From 7a233c5bc4d165eb20288bd8748c6bb09356ea6e Mon Sep 17 00:00:00 2001
From: Aysajan Eziz <aeziz@northset.ai>
Date: Mon, 13 Jul 2026 16:15:02 -0400
Subject: [PATCH] fix(swift): emit JSONNull hash(into:) by default

Signed-off-by: Aysajan Eziz <aeziz@northset.ai>
---
 .../src/language/Swift/SwiftRenderer.ts       |  6 ++---
 test/unit/swift-json-null-hashable.test.ts    | 27 +++++++++++++++++++
 2 files changed, 29 insertions(+), 4 deletions(-)
 create mode 100644 test/unit/swift-json-null-hashable.test.ts

diff --git a/packages/quicktype-core/src/language/Swift/SwiftRenderer.ts b/packages/quicktype-core/src/language/Swift/SwiftRenderer.ts
index b9fae90ee9..fa77615b20 100644
--- a/packages/quicktype-core/src/language/Swift/SwiftRenderer.ts
+++ b/packages/quicktype-core/src/language/Swift/SwiftRenderer.ts
@@ -1185,12 +1185,10 @@ encoder.dateEncodingStrategy = .formatted(formatter)`);
 			return 0
 	}`);
 
-                if (this._options.swift5Support) {
-                    this.ensureBlankLine();
-                    this.emitMultiline(`    public func hash(into hasher: inout Hasher) {
+                this.ensureBlankLine();
+                this.emitMultiline(`    public func hash(into hasher: inout Hasher) {
 			// No-op
 	}`);
-                }
             }
 
             this.ensureBlankLine();
diff --git a/test/unit/swift-json-null-hashable.test.ts b/test/unit/swift-json-null-hashable.test.ts
new file mode 100644
index 0000000000..78c9cf9288
--- /dev/null
+++ b/test/unit/swift-json-null-hashable.test.ts
@@ -0,0 +1,27 @@
+import {
+    InputData,
+    JSONSchemaInput,
+    quicktype,
+} from "../../packages/quicktype-core/src/index.js";
+import { expect, test } from "vitest";
+
+const schema = JSON.stringify({
+    type: "object",
+    properties: {
+        value: {},
+    },
+    required: ["value"],
+});
+
+test("emits hash(into:) for JSONNull by default", async () => {
+    const schemaInput = new JSONSchemaInput(undefined);
+    await schemaInput.addSource({ name: "TopLevel", schema });
+
+    const inputData = new InputData();
+    inputData.addInput(schemaInput);
+
+    const result = await quicktype({ inputData, lang: "swift" });
+    const output = result.lines.join("\n");
+
+    expect(output).toContain("public func hash(into hasher: inout Hasher)");
+});