From c079305e1a08f0475f82eefc29a07e9650d07ee0 Mon Sep 17 00:00:00 2001
From: Danny Povolotski <dannypovolotski@gmail.com>
Date: Sat, 3 Feb 2024 21:56:45 +0300
Subject: [PATCH] feat: discriminator

---
 schema.json | 26 +++++++++++++++++++++++++-
 src/test.ts |  2 +-
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/schema.json b/schema.json
index d3b972c..1ad906e 100644
--- a/schema.json
+++ b/schema.json
@@ -132,7 +132,31 @@
       "title": "specificationExtension"
     },
     "JSONSchema": {
-      "$ref": "https://raw.githubusercontent.com/json-schema-tools/meta-schema/1.5.9/src/schema.json"
+      "allOf": [
+        {
+          "$ref": "https://raw.githubusercontent.com/json-schema-tools/meta-schema/1.5.9/src/schema.json"
+        },
+        {
+          "$ref": "#/definitions/discriminatorObject"
+        }
+      ]
+    },
+    "discriminatorObject": {
+      "type": "object",
+      "required": [
+        "propertyName"
+      ],
+      "properties": {
+        "propertyName": {
+          "type": "string"
+        },
+        "mapping": {
+          "type": "object",
+          "additionalProperties": {
+            "type": "string"
+          }
+        }
+      }
     },
     "referenceObject": {
       "title": "referenceObject",
diff --git a/src/test.ts b/src/test.ts
index 599e951..7f55e83 100644
--- a/src/test.ts
+++ b/src/test.ts
@@ -20,7 +20,7 @@ describe("meta-schema", () => {
     const dereffed = await deref.resolve();
     expect(dereffed).toBeTruthy();
     expect(dereffed.definitions).not.toBeDefined();
-    expect(dereffed.properties.methods.items.oneOf[0].properties.result.oneOf[0].properties.schema.title).toBe("JSONSchema");
+    expect(dereffed.properties.methods.items.oneOf[0].properties.result.oneOf[0].properties.schema.allOf[0].title).toBe("JSONSchema");
     expect(dereffed.properties.methods.items.oneOf[0].properties.result.oneOf[1].title).toBe("referenceObject");
   });
 });