Demo for query storing

Change-Id: I947bcac841992c3f6cfd01ab337c265b0d01cb70
diff --git a/node_modules/error/docs.mli b/node_modules/error/docs.mli
new file mode 100644
index 0000000..7a1dac7
--- /dev/null
+++ b/node_modules/error/docs.mli
@@ -0,0 +1,26 @@
+type OptionError<T> := {
+    option: T | null,
+    message: String,
+    type: "OptionError"
+}
+
+type TypedError<T> := {
+    message: String,
+    type: T
+}
+
+type ValidationError := {
+    errors: Array<Error>,
+    message: String,
+    type: "ValidationError"
+}
+
+error/option := (String, T) => OptionError<T>
+
+error/typed := (args: {
+    message: String,
+    type: String,
+    name?: String
+}) => (opts: Object) => TypedError<String>
+
+error/validation := (Array<Error>) => ValidationError