diff --git a/.eslintrc.json b/.eslintrc.json
index c0a9ebd76..7a71f65c5 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -36,8 +36,6 @@
         "properties": false
       }
     ],
-    // "no-eq-null": "off",
-    // "no-negated-condition": "off",
     "no-console": "error",
     "object-curly-spacing": [
       "error",
@@ -47,7 +45,6 @@
       "error",
       "after"
     ],
-    // "prefer-object-spread": "off",
     "semi": [
       "error",
       "never"
@@ -88,6 +85,17 @@
             "SwitchCase": 1
           }
         ],
+        "@typescript-eslint/naming-convention": [
+          "error",
+          {
+            "selector": "variable",
+            "format": ["camelCase", "StrictPascalCase", "UPPER_CASE"]
+          }
+        ],
+        "@typescript-eslint/object-curly-spacing": [
+          "error",
+          "always"
+        ],
         "@typescript-eslint/semi": [
           "error",
           "never"
diff --git a/src/ts/card-widget.ts b/src/ts/card-widget.ts
index 4c6b80dc7..de74a15d2 100644
--- a/src/ts/card-widget.ts
+++ b/src/ts/card-widget.ts
@@ -65,7 +65,7 @@ class CardWidget {
       this._parent = element
     }
 
-    this._config = {...Default, ...config}
+    this._config = { ...Default, ...config }
   }
 
   collapse() {
diff --git a/src/ts/layout.ts b/src/ts/layout.ts
index 375380794..61803cf30 100644
--- a/src/ts/layout.ts
+++ b/src/ts/layout.ts
@@ -15,7 +15,7 @@ import {
  * ------------------------------------------------------------------------
  */
 
-const CLASS_NAME_HOLD_TRANSITIONs = 'hold-transition'
+const CLASS_NAME_HOLD_TRANSITIONS = 'hold-transition'
 
 const SELECTOR_SIDEBAR = '.sidebar'
 
@@ -40,16 +40,16 @@ class Layout {
 
   constructor(element: HTMLElement, config: Config) {
     this._element = element
-    this._config = {...Default, ...config}
+    this._config = { ...Default, ...config }
   }
 
   holdTransition(): void {
     let resizeTimer: number | undefined
     window.addEventListener('resize', () => {
-      document.body.classList.add(CLASS_NAME_HOLD_TRANSITIONs)
+      document.body.classList.add(CLASS_NAME_HOLD_TRANSITIONS)
       clearTimeout(resizeTimer)
       resizeTimer = setTimeout(() => {
-        document.body.classList.remove(CLASS_NAME_HOLD_TRANSITIONs)
+        document.body.classList.remove(CLASS_NAME_HOLD_TRANSITIONS)
       }, 400)
     })
   }
diff --git a/src/ts/treeview.ts b/src/ts/treeview.ts
index 7cfde0b7f..7b5512252 100644
--- a/src/ts/treeview.ts
+++ b/src/ts/treeview.ts
@@ -56,7 +56,7 @@ class Treeview {
     this._navItem = this._element?.closest(SELECTOR_NAV_ITEM)
     this._childNavItem = this._navItem?.querySelector(SELECTOR_TREEVIEW_MENU)
 
-    this._config = {...Default, ...config}
+    this._config = { ...Default, ...config }
   }
 
   open(): void {
diff --git a/src/ts/util/index.ts b/src/ts/util/index.ts
index 9e8755abe..6bc559475 100644
--- a/src/ts/util/index.ts
+++ b/src/ts/util/index.ts
@@ -46,7 +46,7 @@ const slideUp = (target: HTMLElement, duration = 500) => {
 /* SLIDE DOWN */
 const slideDown = (target: HTMLElement, duration = 500) => {
   target.style.removeProperty('display')
-  let {display} = window.getComputedStyle(target)
+  let { display } = window.getComputedStyle(target)
 
   if (display === 'none') {
     display = 'block'