diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 0000000..d912d46
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,13 @@
+{
+  "env": {
+    "browser": false,
+    "commonjs": true,
+    "es2021": true,
+    "node": true
+  },
+  "extends": "eslint:recommended",
+  "parserOptions": {
+    "ecmaVersion": 12
+  },
+  "rules": {}
+}
diff --git a/lib/util.js b/lib/util.js
index a4743ee..205e574 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -757,7 +757,7 @@ function decodePiCpuinfo(lines) {
   const serial = getValue(lines, 'serial', ':', true);
 
   let result = {};
-  if (oldRevisionCodes.hasOwnProperty(revisionCode)) {
+  if ({}.hasOwnProperty.call(oldRevisionCodes, revisionCode)) {
     // old revision codes
     result = {
       model,
@@ -787,7 +787,7 @@ function decodePiCpuinfo(lines) {
       memory: 256 * Math.pow(2, memSizeCode),
       manufacturer,
       processor,
-      type: typeList.hasOwnProperty(typeCode) ? typeList[typeCode] : '',
+      type: {}.hasOwnProperty.call(typeList, typeCode) ? typeList[typeCode] : '',
       revision: '1.' + revision.substr(7, 1),
     }
   }