From c9fb5bf45cd243b4a37efa6f087c12ac0e1856e3 Mon Sep 17 00:00:00 2001
From: Mir Arif Hasan <arif.ishan05@gmail.com>
Date: Mon, 25 Nov 2024 19:55:40 +0600
Subject: [PATCH] fix: return `0` complexity for introspection fields (#4549)

---
 .../src/plugins/GQLComplexityPlugin.ts                   | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/packages/hoppscotch-backend/src/plugins/GQLComplexityPlugin.ts b/packages/hoppscotch-backend/src/plugins/GQLComplexityPlugin.ts
index 52b89455..31655fac 100644
--- a/packages/hoppscotch-backend/src/plugins/GQLComplexityPlugin.ts
+++ b/packages/hoppscotch-backend/src/plugins/GQLComplexityPlugin.ts
@@ -7,6 +7,7 @@ import {
 import { Plugin } from '@nestjs/apollo';
 import { GraphQLError } from 'graphql';
 import {
+  ComplexityEstimatorArgs,
   fieldExtensionsEstimator,
   getComplexity,
   simpleEstimator,
@@ -29,6 +30,14 @@ export class GQLComplexityPlugin implements ApolloServerPlugin {
           query: document,
           variables: request.variables,
           estimators: [
+            // Custom estimator for introspection fields
+            (args: ComplexityEstimatorArgs) => {
+              const fieldName = args.field.name;
+              if (fieldName.startsWith('__')) {
+                return 0; // Return 0 complexity for introspection fields
+              }
+              return;
+            },
             fieldExtensionsEstimator(),
             simpleEstimator({ defaultComplexity: 1 }),
           ],