From b122781f18161618e10dbea4a8352acd90b04231 Mon Sep 17 00:00:00 2001
From: Louis Bompart <lbompart@coveo.com>
Date: Tue, 4 Aug 2026 21:26:42 +0200
Subject: [PATCH] feat(typescript-zod): validate integer schemas

---
 .../language/TypeScriptZod/TypeScriptZodRenderer.ts   |  2 +-
 test/inputs/schema/integer-type.2.fail.integer.json   | 11 +++++++++++
 test/languages.ts                                     | 10 +++++++++-
 3 files changed, 21 insertions(+), 2 deletions(-)
 create mode 100644 test/inputs/schema/integer-type.2.fail.integer.json

diff --git a/packages/quicktype-core/src/language/TypeScriptZod/TypeScriptZodRenderer.ts b/packages/quicktype-core/src/language/TypeScriptZod/TypeScriptZodRenderer.ts
index d9d62c617..a562662dc 100644
--- a/packages/quicktype-core/src/language/TypeScriptZod/TypeScriptZodRenderer.ts
+++ b/packages/quicktype-core/src/language/TypeScriptZod/TypeScriptZodRenderer.ts
@@ -109,7 +109,7 @@ export class TypeScriptZodRenderer extends ConvenienceRenderer {
             (_anyType) => "z.any()",
             (_nullType) => "z.null()",
             (_boolType) => "z.boolean()",
-            (_integerType) => "z.number()",
+            (_integerType) => "z.number().int()",
             (_doubleType) => "z.number()",
             (_stringType) => "z.string()",
             (arrayType) => {
diff --git a/test/inputs/schema/integer-type.2.fail.integer.json b/test/inputs/schema/integer-type.2.fail.integer.json
new file mode 100644
index 000000000..dc0c0f155
--- /dev/null
+++ b/test/inputs/schema/integer-type.2.fail.integer.json
@@ -0,0 +1,11 @@
+{
+  "small_positive": 50,
+  "small_negative": -50,
+  "i32_range": 2147483647,
+  "above_i32_max": 2147483648,
+  "below_i32_min": -2147483649,
+  "only_minimum": 3000000000,
+  "only_maximum": -3000000000,
+  "unbounded": 1.5,
+  "large_bounds": -9007199254740991
+}
diff --git a/test/languages.ts b/test/languages.ts
index 5e721fad1..b990c7efe 100644
--- a/test/languages.ts
+++ b/test/languages.ts
@@ -73,6 +73,7 @@ export type LanguageFeature =
     | "no-defaults"
     | "strict-optional"
     | "date-time"
+    | "integer"
     | "integer-string"
     | "bool-string"
     | "uuid"
@@ -2037,7 +2038,14 @@ export const TypeScriptZodLanguage: Language = {
         "e8b04.json",
     ],
     allowMissingNull: false,
-    features: ["enum", "union", "no-defaults", "date-time", "minmaxitems"],
+    features: [
+        "enum",
+        "union",
+        "no-defaults",
+        "date-time",
+        "integer",
+        "minmaxitems",
+    ],
     output: "TopLevel.ts",
     topLevel: "TopLevel",
     skipJSON: [