diff --git a/eslint.config.js b/eslint.config.js
index 5e6b472..332a882 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -3,21 +3,31 @@ import globals from 'globals'
 import reactHooks from 'eslint-plugin-react-hooks'
 import reactRefresh from 'eslint-plugin-react-refresh'
 import tseslint from 'typescript-eslint'
-import { defineConfig, globalIgnores } from 'eslint/config'
 
-export default defineConfig([
-  globalIgnores(['dist']),
+export default tseslint.config(
+  {
+    ignores: ['dist'],
+  },
   {
-    files: ['**/*.{ts,tsx}'],
     extends: [
       js.configs.recommended,
       tseslint.configs.recommended,
-      reactHooks.configs.flat.recommended,
-      reactRefresh.configs.vite,
     ],
+    files: ['**/*.{ts,tsx}'],
     languageOptions: {
       ecmaVersion: 2020,
       globals: globals.browser,
     },
+    plugins: {
+      'react-hooks': reactHooks,
+      'react-refresh': reactRefresh,
+    },
+    rules: {
+      ...reactHooks.configs.recommended.rules,
+      'react-refresh/only-export-components': [
+        'warn',
+        { allowConstantExport: true },
+      ],
+    },
   },
-])
+)
diff --git a/src/builders/EnvBuilder.ts b/src/builders/EnvBuilder.ts
index 3bb1efe..98068be 100644
--- a/src/builders/EnvBuilder.ts
+++ b/src/builders/EnvBuilder.ts
@@ -34,7 +34,7 @@ export class EnvBuilder implements IBuilder<Env> {
 
     private params(): this {
         const tag = `<parameter name="{name}" value="{val}" />`;
-        for (let p of this.src.params) {
+        for (const p of this.src.params) {
             this.stack.push(this.ident);
             this.stack.push(tag
                 .replace("{name}", p.name ?? "!ERR!")
diff --git a/src/builders/index.ts b/src/builders/index.ts
index 166618d..351090e 100644
--- a/src/builders/index.ts
+++ b/src/builders/index.ts
@@ -11,7 +11,7 @@ export interface IBuilder<T> {
 
 export class Builder {
     public static getEnv(env: Env): IBuilder<Env> {
-        let b = new EnvBuilder();
+        const b = new EnvBuilder();
         b.src = env;
         return b;
     };
diff --git a/src/components/ui/Button.tsx b/src/components/ui/Button.tsx
index c968482..0f2b4d1 100644
--- a/src/components/ui/Button.tsx
+++ b/src/components/ui/Button.tsx
@@ -8,7 +8,6 @@ interface ButtonProps extends ButtonHTMLAttributes<HTMLButtonElement> {
   variant?: ButtonVariant;
   size?: ButtonSize;
   icon?: LucideIcon;
-  iconPosition?: 'left' | 'right';
   isLoading?: boolean;
 }
 
@@ -33,7 +32,6 @@ export const Button = forwardRef<HTMLButtonElement, ButtonProps>(
       variant = 'primary',
       size = 'md',
       icon: Icon,
-      iconPosition = 'left',
       isLoading = false,
       disabled,
       children,
diff --git a/src/components/ui/Card.tsx b/src/components/ui/Card.tsx
index 9d4b9a3..911f413 100644
--- a/src/components/ui/Card.tsx
+++ b/src/components/ui/Card.tsx
@@ -34,7 +34,7 @@ export const Card = forwardRef<HTMLDivElement, CardProps>(
 
 Card.displayName = 'Card';
 
-interface CardHeaderProps extends HTMLAttributes<HTMLDivElement> {}
+type CardHeaderProps = HTMLAttributes<HTMLDivElement>;
 
 export const CardHeader = forwardRef<HTMLDivElement, CardHeaderProps>(
   ({ className = '', children, ...props }, ref) => {
@@ -52,7 +52,7 @@ export const CardHeader = forwardRef<HTMLDivElement, CardHeaderProps>(
 
 CardHeader.displayName = 'CardHeader';
 
-interface CardBodyProps extends HTMLAttributes<HTMLDivElement> {}
+type CardBodyProps = HTMLAttributes<HTMLDivElement>;
 
 export const CardBody = forwardRef<HTMLDivElement, CardBodyProps>(
   ({ className = '', children, ...props }, ref) => {
@@ -66,7 +66,7 @@ export const CardBody = forwardRef<HTMLDivElement, CardBodyProps>(
 
 CardBody.displayName = 'CardBody';
 
-interface CardFooterProps extends HTMLAttributes<HTMLDivElement> {}
+type CardFooterProps = HTMLAttributes<HTMLDivElement>;
 
 export const CardFooter = forwardRef<HTMLDivElement, CardFooterProps>(
   ({ className = '', children, ...props }, ref) => {
diff --git a/src/models/Config.tsx b/src/models/Config.tsx
index e17991d..407c824 100644
--- a/src/models/Config.tsx
+++ b/src/models/Config.tsx
@@ -97,7 +97,7 @@ export class Config {
    * Updates template by adding placeholders for environment params
    */
   public updateTemplateFromEnv(env: Env): void {
-    let templateObj: Record<string, any> = {};
+    let templateObj: Record<string, string> = {};
 
     // Try to parse existing template
     try {
diff --git a/src/test/ConfigReader.test.ts b/src/test/ConfigReader.test.ts
index ec782db..c1774c9 100644
--- a/src/test/ConfigReader.test.ts
+++ b/src/test/ConfigReader.test.ts
@@ -36,8 +36,8 @@ const cfgTemplate = `
 
 
 test("read from a file", async ({expect})=>{
-    let sut = new ConfigReader();
-    let file = new File([cfgTemplate],'cfg.json.xml',{type:'application/xml'});
+    const sut = new ConfigReader();
+    const file = new File([cfgTemplate],'cfg.json.xml',{type:'application/xml'});
     
     // define a missing jsdom text() function,
     // that presents in the real DOM 
@@ -46,15 +46,15 @@ test("read from a file", async ({expect})=>{
         writable: true
     });    
     
-    let cfg = await sut.parseFromFile(file);
+    const cfg = await sut.parseFromFile(file);
 
     expect(cfg).not.toBeUndefined();    
 });
 
 test("load environments and params", ({expect})=>{
-    let sut = new ConfigReader();
+    const sut = new ConfigReader();
 
-    let cfg = sut.parseFromString(cfgTemplate);
+    const cfg = sut.parseFromString(cfgTemplate);
 
     expect(cfg?.envs).toHaveLength(3);
     expect(cfg?.envs.map(x=>x.name))
@@ -64,9 +64,9 @@ test("load environments and params", ({expect})=>{
 });
 
 test("load template", ({expect})=>{
-    let sut = new ConfigReader();
+    const sut = new ConfigReader();
 
-    let cfg = sut.parseFromString(cfgTemplate);
+    const cfg = sut.parseFromString(cfgTemplate);
 
     expect(cfg?.template).toBeDefined();
     expect(cfg?.template.content.length).toBeGreaterThan(20);