I am using the following method to access a Google Spreadsheet using Javascript to, for example, insert a row of data:

const Sheets = require("@googleapis/sheets");
const jwt = new Sheets.auth.JWT(xxemailxx, null, xxprivate keyxx, [...]);
await jwt.authorize();

const sheets = Sheets.sheets("v4");
sheets.spreadsheets.values.append({
    auth: jwt,
    spreadsheetId: "xxxxxxx",
    range: "Sheet1",
    resource: { values: [[1,2,3,4]]}
  }, (err, response) => {
   // ...callback
   }
});

Note that I pass the JWT in the API call. This method has worked well for some years. Now I want to use batchUpdate to append a block of rows. I can’t find documentation for Node.js. The link in the @googleapis/sheets repo points to this and this which looks like it’s for web service APIs. I tried various permutations to pass in a requestbody but was not successful.

What is a workable method to use the batchUpdate api? Is there documentation on batchUpdate more specific to Node.js?