Dataset Tags in Workflows Not accessible

That's not supported in that package in the current implementation. You can create an idea in the Ideas Exchange if that's something you would like added.

If you want to instead create your own Code Engine function to achieve that, you can using the following:

const codeengine = require('codeengine')
 
async function getTags(datasetId) {
  const api = `/api/data/v3/datasources/${datasetId}`;
  const response = await codeengine.sendRequest("GET", api);
  console.log(response);
  let array = JSON.parse(response.tags);
  return array;
}