feat: add bun web framework adapter (#583)

Co-authored-by: winstxnhdw <winstxnhdw@gmail.com>
Co-authored-by: KnorpelSenf <shtrog@gmail.com>

src/convenience/frameworks.ts

@@ -95,6 +95,11 @@ export type AzureAdapter = (request: {
     };
 }) => ReqResHandler;
 
+export type BunAdapter = (request: {
+    headers: Headers;
+    json: () => Promise<Update>;
+}) => ReqResHandler<Response>;
+
 export type CloudflareAdapter = (event: {
     request: Request;
     respondWith: (response: Promise<Response>) => void;
@@ -289,6 +294,24 @@ const azure: AzureAdapter = (request, context) => ({
     },
 });
 
+/** Bun.serve */
+const bun: BunAdapter = (request) => {
+    let resolveResponse: (response: Response) => void;
+    return {
+        update: request.json(),
+        header: request.headers.get(SECRET_HEADER) || undefined,
+        end: () => {
+            resolveResponse(ok());
+        },
+        respond: (json) => {
+            resolveResponse(okJson(json));
+        },
+        unauthorized: () => {
+            resolveResponse(unauthorized());
+        },
+    };
+};
+
 /** Native CloudFlare workers (service worker) */
 const cloudflare: CloudflareAdapter = (event) => {
     let resolveResponse: (response: Response) => void;
@@ -521,6 +544,7 @@ export const adapters = {
     "aws-lambda": awsLambda,
     "aws-lambda-async": awsLambdaAsync,
     azure,
+    bun,
     cloudflare,
     "cloudflare-mod": cloudflareModule,
     express,

test/convenience/webhook.test.ts

@@ -1,5 +1,3 @@
-/// <reference types="npm:@types/node" />
-
 import type { Hono } from "https://deno.land/x/hono/mod.ts";
 import type {
     APIGatewayProxyEventV2,
@@ -28,6 +26,22 @@ describe("webhook", () => {
             ));
     });
 
+    it("Bun.serve should be compatible with grammY adapter", () => {
+        type BunServe = (
+            options: {
+                fetch: (request: Request) => Response | Promise<Response>;
+            },
+        ) => object;
+
+        const handler = webhookCallback(bot, "bun");
+        const serve = (() => {}) as unknown as BunServe;
+        serve({
+            fetch: (request) => {
+                return handler(request);
+            },
+        });
+    });
+
     it("Cloudflare Workers should be compatible with grammY adapter", async () => {
         const req = {
             json: () => ({}),