Merge pull request #903 from 0xthierry/fix/additional-properties-for-typebox-record

fix: typebox object schemas without properties key

Author: SaltyAom

src/compose.ts

@@ -79,6 +79,7 @@ export const hasAdditionalProperties = (
 		const properties = schema.properties as Record<string, TAnySchema>
 
 		if ('additionalProperties' in schema) return schema.additionalProperties
+		if ('patternProperties' in schema) return false
 
 		for (const key of Object.keys(properties)) {
 			const property = properties[key]

test/core/compose.test.ts

@@ -0,0 +1,14 @@
+import { describe, expect, it } from 'bun:test'
+import { Type } from '@sinclair/typebox'
+import { hasAdditionalProperties } from '../../src/compose'
+
+describe('hasAdditionalProperties', () => {
+		it('should handle object schemas without properties key', () => {
+			const schema = Type.Intersect([
+				Type.Object({ a: Type.String() }),
+				// Record schemas does not have properties key, instead it has patternProperties
+				Type.Record(Type.Number(), Type.String())
+			])
+			expect(hasAdditionalProperties(schema)).toBe(false)
+	})
+})