diff --git a/.build/types.ts b/.build/types.ts
index d9f10d21a..419240782 100644
--- a/.build/types.ts
+++ b/.build/types.ts
@@ -8,6 +8,8 @@ const buildType = (packageName: string) => {
     out.length > 0 && console.log(out.toString());
   } catch (e) {
     console.error(e);
+    e.stdout.length > 0 && console.error(e.stdout.toString());
+    e.stderr.length > 0 && console.error(e.stderr.toString());
   }
 };
 
diff --git a/.esbuild/util.ts b/.esbuild/util.ts
index 1efe3bc90..5c21cbf45 100644
--- a/.esbuild/util.ts
+++ b/.esbuild/util.ts
@@ -65,6 +65,9 @@ export const getBuildConfig = (options: MermaidBuildOptions): BuildOptions => {
     minify,
     logLevel: 'info',
     chunkNames: `chunks/${outFileName}/[name]-[hash]`,
+    define: {
+      'import.meta.vitest': 'undefined',
+    },
   });
 
   if (core) {
diff --git a/packages/mermaid-flowchart-elk/tsconfig.json b/packages/mermaid-flowchart-elk/tsconfig.json
index e7ca78fe4..5a41d0603 100644
--- a/packages/mermaid-flowchart-elk/tsconfig.json
+++ b/packages/mermaid-flowchart-elk/tsconfig.json
@@ -2,7 +2,8 @@
   "extends": "../../tsconfig.json",
   "compilerOptions": {
     "rootDir": "../..",
-    "outDir": "./dist"
+    "outDir": "./dist",
+    "types": ["vitest/importMeta", "vitest/globals"]
   },
   "include": ["./src/**/*.ts"],
   "typeRoots": ["./src/types"]