Fix deno cli script (close #505)

esm-dev · Jan 24, 2023 · 0ceed80 · 0ceed80
1 parent e783d12
commit 0ceed80
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Showing 2 changed files with 14 additions and 0 deletions.
diff --git a/server/handler.go b/server/handler.go
@@ -61,6 +61,15 @@ func esmHandler() rex.Handle {
 		// static routes
 		switch pathname {
 		case "/":
+			// return deno cli script if the `User-Agent` is "Deno"
+			if strings.HasPrefix(ctx.R.UserAgent(), "Deno/") {
+				cliTs, err := embedFS.ReadFile("server/embed/deno_cli.ts")
+				if err != nil {
+					return err
+				}
+				ctx.SetHeader("Content-Type", "application/typescript; charset=utf-8")
+				return bytes.ReplaceAll(cliTs, []byte("v{VERSION}"), []byte(fmt.Sprintf("v%d", VERSION)))
+			}
 			indexHTML, err := embedFS.ReadFile("server/embed/index.html")
 			if err != nil {
 				return err

diff --git a/test/bootstrap.ts b/test/bootstrap.ts
@@ -64,6 +64,11 @@ async function runCliTest() {
     `{"importMap": "import-map.json"}`,
   );
 
+  const res = await fetch("http://localhost:8080/");
+  if (!res.headers.get("content-type")?.startsWith("application/typescript")) {
+    throw new Error(`Invalid content type: ${res.headers.get("content-type")}`);
+  }
+
   const { code, success } = await Deno.run({
     cmd: [
       Deno.execPath(),