Update type modifier to avoid create undefined properties

Author: CodingCarlos

lib/modifiers/type.js

@@ -7,33 +7,35 @@
  */
 
 function modify(data, model) {
-	if (!model.type) {
-		return data;
-	} else if(model.typeStrict == true) {
+	if (!model.type || !data || model.typeStrict == true) {
 		return data;
 	}
 
 	let parsed = data;
 
 	switch (model.type.toLowerCase()) {
 		case 'string':
-			parsed = (data) ? String(data) : '';
+			if (data) {
+				parsed = String(data);
+			}
 			break;
 		case 'number':
 			if (!isNaN(Number(data))) {
 				parsed = Number(data);
-			} else {
-				parsed = undefined;
 			}
 			break;
 		case 'boolean':
 			parsed = String(data).toLowerCase() === 'true';
 			break;
 		case 'object':
-			parsed = (typeof data === 'object') ? data : undefined;
-			break;
 		case 'array':
-			parsed = (Array.isArray(data)) ? data : undefined;
+			if(typeof data === 'string') {
+				try {
+					data = JSON.parse(data)
+				} catch (e) {
+					console.error('Tried to parse invalid json string to ' + model.type.toLowerCase());
+				}
+			}
 			break;
 		}