Example of loading library from CDN in postman.

postmanCdn.js

// The example at https://blog.postman.com/adding-external-libraries-in-postman/
// was failing for me due to exports, for this particular library stripping the last 3 lines loaded the library successfully.
// NOTE: this particular library does not work in Postman due to missing dependencies from node/browser

function removeLastLines(text, num) {
  // Split the text into lines
  const lines = text.split('\n');

  // Remove the last two lines
  lines.splice(-num); 

  // Join the remaining lines back into a single string
  const modifiedText = lines.join('\n');

  return modifiedText;
}
pm.sendRequest("https://unpkg.com/@noble/ed25519", (err, res) => {
   //convert the response to text and save it as an environment variable
  if (err) {
    console.log(err)
    return
  }
  if (res.code === 200) {
    var stream = removeLastLines(res.stream.toString(), 3)
  }

   pm.collectionVariables.set("library", stream);
 
   // eval will evaluate the JavaScript code and initialize the min.js
   eval(pm.collectionVariables.get("library"));
 
   // you can call methods in the cdn file using this keyword


})