refactor: consolidate 0-slots handling to rely on markdown

Author: melissag-ensemble

src/steps/mdx-to-gridtables.ts

@@ -72,28 +72,22 @@ export default function mdxToBlocks(ctx: Helix.UniversalContext) {
       continue;
     }
 
-    const isHorizontalLine = node.name === 'HorizontalLine';
-
-    // These components does not a fallback repeat
-    const isDefaultNode = node.name === 'Fragment' || node.name === 'iframe';
-
     // get slots
     const slotsAttr = getAttribute(node, 'slots');
-    const slotsValue = getAttributeValue(slotsAttr, '');
+    const slotsValue = getAttributeValue(slotsAttr, null);
     // if (!slotsValue) {
     //   // TODO: throw error for invalid document
     //   break;
     // }
-    const slots = isHorizontalLine
-      ? []
-      : slotsValue
-        .split(',')
+    const slots = slotsValue
+      ? slotsValue.split(',')
         .map((slot) => slot.trim())
-        .filter((slot) => slot.length > 0);
+        .filter((slot) => slot.length > 0)
+      : [];
 
     // repeat the block N times if repeat="N" is set
     const repeatAttr = getAttribute(node, 'repeat');
-    const repeat = isDefaultNode ? 0 : parseInt(getAttributeValue(repeatAttr, '1'), 10);
+    const repeat = parseInt(getAttributeValue(repeatAttr, '1'), 10);
 
     // get variants as string
     const variantAttr = getAttribute(node, 'variant');