diff --git a/lib/utils.js b/lib/utils.js
index c9a4d96..f6140a2 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -8,8 +8,14 @@ import fs from "fs";
 
 const dirTree = require("directory-tree");
 
-export class Util {
-  _counter = 0;
+class Util {
+  _counter;
+  cachedSlugMap;
+
+  constructor() {
+    this._counter = 0;
+    this.cachedSlugMap = this.getSlugHashMap();
+  }
 
   getContent(slug) {
     let currentFilePath = toFilePath(slug)
@@ -54,7 +60,6 @@ export class Util {
   }
 
   toFilePath(slug) {
-    const cachedSlugMap = getSlugHashMap()
     return cachedSlugMap[slug]
   }
 
@@ -263,3 +268,4 @@ export class Util {
   }
 }
 
+export default new Util()