Merge pull request #1391 from bids-standard/1389_fix_author_check

Skip single author check if author is not string.

Author: rwblair

bids-validator/validators/bids/checkDatasetDescription.js

@@ -49,7 +49,7 @@ const checkAuthorField = authors => {
     if (authors.length == 1) {
       const author = authors[0]
       // check the number of commas in the single author field
-      if (author.split(',').length <= 2) {
+      if (typeof author == 'string' && author.split(',').length <= 2) {
         // if there is one or less comma in the author field,
         // we suspect that the curator has not listed everyone involved
         issues.push(new Issue({ code: 102, evidence: author }))