From f2c65ff6646f0e65d4267047916fca033e804d8a Mon Sep 17 00:00:00 2001
From: Ian Hunter <ian@users.noreply.github.com>
Date: Mon, 31 Jan 2022 09:27:18 -0600
Subject: [PATCH] fix bug where some requests pass variables = {} instead of
 variables = undefined

---
 index.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 0e4d11f7..46bec60d 100644
--- a/index.js
+++ b/index.js
@@ -536,8 +536,10 @@ const plugin = fp(async function (app, opts) {
     }
 
     const shouldCompileJit = cached && cached.count++ === minJit
+    const shouldValidateVariables = variables !== undefined && Object.keys(variables).length > 0
+
     // Validate variables
-    if (variables !== undefined && !shouldCompileJit) {
+    if (shouldValidateVariables && !shouldCompileJit) {
       const executionContext = buildExecutionContext({
         schema: fastifyGraphQl.schema,
         document,