diff --git a/.gitignore b/.gitignore
index 24f06e4..32dfaf1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,3 +28,5 @@ build/Release
 # https://docs.npmjs.com/misc/faq#should-i-check-my-node-modules-folder-into-git
 node_modules
 
+# app specific
+data
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..10ed270
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,494 @@
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