fix *ByTypeAsArray node methods to always return arrays

src/models/node.js

@@ -280,9 +280,14 @@ const Node = {
 
   getBlocksByTypeAsArray(type) {
     return this.nodes.reduce((array, node) => {
-      if (node.kind != 'block') return array
+      if (node.kind != 'block') {
-      if (node.isLeafBlock() && node.type == type) return array.push(node)
+        return array
-      return array.concat(node.getBlocksByTypeAsArray(type))
+      } else if (node.isLeafBlock() && node.type == type) {
+        array.push(node)
+        return array
+      } else {
+        return array.concat(node.getBlocksByTypeAsArray(type))
+      }
     }, [])
   },
 
@@ -766,9 +771,14 @@ const Node = {
 
   getInlinesByTypeAsArray(type) {
     return this.nodes.reduce((inlines, node) => {
-      if (node.kind == 'text') return inlines
+      if (node.kind == 'text') {
-      if (node.isLeafInline() && node.type == type) return inlines.push(node)
+        return inlines
-      return inlines.concat(node.getInlinesByTypeAsArray(type))
+      } else if (node.isLeafInline() && node.type == type) {
+        inlines.push(node)
+        return inlines
+      } else {
+        return inlines.concat(node.getInlinesByTypeAsArray(type))
+      }
     }, [])
   },