[FSSDK-10440] Node engine 14 support restored

Author: junaed-optimizely

.eslintrc.js

@@ -0,0 +1,28 @@
+module.exports = {
+  parserOptions: {
+    ecmaFeatures: {
+      jsx: true,
+    },
+    ecmaVersion: 2015,
+    sourceType: 'module',
+  },
+  env: {
+    browser: true,
+    es6: true,
+    jest: true,
+    mocha: true,
+    node: true,
+  },
+  extends: [
+    'plugin:react-hooks/recommended',
+    'eslint:recommended',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:prettier/recommended',
+  ],
+  rules: {
+    '@typescript-eslint/ban-ts-ignore': 'off',
+    '@typescript-eslint/camelcase': 'off',
+    '@typescript-eslint/no-empty-function': 'off',
+    'no-shadow': 'error',
+  },
+};

eslint.config.mjs

@@ -43,35 +43,30 @@
     "react": ">=16.8.0"
   },
   "devDependencies": {
-    "@eslint/compat": "^1.1.1",
-    "@eslint/eslintrc": "^3.1.0",
-    "@eslint/js": "^9.8.0",
     "@rollup/plugin-commonjs": "^26.0.1",
     "@rollup/plugin-node-resolve": "^15.2.3",
     "@rollup/plugin-replace": "^5.0.7",
-    "@rollup/plugin-terser": "^0.4.4",
-    "@testing-library/dom": "^10.4.0",
+    "@rollup/plugin-terser": "0.4.2",
     "@testing-library/jest-dom": "^6.4.8",
-    "@testing-library/react": "^16.0.0",
+    "@testing-library/react": "^14.3.0",
     "@types/hoist-non-react-statics": "^3.3.5",
     "@types/jest": "^29.5.12",
     "@types/prop-types": "^15.7.12",
     "@types/react": "^18.3.3",
     "@types/react-dom": "^18.3.0",
-    "@typescript-eslint/eslint-plugin": "^7.18.0",
-    "@typescript-eslint/parser": "^7.18.0",
-    "eslint": "^9.8.0",
+    "@typescript-eslint/eslint-plugin": "^5.6.2",
+    "@typescript-eslint/parser": "^5.6.2",
+    "eslint": "^8.57.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-prettier": "^5.2.1",
     "eslint-plugin-react": "^7.35.0",
     "eslint-plugin-react-hooks": "^4.6.2",
-    "globals": "^15.8.0",
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.7.0",
     "prettier": "^3.3.3",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
-    "rollup": "^4.19.1",
+    "rollup": "^3.29.4",
     "rollup-plugin-typescript2": "^0.36.0",
     "ts-jest": "^29.2.3",
     "tslib": "^2.6.3",