Initial commit (by create-cloudflare CLI)

cool-dawn-3d3b/node_modules/wrangler/templates/middleware/middleware-serve-static-assets.ts

@@ -0,0 +1,56 @@
+/// <reference path="middleware-serve-static-assets.d.ts"/>
+
+import {
+	getAssetFromKV,
+	NotFoundError,
+	MethodNotAllowedError,
+	serveSinglePageApp,
+} from "@cloudflare/kv-asset-handler";
+import type { Options } from "@cloudflare/kv-asset-handler";
+import { spaMode, cacheControl } from "config:middleware/serve-static-assets";
+import type * as kvAssetHandler from "@cloudflare/kv-asset-handler";
+import manifest from "__STATIC_CONTENT_MANIFEST";
+const ASSET_MANIFEST = JSON.parse(manifest);
+
+import type { Middleware } from "./common";
+
+const staticAssets: Middleware = async (request, env, _ctx, middlewareCtx) => {
+	let options: Partial<Options> = {
+		ASSET_MANIFEST,
+		ASSET_NAMESPACE: env.__STATIC_CONTENT,
+		cacheControl: cacheControl,
+		mapRequestToAsset: spaMode ? serveSinglePageApp : undefined,
+	};
+
+	try {
+		const page = await (getAssetFromKV as typeof kvAssetHandler.getAssetFromKV)(
+			{
+				request,
+				waitUntil(promise) {
+					return _ctx.waitUntil(promise);
+				},
+			},
+			options
+		);
+
+		// allow headers to be altered
+		const response = new Response(page.body, page);
+
+		response.headers.set("X-XSS-Protection", "1; mode=block");
+		response.headers.set("X-Content-Type-Options", "nosniff");
+		response.headers.set("X-Frame-Options", "DENY");
+		response.headers.set("Referrer-Policy", "unsafe-url");
+		response.headers.set("Feature-Policy", "none");
+
+		return response;
+	} catch (e) {
+		if (e instanceof NotFoundError || e instanceof MethodNotAllowedError) {
+			// if a known error is thrown then serve from actual worker
+			return await middlewareCtx.next(request, env);
+		}
+		// otherwise it's a real error, so throw it
+		throw e;
+	}
+};
+
+export default staticAssets;