From b4cb458a8b24ebd6a866d620586d951dd0927c52 Mon Sep 17 00:00:00 2001
From: Jarkko Laine <jarkko@jlaine.net>
Date: Mon, 13 Jul 2026 10:49:13 +0300
Subject: [PATCH] fix: support graphql 17 (directives may be undefined)

---
 package.json | 2 +-
 src/index.ts | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/package.json b/package.json
index ea7bf35..338c4b2 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
         "upper-case": "^2.0.1"
     },
     "peerDependencies": {
-        "graphql": "^14.6.0 || ^15.0.0 || ^16.0.0",
+        "graphql": "^14.6.0 || ^15.0.0 || ^16.0.0 || ^17.0.0",
         "typescript": ">=5.0.0"
     },
     "engines": {
diff --git a/src/index.ts b/src/index.ts
index 7503e64..a1c68f1 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -728,7 +728,7 @@ export const plugin: PluginFunction<TypescriptMocksPluginConfig> = (schema, docu
             }
         },
         InputObjectTypeDefinition: (node) => {
-            if (node.directives.some((directive) => directive.name.value === 'oneOf')) {
+            if (node.directives?.some((directive) => directive.name.value === 'oneOf')) {
                 inputOneOfTypes.add(node.name.value);
             }
         },
@@ -795,7 +795,7 @@ export const plugin: PluginFunction<TypescriptMocksPluginConfig> = (schema, docu
                     let mockFieldsString = '';
 
                     const { directives } = node;
-                    const hasOneOfDirective = directives.some((directive) => directive.name.value === 'oneOf');
+                    const hasOneOfDirective = directives?.some((directive) => directive.name.value === 'oneOf');
 
                     if (node.fields && node.fields.length > 0 && hasOneOfDirective) {
                         const field = node.fields[0];