const Evernote = require('evernote');

const noteID = 'b6401aaf-8b5d-491f-b9a3-18b6bac5840a'
const token = '';
const serviceHost = 'www.evernote.com.';
const client = new Evernote.Client({ token, serviceHost });
const noteStore = client.getNoteStore();

const newContent = `
<!DOCTYPE en-note SYSTEM "http://xml.evernote.com/pub/enml2.dtd">
<en-note>
    <div>Updated Note</div>
</en-note>
`;

(async () => {
  try {
    const note = await noteStore.getNote(noteID, true, true, true, true);
    console.log('Source content: ')
    console.log(note.content);
    note.content = newContent

    const updateDoc = {
      guid: noteID,
      title: note.title,
      content: newContent
    };

    await noteStore.updateNote(updateDoc)

    console.log('Updated content: ')
    const updateNote = await noteStore.getNote(noteID, true, true, true, true);
    console.log(updateNote.content);
  } catch (e) {
    console.log(e);
  }
})();