feat: support json.RawMessage

schema.go

@@ -30,9 +30,10 @@ const (
 
 // Special JSON Schema formats.
 var (
-	timeType = reflect.TypeOf(time.Time{})
-	ipType   = reflect.TypeOf(net.IP{})
-	urlType  = reflect.TypeOf(url.URL{})
+	timeType       = reflect.TypeOf(time.Time{})
+	ipType         = reflect.TypeOf(net.IP{})
+	urlType        = reflect.TypeOf(url.URL{})
+	rawMessageType = reflect.TypeOf(json.RawMessage{})
 )
 
 func deref(t reflect.Type) reflect.Type {
@@ -597,6 +598,8 @@ func SchemaFromType(r Registry, t reflect.Type) *Schema {
 		return &Schema{Type: TypeString, Format: "uri"}
 	case ipType:
 		return &Schema{Type: TypeString, Format: "ipv4"}
+	case rawMessageType:
+		return &Schema{}
 	}
 
 	minZero := 0.0

schema_test.go

@@ -139,6 +139,11 @@ func TestSchema(t *testing.T) {
 			input:    net.IPv4(127, 0, 0, 1),
 			expected: `{"type": "string", "format": "ipv4"}`,
 		},
+		{
+			name:     "json.RawMessage",
+			input:    &json.RawMessage{},
+			expected: `{}`,
+		},
 		{
 			name:     "bytes",
 			input:    []byte("test"),

validate_test.go

@@ -811,6 +811,13 @@ var validateTests = []struct {
 		},
 		errs: []string{"expected object with at most 1 properties"},
 	},
+	{
+		name: "json.RawMessage success",
+		typ: reflect.TypeOf(struct {
+			Value json.RawMessage `json:"value"`
+		}{}),
+		input: map[string]any{"value": map[string]any{"some": []any{"thing"}}},
+	},
 	{
 		name:  "object struct success",
 		typ:   reflect.TypeOf(struct{}{}),