Merge pull request #32 from csarven/fix/typeerror-referenced-attribute

Avoid TypeError when referenced attribute is undefined
jhermsmeier · Mar 16, 2024 · 0d043d5 · 0d043d5
2 parents 1389ddb + 629d9c6
commit 0d043d5
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/lib/link.js b/lib/link.js
@@ -85,7 +85,7 @@ class Link {
     var type = value.toLowerCase()
 
     for( var i = 0; i < this.refs.length; i++ ) {
-      if( this.refs[ i ].rel.toLowerCase() === type ) {
+      if( typeof this.refs[ i ].rel === 'string' && this.refs[ i ].rel.toLowerCase() === type ) {
         links.push( this.refs[ i ] )
       }
     }
@@ -108,7 +108,7 @@ class Link {
     var links = []
 
     for( var i = 0; i < this.refs.length; i++ ) {
-      if( this.refs[ i ][ attr ].toLowerCase() === value ) {
+      if( typeof this.refs[ i ][ attr ] === 'string' && this.refs[ i ][ attr ].toLowerCase() === value ) {
         links.push( this.refs[ i ] )
       }
     }
@@ -142,7 +142,7 @@ class Link {
     value = value.toLowerCase()
 
     for( var i = 0; i < this.refs.length; i++ ) {
-      if( this.refs[ i ][ attr ].toLowerCase() === value ) {
+      if( typeof this.refs[ i ][ attr ] === 'string' && this.refs[ i ][ attr ].toLowerCase() === value ) {
         return true
       }
     }