Fix

Author: NullVoxPopuli

broccoli/build-debug-macro-plugin.js

@@ -10,7 +10,7 @@ module.exports = function buildDebugMacrosPlugin(isDebug) {
       externalizeHelpers: {
         module: true,
       },
-      flags: [{ source: '@glimmer/env', flags: { import.meta.env?.DEV: isDebug } }],
+      flags: [{ source: '@glimmer/env', flags: { DEBUG: isDebug } }],
     },
   ];
 };

package.json

@@ -390,4 +390,4 @@
     }
   },
   "packageManager": "pnpm@10.5.0"
-}
+}

packages/@glimmer/env/index.ts

@@ -1,2 +1,2 @@
-export const import.meta.env?.DEV = false;
+export const DEBUG = false;
 export const CI = false;