install package

package.json

@@ -109,6 +109,7 @@
     "express": "^4.16.1",
     "express-bunyan-logger": "^1.3.3",
     "express-form": "~0.12.0",
+    "express-mongo-sanitize": "^2.1.0",
     "express-session": "^1.16.1",
     "express-validator": "^6.1.1",
     "express-webpack-assets": "^0.1.0",

yarn.lock

@@ -6029,6 +6029,11 @@ express-form@~0.12.0:
     object-additions "^0.5.1"
     validator "^2.1.0"
 
+express-mongo-sanitize@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/express-mongo-sanitize/-/express-mongo-sanitize-2.1.0.tgz#a8c647787c25ded6e97b5e864d113e7687c5d471"
+  integrity sha512-ELGeH/Tx+kJGn3klCzSmOewfN1ezJQrkqzq83dl/K3xhd5PUbvLtiD5CiuYRmQfoZPL4rUEVjANf/YjE2BpTWQ==
+
 express-session@^1.16.1:
   version "1.16.1"
   resolved "https://registry.yarnpkg.com/express-session/-/express-session-1.16.1.tgz#251ff9776c59382301de6c8c33411af357ed439c"