diff --git a/rsconcept/frontend/package.json b/rsconcept/frontend/package.json
index 73e8c5e3..97e31fca 100644
--- a/rsconcept/frontend/package.json
+++ b/rsconcept/frontend/package.json
@@ -67,6 +67,9 @@
     },
     "transformIgnorePatterns": [
       "node_modules/(?!variables/.*)"
-    ]
+    ],
+    "moduleNameMapper": {
+      "^@/(.*)$": "<rootDir>/src/$1"
+    }
   }
 }
diff --git a/rsconcept/frontend/src/components/RSInput/rslang/parser.test.ts b/rsconcept/frontend/src/components/RSInput/rslang/parser.test.ts
index 366c6396..6e9b8826 100644
--- a/rsconcept/frontend/src/components/RSInput/rslang/parser.test.ts
+++ b/rsconcept/frontend/src/components/RSInput/rslang/parser.test.ts
@@ -1,4 +1,5 @@
-import { printTree } from '../../../utils/codemirror';
+import { printTree } from '@/utils/codemirror';
+
 import { parser } from './parser';
 
 const testData = [
diff --git a/rsconcept/frontend/src/components/RefsInput/parse/parser.test.ts b/rsconcept/frontend/src/components/RefsInput/parse/parser.test.ts
index 26d19865..a873f382 100644
--- a/rsconcept/frontend/src/components/RefsInput/parse/parser.test.ts
+++ b/rsconcept/frontend/src/components/RefsInput/parse/parser.test.ts
@@ -1,4 +1,5 @@
-import { printTree } from '../../../utils/codemirror';
+import { printTree } from '@/utils/codemirror';
+
 import { parser } from './parser';
 
 const testData = [