        }
    };

    testFunctionUpload(data);
}; 

I have also tried using the other import syntax and when I do I get the following error

500

global is not defined....

import with the other syntax is

import fleekStorage from '@fleekhq/fleek-storage-js';
function uploadIPFS()  {

  console.log('fleekStorage',fleekStorage)
};

export default uploadIPFS;

*I erased the api secret in the code above. In future I will store these in a .env file.

Even more details (if you need them)

The file below will update IPFS and runs via the command npm run upload That file is below. For my version that I used in svelte I simplified the file by removing all the file management and just loading a variable instead of a file (as in the example below)

const fs = require('fs');
const path = require('path');
const fleek = require('@fleekhq/fleek-storage-js');   
require('dotenv').config()
const apiKey = process.env.FLEEK_API_KEY;
const apiSecret = process.env.FLEEK_API_SECRET;


const testFunctionUpload = async (data) => {
  const date = new Date();
  const timestamp = date.getTime();

  const input = {
    apiKey,
    apiSecret,
    key: `file-${timestamp}`,
    data,
  };

  try {
    const result = await fleek.upload(input);
    console.log(result);
  } catch(e) {
    console.log('error', e);
  }
}
// File management not used a my svelte version to keep it simple
const filePath = path.join(__dirname, 'README.md');

fs.readFile(filePath, (err, data) => {
  if(!err) {
    testFunctionUpload(data);
  }
})