Fix origin

Former-commit-id: 1abca35a1e83a1ccb2cd39bc04568eb9bc170b15

src/javascript/jsc/config.zig

@@ -27,7 +27,7 @@ pub const DefaultSpeedyDefines = struct {
 pub fn configureTransformOptionsForSpeedyVM(allocator: *std.mem.Allocator, _args: Api.TransformOptions) !Api.TransformOptions {
     var args = _args;
 
-    args.serve = false;
+    // args.serve = false;
     args.write = false;
     args.resolve = Api.ResolveMode.lazy;
     args.generate_node_module_bundle = false;

src/options.zig

@@ -719,6 +719,10 @@ pub const BundleOptions = struct {
         if (transform.serve orelse false) {
             opts.preserve_extensions = true;
             opts.append_package_version_in_query_string = true;
+            if (opts.origin.len == 0) {
+                opts.origin = "/";
+            }
+
             opts.resolve_mode = .lazy;
             var _dirs = [_]string{transform.public_dir orelse opts.public_dir};
             opts.public_dir = try fs.absAlloc(allocator, &_dirs);