Update c3 openapi template to use chanfana and Hono (#6106)

.changeset/metal-seahorses-occur.md

@@ -0,0 +1,6 @@
+---
+"create-cloudflare": minor
+"@cloudflare/prerelease-registry": patch
+---
+
+Update c3 openapi template to use chanfana and Hono

packages/create-cloudflare/templates/openapi/ts/README.md

@@ -1,6 +1,6 @@
 # Cloudflare Workers OpenAPI 3.1
 
-This is a Cloudflare Worker with OpenAPI 3.1 using [itty-router-openapi](https://github.com/cloudflare/itty-router-openapi).
+This is a Cloudflare Worker with OpenAPI 3.1 using [chanfana](https://github.com/cloudflare/chanfana) and [Hono](https://github.com/honojs/hono).
 
 This is an example project made to be used as a quick start into building OpenAPI compliant Workers that generates the
 `openapi.json` schema automatically from code and validates the incoming request to the defined parameters or request body.
@@ -16,10 +16,10 @@ This is an example project made to be used as a quick start into building OpenAP
 
 1. Your main router is defined in `src/index.ts`.
 2. Each endpoint has its own file in `src/endpoints/`.
-3. For more information read the [itty-router-openapi official documentation](https://cloudflare.github.io/itty-router-openapi/).
+3. For more information read the [chanfana documentation](https://chanfana.pages.dev/) and [Hono documentation](https://hono.dev/docs).
 
 ## Development
 
 1. Run `wrangler dev` to start a local instance of the API.
-2. Open `http://localhost:9000/` in your browser to see the Swagger interface where you can try the endpoints.
+2. Open `http://localhost:8787/` in your browser to see the Swagger interface where you can try the endpoints.
 3. Changes made in the `src/` folder will automatically trigger the server to reload, you only need to refresh the Swagger interface.

packages/create-cloudflare/templates/openapi/ts/package.json

@@ -9,7 +9,9 @@
 		"cf-typegen": "wrangler types"
 	},
 	"dependencies": {
-		"@cloudflare/itty-router-openapi": "^1.0.1"
+		"chanfana": "^2.0.2",
+		"zod": "^3.23.8",
+		"hono": "^4.4.7"
 	},
 	"devDependencies": {
 		"@types/node": "20.8.3",

packages/create-cloudflare/templates/openapi/ts/src/endpoints/taskCreate.ts

@@ -1,33 +1,43 @@
-import {
-	OpenAPIRoute,
-	OpenAPIRouteSchema,
-} from "@cloudflare/itty-router-openapi";
+import { Bool, OpenAPIRoute } from "chanfana";
+import { z } from "zod";
 import { Task } from "../types";
 
 export class TaskCreate extends OpenAPIRoute {
-	static schema: OpenAPIRouteSchema = {
+	schema = {
 		tags: ["Tasks"],
 		summary: "Create a new Task",
-		requestBody: Task,
+		request: {
+			body: {
+				content: {
+					"application/json": {
+						schema: Task,
+					},
+				},
+			},
+		},
 		responses: {
 			"200": {
 				description: "Returns the created task",
-				schema: {
-					success: Boolean,
-					result: {
-						task: Task,
+				content: {
+					"application/json": {
+						schema: z.object({
+							series: z.object({
+								success: Bool(),
+								result: z.object({
+									task: Task,
+								}),
+							}),
+						}),
 					},
 				},
 			},
 		},
 	};
 
-	async handle(
-		request: Request,
-		env: any,
-		context: any,
-		data: Record<string, any>
-	) {
+	async handle(c) {
+		// Get validated data
+		const data = await this.getValidatedData<typeof this.schema>();
+
 		// Retrieve the validated request body
 		const taskToCreate = data.body;
 

packages/create-cloudflare/templates/openapi/ts/src/endpoints/taskDelete.ts

@@ -1,38 +1,39 @@
-import {
-	OpenAPIRoute,
-	OpenAPIRouteSchema,
-	Path,
-} from "@cloudflare/itty-router-openapi";
+import { Bool, OpenAPIRoute, Str } from "chanfana";
+import { z } from "zod";
 import { Task } from "../types";
 
 export class TaskDelete extends OpenAPIRoute {
-	static schema: OpenAPIRouteSchema = {
+	schema = {
 		tags: ["Tasks"],
 		summary: "Delete a Task",
-		parameters: {
-			taskSlug: Path(String, {
-				description: "Task slug",
+		request: {
+			params: z.object({
+				taskSlug: Str({ description: "Task slug" }),
 			}),
 		},
 		responses: {
 			"200": {
 				description: "Returns if the task was deleted successfully",
-				schema: {
-					success: Boolean,
-					result: {
-						task: Task,
+				content: {
+					"application/json": {
+						schema: z.object({
+							series: z.object({
+								success: Bool(),
+								result: z.object({
+									task: Task,
+								}),
+							}),
+						}),
 					},
 				},
 			},
 		},
 	};
 
-	async handle(
-		request: Request,
-		env: any,
-		context: any,
-		data: Record<string, any>
-	) {
+	async handle(c) {
+		// Get validated data
+		const data = await this.getValidatedData<typeof this.schema>();
+
 		// Retrieve the validated slug
 		const { taskSlug } = data.params;
 

packages/create-cloudflare/templates/openapi/ts/src/endpoints/taskFetch.ts

@@ -1,45 +1,52 @@
-import {
-	OpenAPIRoute,
-	OpenAPIRouteSchema,
-	Path,
-} from "@cloudflare/itty-router-openapi";
+import { Bool, OpenAPIRoute, Str } from "chanfana";
+import { z } from "zod";
 import { Task } from "../types";
 
 export class TaskFetch extends OpenAPIRoute {
-	static schema: OpenAPIRouteSchema = {
+	schema = {
 		tags: ["Tasks"],
 		summary: "Get a single Task by slug",
-		parameters: {
-			taskSlug: Path(String, {
-				description: "Task slug",
+		request: {
+			params: z.object({
+				taskSlug: Str({ description: "Task slug" }),
 			}),
 		},
 		responses: {
 			"200": {
 				description: "Returns a single task if found",
-				schema: {
-					success: Boolean,
-					result: {
-						task: Task,
+				content: {
+					"application/json": {
+						schema: z.object({
+							series: z.object({
+								success: Bool(),
+								result: z.object({
+									task: Task,
+								}),
+							}),
+						}),
 					},
 				},
 			},
 			"404": {
 				description: "Task not found",
-				schema: {
-					success: Boolean,
-					error: String,
+				content: {
+					"application/json": {
+						schema: z.object({
+							series: z.object({
+								success: Bool(),
+								error: Str(),
+							}),
+						}),
+					},
 				},
 			},
 		},
 	};
 
-	async handle(
-		request: Request,
-		env: any,
-		context: any,
-		data: Record<string, any>
-	) {
+	async handle(c) {
+		// Get validated data
+		const data = await this.getValidatedData<typeof this.schema>();
+
 		// Retrieve the validated slug
 		const { taskSlug } = data.params;
 
@@ -56,7 +63,7 @@ export class TaskFetch extends OpenAPIRoute {
 				},
 				{
 					status: 404,
-				}
+				},
 			);
 		}
 

packages/create-cloudflare/templates/openapi/ts/src/endpoints/taskList.ts

@@ -1,43 +1,46 @@
-import {
-	OpenAPIRoute,
-	OpenAPIRouteSchema,
-	Query,
-} from "@cloudflare/itty-router-openapi";
+import { Bool, Num, OpenAPIRoute } from "chanfana";
+import { z } from "zod";
 import { Task } from "../types";
 
 export class TaskList extends OpenAPIRoute {
-	static schema: OpenAPIRouteSchema = {
+	schema = {
 		tags: ["Tasks"],
 		summary: "List Tasks",
-		parameters: {
-			page: Query(Number, {
-				description: "Page number",
-				default: 0,
-			}),
-			isCompleted: Query(Boolean, {
-				description: "Filter by completed flag",
-				required: false,
+		request: {
+			query: z.object({
+				page: Num({
+					description: "Page number",
+					default: 0,
+				}),
+				isCompleted: Bool({
+					description: "Filter by completed flag",
+					required: false,
+				}),
 			}),
 		},
 		responses: {
 			"200": {
 				description: "Returns a list of tasks",
-				schema: {
-					success: Boolean,
-					result: {
-						tasks: [Task],
+				content: {
+					"application/json": {
+						schema: z.object({
+							series: z.object({
+								success: Bool(),
+								result: z.object({
+									tasks: Task.array(),
+								}),
+							}),
+						}),
 					},
 				},
 			},
 		},
 	};
 
-	async handle(
-		request: Request,
-		env: any,
-		context: any,
-		data: Record<string, any>
-	) {
+	async handle(c) {
+		// Get validated data
+		const data = await this.getValidatedData<typeof this.schema>();
+
 		// Retrieve the validated parameters
 		const { page, isCompleted } = data.query;
 

packages/create-cloudflare/templates/openapi/ts/src/index.ts

@@ -1,29 +1,23 @@
-import { OpenAPIRouter } from "@cloudflare/itty-router-openapi";
+import { fromHono } from "chanfana";
+import { Hono } from "hono";
 import { TaskCreate } from "./endpoints/taskCreate";
 import { TaskDelete } from "./endpoints/taskDelete";
 import { TaskFetch } from "./endpoints/taskFetch";
 import { TaskList } from "./endpoints/taskList";
 
-export const router = OpenAPIRouter({
+// Start a Hono app
+const app = new Hono();
+
+// Setup OpenAPI registry
+const openapi = fromHono(app, {
 	docs_url: "/",
 });
 
-router.get("/api/tasks/", TaskList);
-router.post("/api/tasks/", TaskCreate);
-router.get("/api/tasks/:taskSlug/", TaskFetch);
-router.delete("/api/tasks/:taskSlug/", TaskDelete);
-
-// 404 for everything else
-router.all("*", () =>
-	Response.json(
-		{
-			success: false,
-			error: "Route not found",
-		},
-		{ status: 404 }
-	)
-);
+// Register OpenAPI endpoints
+openapi.get("/api/tasks", TaskList);
+openapi.post("/api/tasks", TaskCreate);
+openapi.get("/api/tasks/:taskSlug", TaskFetch);
+openapi.delete("/api/tasks/:taskSlug", TaskDelete);
 
-export default {
-	fetch: router.handle,
-} satisfies ExportedHandler;
+// Export the Hono app
+export default app;

packages/create-cloudflare/templates/openapi/ts/src/types.ts

@@ -1,9 +1,10 @@
-import { DateTime, Str } from "@cloudflare/itty-router-openapi";
+import { DateTime, Str } from "chanfana";
+import { z } from "zod";
 
-export const Task = {
-	name: new Str({ example: "lorem" }),
-	slug: String,
-	description: new Str({ required: false }),
-	completed: Boolean,
-	due_date: new DateTime(),
-};
+export const Task = z.object({
+	name: Str({ example: "lorem" }),
+	slug: Str(),
+	description: Str({ required: false }),
+	completed: z.boolean().default(false),
+	due_date: DateTime(),
+});

packages/prerelease-registry/functions/utils/repoAllowlist.ts

@@ -2,5 +2,5 @@ export const repos = [
 	"workers-sdk",
 	"next-on-pages",
 	"pages-plugins",
-	"itty-router-openapi",
+	"chanfana",
 ];