PR-227028: update dependencies, migrate to TypeScript 6 and ESLint flat config

- Bump all dependencies to latest (React 19.2.7, Storybook 10.4.3, Webpack
  5.107.2 + webpack-cli 7, Jest 30.4.2, Cypress 15.17.0, Babel 7.29.7,
  sass-loader 17, css-minimizer-webpack-plugin 8, eslint-webpack-plugin 6).
- Migrate TypeScript 5.9 -> 6.0.3: set tsconfig rootDir, add
  ignoreDeprecations "6.0", scope include to src/components + src/@types, and
  declare *.scss/*.sass/*.css modules for stricter side-effect imports.
- Switch @babel/preset-react to the automatic JSX runtime and drop redundant
  React imports in stories and tests.
- Migrate ESLint from the deprecated .eslintrc.js to flat config
  (eslint.config.mjs) using typescript-eslint, @eslint/js, globals and the
  React/Storybook plugins. Keep ESLint at v9 because eslint-plugin-react does
  not support v10 yet. This fixes the previously broken lint (missing
  @typescript-eslint parser/plugin) and normalizes formatting.
- Fix a latent bug in .storybook/main.js (comma instead of semicolon joining
  two assignments via the comma operator).
- npm audit fix: 0 vulnerabilities.
- Bump package version to 1.4.0.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@aleleba/create-react-component-library",
-  "version": "1.3.2",
+  "version": "1.4.0",
   "description": "A starter kit for create a React component Library with storybook",
   "bin": "./bin/cli.js",
   "main": "dist/index.js",
@@ -16,8 +16,8 @@
   "scripts": {
     "start": "npm run storybook",
     "build": "webpack",
-    "lint": "eslint ./ --ext .js --ext .ts --ext .jsx --ext .tsx",
-    "lint:fix": "eslint ./ --ext .js --ext .ts --ext .jsx --ext .tsx --fix",
+    "lint": "eslint .",
+    "lint:fix": "eslint . --fix",
     "test": "jest",
     "test:watch": "jest --watch",
     "storybook": "storybook dev -p 3000",
@@ -44,59 +44,62 @@
   },
   "homepage": "https://github.com/aleleba/create-react-component-library#readme",
   "devDependencies": {
-    "@babel/core": "^7.28.6",
-    "@babel/preset-env": "^7.28.6",
-    "@babel/preset-react": "^7.28.5",
-    "@babel/preset-typescript": "^7.28.5",
-    "@babel/register": "^7.28.6",
+    "@babel/core": "^7.29.7",
+    "@babel/preset-env": "^7.29.7",
+    "@babel/preset-react": "^7.29.7",
+    "@babel/preset-typescript": "^7.29.7",
+    "@babel/register": "^7.29.7",
+    "@eslint/js": "^9.39.4",
     "@mdx-js/react": "^3.1.1",
-    "@storybook/addon-docs": "^10.2.1",
-    "@storybook/addon-links": "^10.2.1",
-    "@storybook/addon-styling-webpack": "^3.0.0",
-    "@storybook/addon-webpack5-compiler-babel": "^4.0.0",
-    "@storybook/cli": "^10.2.1",
+    "@storybook/addon-docs": "^10.4.3",
+    "@storybook/addon-links": "^10.4.3",
+    "@storybook/addon-styling-webpack": "^3.0.2",
+    "@storybook/addon-webpack5-compiler-babel": "^4.0.1",
+    "@storybook/cli": "^10.4.3",
     "@storybook/preset-scss": "^1.0.3",
-    "@storybook/react-webpack5": "^10.2.1",
+    "@storybook/react-webpack5": "^10.4.3",
     "@testing-library/dom": "^10.4.1",
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",
     "@testing-library/user-event": "^14.6.1",
     "@types/jest": "^30.0.0",
-    "@types/node": "^25.0.10",
-    "@types/react": "^19.2.10",
+    "@types/node": "^25.9.2",
+    "@types/react": "^19.2.17",
     "@types/react-dom": "^19.2.3",
     "@types/webpack": "^5.28.5",
-    "babel-loader": "^10.0.0",
+    "babel-loader": "^10.1.1",
     "clean-webpack-plugin": "^4.0.0",
-    "css-loader": "^7.1.3",
-    "css-minimizer-webpack-plugin": "^7.0.4",
-    "cypress": "^15.9.0",
-    "dotenv": "^17.2.3",
-    "eslint": "^9.39.2",
+    "css-loader": "^7.1.4",
+    "css-minimizer-webpack-plugin": "^8.0.0",
+    "cypress": "^15.17.0",
+    "dotenv": "^17.4.2",
+    "eslint": "^9.39.4",
     "eslint-plugin-react": "^7.37.5",
-    "eslint-plugin-storybook": "^10.2.1",
-    "eslint-webpack-plugin": "^5.0.2",
-    "html-webpack-plugin": "^5.6.6",
+    "eslint-plugin-storybook": "^10.4.3",
+    "eslint-webpack-plugin": "^6.0.0",
+    "globals": "^16.5.0",
+    "html-webpack-plugin": "^5.6.7",
     "identity-obj-proxy": "^3.0.0",
-    "jest": "^30.2.0",
-    "jest-environment-jsdom": "^30.2.0",
+    "jest": "^30.4.2",
+    "jest-environment-jsdom": "^30.4.1",
     "jest-fetch-mock": "^3.0.3",
-    "mini-css-extract-plugin": "^2.10.0",
-    "react": "^19.2.4",
-    "react-dom": "^19.2.4",
+    "mini-css-extract-plugin": "^2.10.2",
+    "react": "^19.2.7",
+    "react-dom": "^19.2.7",
     "resolve-ts-aliases": "^1.0.1",
-    "sass": "^1.97.3",
-    "sass-loader": "^16.0.6",
-    "storybook": "^10.2.1",
+    "sass": "^1.100.0",
+    "sass-loader": "^17.0.0",
+    "storybook": "^10.4.3",
     "style-loader": "^4.0.0",
-    "terser-webpack-plugin": "^5.3.16",
-    "ts-jest": "^29.4.6",
-    "ts-loader": "^9.5.4",
+    "terser-webpack-plugin": "^5.6.1",
+    "ts-jest": "^29.4.11",
+    "ts-loader": "^9.6.0",
     "tsconfig-paths-webpack-plugin": "^4.2.0",
-    "typescript": "^5.9.3",
+    "typescript": "^6.0.3",
+    "typescript-eslint": "^8.61.0",
     "url-loader": "^4.1.1",
-    "webpack": "^5.104.1",
-    "webpack-cli": "^6.0.1",
+    "webpack": "^5.107.2",
+    "webpack-cli": "^7.0.3",
     "webpack-node-externals": "^3.0.0"
   },
   "peerDependencies": {