etag-plugin

source/plugins/etag-plugin/index.js

@@ -0,0 +1,19 @@
+const etag = require("etag")
+
+const plugin = {
+    name: "etagPlugin",
+    version: "1.0.0",
+    register: (server, options) => {
+        server.ext("onPreResponse", (request, h) => {
+            const response = request.response
+            if (response.isBoom || !response.is("application/json")) {
+                return h.continue
+            }
+            const etagValue = etag(response.source)
+            response.etag(etagValue)
+            return h.continue
+        })
+    },
+}
+
+module.exports = plugin