🔧 fix(type-gen): handle inline 200 response schema assignment

Author: SaltyAom

CHANGELOG.md

@@ -1,3 +1,7 @@
+# 1.4.6 - 21 Sep 2025
+Bug fix:
+- type gen: handle inline 200 response schema assignment
+
 # 1.4.5 - 20 Sep 2025
 Improvement:
 - reference model now handle content type correctly

example/gen.ts

@@ -1,10 +1,14 @@
 import { Elysia, t } from 'elysia'
 import { openapi, withHeaders } from '../src/index'
 import { fromTypes } from '../src/gen'
+import z from 'zod'
 
-export const app = new Elysia({ prefix: '/id' })
+export const app = new Elysia()
 	.use(
 		openapi({
+			mapJsonSchema: {
+				zod: z.toJSONSchema
+			},
 			references: fromTypes('example/gen.ts', {
 				debug: true
 			})
@@ -49,13 +53,13 @@ export const app = new Elysia({ prefix: '/id' })
 	.post(
 		'/character',
 		() => ({
-			name: 'Elysia'
+			name: 'Lilith' as const
 		}),
 		{
 			body: 'character.name',
-			response: {
-				200: 'character.thing'
-			}
+			response: z.object({
+				name: z.literal('Lilith')
+			})
 		}
 	)
 	.listen(3000)

package.json

@@ -1,6 +1,6 @@
 {
     "name": "@elysiajs/openapi",
-    "version": "1.4.5",
+    "version": "1.4.6",
     "description": "Plugin for Elysia to auto-generate API documentation",
     "author": {
         "name": "saltyAom",

src/openapi.ts

@@ -290,14 +290,31 @@ export function toOpenAPISchema(
 					))
 						if (isValidSchema(schema)) {
 							if (!hooks.response) hooks.response = {}
+							else if (
+								typeof hooks.response !== 'object' ||
+								(hooks.response as TSchema).type ||
+								(hooks.response as TSchema).$ref ||
+								(hooks.response as any)['~standard']
+							)
+								// @ts-ignore
+								hooks.response = {
+									200: hooks.response as any
+								}
 
 							if (
 								!hooks.response[
 									status as keyof (typeof hooks)['response']
 								]
 							)
-								// @ts-ignore
-								hooks.response[status] = schema
+								try {
+									// @ts-ignore
+									hooks.response[status] = schema
+								} catch (error) {
+									console.log(
+										'[@elysiajs/openapi/gen] Failed to assigned response schema'
+									)
+									console.log(error)
+								}
 						}
 			}
 
@@ -496,8 +513,10 @@ export function toOpenAPISchema(
 
 			if (
 				typeof hooks.response === 'object' &&
+				// TypeBox
 				!(hooks.response as TSchema).type &&
-				!(hooks.response as TSchema).$ref
+				!(hooks.response as TSchema).$ref &&
+				!(hooks.response as any)['~standard']
 			) {
 				for (let [status, schema] of Object.entries(hooks.response)) {
 					const response = unwrapSchema(schema, vendors)