diff --git a/gulp/babel-es6.config.js b/gulp/babel-es6.config.js
index 765cb1f3..b0bb02c4 100644
--- a/gulp/babel-es6.config.js
+++ b/gulp/babel-es6.config.js
@@ -14,6 +14,8 @@ module.exports = function (api) {
         ],
     ];
     const plugins = [
+        ["@babel/plugin-proposal-class-properties", { loose: true }],
+
         "closure-elimination",
         // var is faster than let and const!
         [
@@ -28,7 +30,6 @@ module.exports = function (api) {
                 loose: true,
             },
         ],
-        [require("@babel/plugin-proposal-class-properties"), { loose: true }],
     ];
     return {
         presets,
diff --git a/gulp/babel.config.js b/gulp/babel.config.js
index 924ad0a1..f8785737 100644
--- a/gulp/babel.config.js
+++ b/gulp/babel.config.js
@@ -14,6 +14,8 @@ module.exports = function (api) {
         ],
     ];
     const plugins = [
+        ["@babel/plugin-proposal-class-properties", { loose: true }],
+
         "closure-elimination",
         // var is faster than let and const!
         [
@@ -28,7 +30,6 @@ module.exports = function (api) {
                 loose: true,
             },
         ],
-        [require("@babel/plugin-proposal-class-properties"), { loose: true }],
     ];
     return {
         presets,
diff --git a/src/js/game/components/wire.js b/src/js/game/components/wire.js
index 931c5429..c3ed4141 100644
--- a/src/js/game/components/wire.js
+++ b/src/js/game/components/wire.js
@@ -1,4 +1,7 @@
+/* typehints:start */
 import { MetaWireBuilding } from "../buildings/wire";
+/* typehints:end */
+
 import { Component } from "../component";
 
 /** @enum {string} */