Deno fix #6131 (#6248)

* fix: #6131

* fix: delete

* update code

* fix: fix bug

* add some tests

* fix route error

* delete comment

* delete trash code

---------

Co-authored-by: wuls <linsheng.wu@beantechs.com>

3 files changed, 21 insertions, 6 deletions

diff --git a/packages/integrations/deno/src/code-constant.ts b/packages/integrations/deno/src/code-constant.ts
new file mode 100644
index 000000000..bf272e397
--- /dev/null
+++ b/packages/integrations/deno/src/code-constant.ts
@@ -0,0 +1,2 @@
+export const DEFAULTIMPORT = `import { Server } from "https://deno.land/std@0.167.0/http/server.ts"; \n import { fetch } from "https://deno.land/x/file_fetch/mod.ts";\nimport { fileExtension } from "https://deno.land/x/file_extension@v2.1.0/mod.ts";`
+export const DEFAULTSTART = `const _start = 'start'; \n if(_start in adapter) { \nadapter[_start](_manifest, _args);}`
diff --git a/packages/integrations/deno/src/index.ts b/packages/integrations/deno/src/index.ts
index 82da15188..891623ead 100644
--- a/packages/integrations/deno/src/index.ts
+++ b/packages/integrations/deno/src/index.ts
@@ -3,6 +3,7 @@ import esbuild from 'esbuild';
 import * as fs from 'fs';
 import * as npath from 'path';
 import { fileURLToPath } from 'url';
+import * as CONSTANT from './code-constant'
 
 interface BuildConfig {
 	server: URL;
@@ -70,6 +71,8 @@ export default function createIntegration(args?: Options): AstroIntegration {
 			'astro:build:done': async () => {
 				const entryUrl = new URL(_buildConfig.serverEntry, _buildConfig.server);
 				const pth = fileURLToPath(entryUrl);
+				const content = await fs.readFileSync(pth, 'utf8')
+				await fs.writeFileSync(pth, `${CONSTANT.DEFAULTIMPORT}${content}${CONSTANT.DEFAULTSTART}`);
 				await esbuild.build({
 					target: 'es2020',
 					platform: 'browser',
diff --git a/packages/integrations/deno/src/server.ts b/packages/integrations/deno/src/server.ts
index 00e1c43db..ed358f2f0 100644
--- a/packages/integrations/deno/src/server.ts
+++ b/packages/integrations/deno/src/server.ts
@@ -1,10 +1,7 @@
 // Normal Imports
 import type { SSRManifest } from 'astro';
 import { App } from 'astro/app';
-// @ts-ignore
-import { Server } from 'https://deno.land/std@0.167.0/http/server.ts';
-// @ts-ignore
-import { fetch } from 'https://deno.land/x/file_fetch/mod.ts';
+
 
 interface Options {
 	port?: number;
@@ -12,6 +9,7 @@ interface Options {
 	start?: boolean;
 }
 
+// @ts-ignore
 let _server: Server | undefined = undefined;
 let _startPromise: Promise<void> | undefined = undefined;
 
@@ -39,8 +37,19 @@ export function start(manifest: SSRManifest, options: Options) {
 		// try to fetch a static file instead
 		const url = new URL(request.url);
 		const localPath = new URL('./' + app.removeBase(url.pathname), clientRoot);
-		const fileResp = await fetch(localPath.toString());
-
+		const stringLocalPath = localPath.toString();
+		// @ts-ignore
+		const extendName = fileExtension(stringLocalPath);
+		const fileResp = await fetch(
+			!extendName
+				? `${
+						stringLocalPath.endsWith('/')
+							? `${stringLocalPath}index.html`
+							: `${stringLocalPath}/index.html`
+				  }`
+				: stringLocalPath
+		);
+		
 		// If the static file can't be found
 		if (fileResp.status == 404) {
 			// Render the astro custom 404 page
@@ -60,6 +69,7 @@ export function start(manifest: SSRManifest, options: Options) {
 	};
 
 	const port = options.port ?? 8085;
+	// @ts-ignore
 	_server = new Server({
 		port,
 		hostname: options.hostname ?? '0.0.0.0',