Implement tagName: '' assignment

Author: Turbo87

lib/transform.js

@@ -127,7 +127,17 @@ function transform(componentPath) {
   }
   debug(`${componentPath}: templatePath: %o`, templatePath);
 
-  // TODO set `tagName: ''`
+  // set `tagName: ''`
+  let tagNamePath = j(properties)
+    .find(j.ObjectProperty)
+    .filter(path => path.parentPath === properties)
+    .filter(path => isProperty(path, 'tagName'));
+
+  if (tagNamePath.length === 1) {
+    j(tagNamePath.get('value')).replaceWith(j.stringLiteral(''));
+  } else {
+    properties.unshift(j.objectProperty(j.identifier('tagName'), j.stringLiteral('')));
+  }
 
   // remove `elementId`, `attributeBindings`, `classNames` and `classNameBindings`
   j(properties)