fix: Use status code specified in context

Fix elysiajs#56

Previously the html plugin would always return 200 for HTML responses.
This commit adds support for reading the status code in set.status to
determine which status code to use. It fallbacks to 200 if no status
code is set. It uses the StatusMap exported by Elysia to map res.status
values supplied as string literals.

Example for statuscode has been added to examples folder showcasing
returning Forbidden status. Added test for overriding status code.

Needed to upgrade Elysia peer and dev dependency to a newer version as
the StatusMap value was not available in elysia 1.0.2. Running bun
install and pnpm install also updated the patch versions of @kitajs/*
dependencies.

example/index.tsx

@@ -71,3 +71,7 @@ app.handle(new Request('http://localhost:8080/'))
 app.handle(new Request('http://localhost:8080/'))
 	.then((x) => x.headers.toJSON())
 	.then(console.log)
+
+	app.handle(new Request('http://localhost:8080/'))
+	.then((x) => x.status)
+	.then(console.log)

example/statuscode.tsx

@@ -0,0 +1,16 @@
+import { Elysia } from 'elysia'
+import { html } from '../src'
+
+const app = new Elysia()
+	.use(html({ autoDetect: true }))
+	.get('/a', ({ html, set }) => {
+        set.status = 'Forbidden'
+        return html(`<h1>Forbidden!</h1>`)
+    })
+	.compile()
+
+console.log(app.routes[0]?.composed?.toString())
+
+app.handle(new Request('http://localhost:8080/a'))
+	.then((x) => x.status)
+	.then(console.log)

package.json

@@ -52,13 +52,13 @@
     "format": "prettier --write ."
   },
   "peerDependencies": {
-    "elysia": ">= 1.0.2"
+    "elysia": ">= 1.0.6"
   },
   "devDependencies": {
     "@elysiajs/stream": "^0.7.2",
     "@types/bun": "^1.0.4",
     "@types/node": "^20.7.2",
-    "elysia": "1.0.2",
+    "elysia": "1.0.6",
     "eslint": "^8.50.0",
     "rimraf": "^5.0.5",
     "typescript": "^5.2.2"

src/handler.ts

@@ -5,8 +5,10 @@ import { isHtml, isTagHtml } from './utils'
 export function handleHtml(
 	value: string | Readable | Promise<string | Readable>,
 	options: HtmlOptions,
-	hasContentType: boolean
+	hasContentType: boolean,
+	status?: number
 ): Promise<Response | string> | Response | string {
+
 	// Only use promises if value is a promise itself
 	if (value instanceof Promise) {
 		return value.then((v) => handleHtml(v, options, hasContentType))
@@ -24,9 +26,7 @@ export function handleHtml(
 
 		return new Response(
 			value,
-			hasContentType
-				? undefined
-				: { headers: { 'content-type': options.contentType! } }
+			initValue(options, hasContentType, status)
 		)
 	}
 
@@ -60,8 +60,13 @@ export function handleHtml(
 
 	return new Response(
 		stream as any,
-		hasContentType
-			? undefined
-			: { headers: { 'content-type': options.contentType! } }
+		initValue(options, hasContentType, status)
 	)
 }
+
+
+function initValue(options: HtmlOptions, hasContentType: boolean, status?: number) {
+	return hasContentType
+		? { status: status?? 200 }
+		: { headers: { 'content-type': options.contentType! }, status: status?? 200 }
+}

src/html.ts

@@ -1,4 +1,4 @@
-import { Elysia } from 'elysia'
+import { Elysia, StatusMap } from 'elysia'
 import { Readable } from 'node:stream'
 import { renderToStream } from '@kitajs/html/suspense'
 
@@ -17,22 +17,26 @@ export function html(options: HtmlOptions = {}) {
 		name: '@elysiajs/html',
 		seed: options
 	}).derive({ as: 'global' }, ({ set }) => {
+
 		return {
 			html(
 				value: Readable | JSX.Element
 			): Promise<Response | string> | Response | string {
-				return handleHtml(value, options, 'content-type' in set.headers)
+				const status = typeof set.status === 'string' ? StatusMap[set.status] : set.status
+				return handleHtml(value, options, 'content-type' in set.headers, status)
 			},
 			stream<A = any>(
 				value: (this: void, arg: A & { id: number }) => JSX.Element,
 				args: A
 			) {
+				const status = typeof set.status === 'string' ? StatusMap[set.status] : set.status
 				return handleHtml(
 					renderToStream((id) =>
 						(value as Function)({ ...args, id })
 					),
 					options,
-					'content-type' in set.headers
+					'content-type' in set.headers,
+					status
 				)
 			}
 		}
@@ -48,10 +52,13 @@ export function html(options: HtmlOptions = {}) {
 					// @kitajs/html stream
 					(value instanceof Readable && 'rid' in value)
 				) {
+					const status = typeof set.status === 'string' ? StatusMap[set.status] : set.status
+
 					const response = await handleHtml(
 						value,
 						options,
-						'content-type' in set.headers
+						'content-type' in set.headers,
+						status
 					)
 
 					if (response instanceof Response) return response

test/index.test.ts

@@ -69,6 +69,16 @@ describe('HTML', () => {
 			'text/html; charset=utf8'
 		)
 	})
+
+	it('returns user provided status code', async () => {
+		const app = new Elysia().use(html()).get('/', ({ html, set }) => {
+			set.status = 404
+			return html('<h1>Not Found</h1>')
+		})
+
+		const res = await app.handle(req('/'))
+		expect(res.status).toBe(404)
+	})
 })
 
 describe('HTML vs No html - header', () => {