fix for empty values in id-reference paths

Author: Vlad Balin

dist/index.js

@@ -1,6 +1,6 @@
 {
   "name": "type-r",
-  "version": "2.0.4",
+  "version": "2.0.5",
   "description": "Reactive serializable data layer for modern JS applications",
   "main": "./dist/index.js",
   "jsnext:main": "./lib/index.js",

dist/index.js.map

@@ -35,10 +35,16 @@ export class CompiledReference {
 
         this.tail = splitTail && path.pop();
         this.local = !path.length;
-
-        path.unshift( 'self' );
 
-        this.resolve = <any> new Function( 'self', `return ${ path.join('.') };` );
+        this.resolve = <any> new Function( 'self', `
+            var v = self.${ path.shift() };
+                           
+            ${ path.map( x => `
+                v = v && v.${ x };
+            `).join('')}
+
+            return v;
+        ` );
     }
 }
 

lib/traversable.js

@@ -882,8 +882,7 @@ var CompiledReference = (function () {
         });
         this.tail = splitTail && path.pop();
         this.local = !path.length;
-        path.unshift('self');
-        this.resolve = new Function('self', "return " + path.join('.') + ";");
+        this.resolve = new Function('self', "\n            var v = self." + path.shift() + ";\n                           \n            " + path.map(function (x) { return "\n                v = v && v." + x + ";\n            "; }).join('') + "\n\n            return v;\n        ");
     }
     return CompiledReference;
 }());