import { buildClient } from '@datocms/cma-client-node';
async function run() {
  const client = buildClient({ apiToken: '<YOUR_API_TOKEN>' });
  
  const workflowId = '439239';
  
  const workflow = await client.workflows.update(workflowId, {
    name: 'Approval by editors required',
    api_key: 'approval_by_editors',
    stages: [
      {
        id: 'waiting_for_review',
        name: 'Waiting for review',
        initial: true
      }
    ]
  });
  
  console.log(workflow);
}
run();

{
  id: '439239',
  name: 'Approval by editors required',
  api_key: 'approval_by_editors',
  stages: [
    {
      id: 'waiting_for_review',
      name: 'Waiting for review',
      initial: true
    }
  ]
}