Filter out false menu items (#69)

Author: medusalix

fixture.js

@@ -36,7 +36,8 @@ contextMenu({
 	],
 	append: () => {},
 	showCopyImageAddress: true,
-	showSaveImageAs: true
+	showSaveImageAs: true,
+	showInspectElement: false
 });
 
 (async () => {

index.js

@@ -19,7 +19,7 @@ const removeUnusedMenuItems = menuTemplate => {
 	let notDeletedPreviousElement;
 
 	return menuTemplate
-		.filter(menuItem => menuItem !== undefined && menuItem.visible !== false)
+		.filter(menuItem => menuItem !== undefined && menuItem !== false && menuItem.visible !== false)
 		.filter((menuItem, index, array) => {
 			const toDelete = menuItem.type === 'separator' && (!notDeletedPreviousElement || index === array.length - 1 || array[index + 1].type === 'separator');
 			notDeletedPreviousElement = toDelete ? notDeletedPreviousElement : menuItem;