fix(schema): Add hint to see if dataset name contains a visible character (#1879)

* add check to see if dataset name contains a visible character

* Update src/schema/rules/checks/hints.yaml

Co-authored-by: Chris Markiewicz <[email protected]>

* js regex expects double slash for character classes in strings

* Revert "js regex expects double slash for character classes in strings"

This reverts commit 1569607.

---------

Co-authored-by: Chris Markiewicz <[email protected]>

Author: rwblair

src/schema/rules/checks/hints.yaml

@@ -34,6 +34,19 @@ TooFewAuthors:
   checks:
     - length(json.Authors) > 1
 
+# 115
+EmptyDatasetName:
+  issue:
+    code: EMPTY_DATASET_NAME
+    message: |
+      The Name field of dataset_description.json is present but empty of visible characters.
+    level: warning
+  selectors:
+    - path == '/dataset_description.json'
+    - type(json.Name) != 'null'
+  checks:
+    - match(json.Name, '\S')
+
 ### Functional files
 
 # 85