diff --git a/.gitignore b/.gitignore
index 5081656b..8a3d3466 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 # Logs
 logs
 *.log
+*.err
 npm-debug.log*
 
 # Runtime data
@@ -32,9 +33,18 @@ jspm_packages
 
 # Optional npm cache directory
 .npm
+package-lock.json
 
 # Optional REPL history
 .node_repl_history
 
 # built code
 lib
+es
+.vue-meta
+
+# examples yarn lock
+examples/yarn.lock
+
+# env vars
+.env*