diff --git a/package-lock.json b/package-lock.json
index 025904e..b5c6e84 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,8 +14,8 @@
 				"@hotwired/turbo": "^8.0.2",
 				"@koa/router": "^12.0.1",
 				"@playwright/test": "^1.36.1",
-				"@sealcode/jdd": "^0.2.14",
-				"@sealcode/sealgen": "^0.12.8",
+				"@sealcode/jdd": "^0.2.16",
+				"@sealcode/sealgen": "^0.12.9",
 				"@sealcode/ts-predicates": "^0.4.3",
 				"@types/kill-port": "^2.0.0",
 				"get-port": "^7.0.0",
@@ -26,7 +26,7 @@
 				"object-path": "^0.11.8",
 				"sealious": "^0.17.48",
 				"stimulus": "^2.0.0",
-				"tempstream": "^0.3.3",
+				"tempstream": "^0.3.5",
 				"vitest": "^1.1.0"
 			},
 			"devDependencies": {
@@ -1276,13 +1276,13 @@
 			}
 		},
 		"node_modules/@sealcode/jdd": {
-			"version": "0.2.14",
-			"resolved": "https://registry.npmjs.org/@sealcode/jdd/-/jdd-0.2.14.tgz",
-			"integrity": "sha512-jpPY17WnYqmQLg2K4V1qX9vCi6ti9nLwS7YOOXEZH+6HOxTuC43qeoHun0Z8vKez33dha7Z5n5z9XwXylwKxdg==",
+			"version": "0.2.16",
+			"resolved": "https://registry.npmjs.org/@sealcode/jdd/-/jdd-0.2.16.tgz",
+			"integrity": "sha512-dhuNO7ZevEphE9M8pLlEbEq8aCZsSYeJ/zxkEC/Pc/3OBWalEqm6Gf1S0MKT/SpaKmyKgo7gi/b34EqmiIySJQ==",
 			"dependencies": {
 				"@sealcode/ts-predicates": "^0.5.3",
 				"marked": "^12.0.0",
-				"tempstream": "^0.3.2"
+				"tempstream": "^0.3.4"
 			}
 		},
 		"node_modules/@sealcode/jdd/node_modules/@sealcode/ts-predicates": {
@@ -1302,9 +1302,9 @@
 			}
 		},
 		"node_modules/@sealcode/sealgen": {
-			"version": "0.12.8",
-			"resolved": "https://registry.npmjs.org/@sealcode/sealgen/-/sealgen-0.12.8.tgz",
-			"integrity": "sha512-OyYBc3phnbpso/IjNNvRtR4BsIMrDFiiPmKjUp6aGWy/1b6jYcj5nu60kXcNb/pQDWJeQZzxZNypeBtP3Z+1Rg==",
+			"version": "0.12.9",
+			"resolved": "https://registry.npmjs.org/@sealcode/sealgen/-/sealgen-0.12.9.tgz",
+			"integrity": "sha512-cW3AptUq/QE3RoqpsQ3Zy9vxy4ppJ99KgzPJ3TtotACLaCqDi8LBr7MDpTzqVVExlx9AgOFhF45IaWD6qQvs7g==",
 			"dependencies": {
 				"@koa/router": "^12.0.1",
 				"@sealcode/ts-predicates": "^0.4.3",
@@ -1316,7 +1316,7 @@
 				"prettier": "^2.7.1",
 				"prompts": "^2.4.2",
 				"recursive-readdir": "^2.2.3",
-				"tempstream": "^0.3.0",
+				"tempstream": "^0.3.4",
 				"tiny-glob": "^0.2.9",
 				"ws": "^8.16.0",
 				"yargs": "^17.6.2"
@@ -10162,9 +10162,9 @@
 			}
 		},
 		"node_modules/tempstream": {
-			"version": "0.3.3",
-			"resolved": "https://registry.npmjs.org/tempstream/-/tempstream-0.3.3.tgz",
-			"integrity": "sha512-kC2lAF5CEIzBiO2LB1XHC+hFzaitR+tgtXzvaojTfiqpEjMrgke5eQc5jq52MeXVKxRq4EWqvKxWJ9nMGVU6FA==",
+			"version": "0.3.5",
+			"resolved": "https://registry.npmjs.org/tempstream/-/tempstream-0.3.5.tgz",
+			"integrity": "sha512-qFj9fh48fSllY+FZJWIwLAV9nmP6KVKG3A4cHHlhNzHJ82aCamroc2cKkE/2VHlaj5QeKoKisQbJVJPbk5aEug==",
 			"dependencies": {
 				"classnames": "^2.5.1"
 			}
diff --git a/package.json b/package.json
index d06c710..0c72190 100644
--- a/package.json
+++ b/package.json
@@ -35,8 +35,8 @@
 		"@hotwired/turbo": "^8.0.2",
 		"@koa/router": "^12.0.1",
 		"@playwright/test": "^1.36.1",
-		"@sealcode/jdd": "^0.2.14",
-		"@sealcode/sealgen": "^0.12.8",
+		"@sealcode/jdd": "^0.2.16",
+		"@sealcode/sealgen": "^0.12.9",
 		"@sealcode/ts-predicates": "^0.4.3",
 		"@types/kill-port": "^2.0.0",
 		"get-port": "^7.0.0",
@@ -47,7 +47,7 @@
 		"object-path": "^0.11.8",
 		"sealious": "^0.17.48",
 		"stimulus": "^2.0.0",
-		"tempstream": "^0.3.3",
+		"tempstream": "^0.3.5",
 		"vitest": "^1.1.0"
 	},
 	"devDependencies": {
diff --git a/src/back/routes/components.sreact.tsx b/src/back/routes/components.sreact.tsx
index ccc01a8..3cf2266 100644
--- a/src/back/routes/components.sreact.tsx
+++ b/src/back/routes/components.sreact.tsx
@@ -164,7 +164,7 @@ export default new (class ComponentsPage extends StatefulPage<State, typeof acti
 		return (
 			<div>
 				<label>
-					{arg_path.at(-1)}
+					{arg_path.at(-1) || ""}
 					<select
 						name={`$.args${this.printArgPath(arg_path)}`}
 						onchange={this.rerender()}
@@ -208,7 +208,7 @@ export default new (class ComponentsPage extends StatefulPage<State, typeof acti
 		return (
 			<div>
 				<label>
-					{arg_path.at(-1)}
+					{arg_path.at(-1) || ""}
 					{arg.getTypeName() == "markdown" ? (
 						<textarea
 							name={`$.args${this.printArgPath(arg_path)}`}