Fix JS linting errors

pnpm-lock.yaml

@@ -7,6 +7,10 @@ settings:
 importers:
 
   .:
+    dependencies:
+      ember-lifeline:
+        specifier: ^7.0.0
+        version: 7.0.0(@ember/test-helpers@5.4.1(@babel/core@7.28.6))
     devDependencies:
       '@babel/core':
         specifier: ^7.28.5
@@ -2254,6 +2258,15 @@ packages:
       '@typescript-eslint/parser':
         optional: true
 
+  ember-lifeline@7.0.0:
+    resolution: {integrity: sha512-2l51NzgH5vjN972zgbs+32rnXnnEFKB7qsSpJF+lBI4V5TG6DMy4SfowC72ZEuAtS58OVfwITbOO+RnM21EdpA==}
+    engines: {node: 16.* || >= 18}
+    peerDependencies:
+      '@ember/test-helpers': '>= 1.0.0'
+    peerDependenciesMeta:
+      '@ember/test-helpers':
+        optional: true
+
   ember-modifier@4.2.2:
     resolution: {integrity: sha512-pPYBAGyczX0hedGWQFQOEiL9s45KS9efKxJxUQkMLjQyh+1Uef1mcmAGsdw2KmvNupITkE/nXxmVO1kZ9tt3ag==}
 
@@ -6762,6 +6775,14 @@ snapshots:
       - eslint
       - typescript
 
+  ember-lifeline@7.0.0(@ember/test-helpers@5.4.1(@babel/core@7.28.6)):
+    dependencies:
+      '@embroider/addon-shim': 1.10.2
+    optionalDependencies:
+      '@ember/test-helpers': 5.4.1(@babel/core@7.28.6)
+    transitivePeerDependencies:
+      - supports-color
+
   ember-modifier@4.2.2(@babel/core@7.28.6):
     dependencies:
       '@embroider/addon-shim': 1.10.2