message: Split error into multiple lines
diff: @@ -151,7 +151,9 @@ async function readMetaData(path, {
  // file, then fail hard and let the user know that they need to pick one or the
  // other
  if (hasNowJson) {
  - const e = new Error('You have a `now` configuration field inside `package.json`, but configuration is also present in `now.json`! Please ensure there\'s a single source of configuration by removing one')
  + const e = new Error('You have a `now` configuration field' +
  + 'inside `package.json`, but configuration is also present' +
  + 'in `now.json`! Please ensure there\'s a single source of configuration by removing one')
  e.userError = true
  throw e
  } else {
  