Updated eslint prettier and other files

eslint.config.mjs

@@ -1,8 +1,44 @@
-import globals from "globals";
-import pluginJs from "@eslint/js";
-
-
-export default [
-  {languageOptions: { globals: {...globals.browser, ...globals.node} }},
-  pluginJs.configs.recommended,
-];
+// .eslintrc.mjs
+export default {
+  env: {
+    browser: true,
+    es2021: true,
+  },
+  extends: [
+    'eslint:recommended',
+    'plugin:import/errors',
+    'plugin:import/warnings',
+  ],
+  parserOptions: {
+    ecmaVersion: 12,
+    sourceType: 'module',
+  },
+  rules: {
+    'no-undef': 'error',
+    'no-unused-vars': 'error',
+    'no-console': 'warn',
+    'no-unreachable': 'error',
+    'no-constant-condition': 'warn',
+    'no-debugger': 'warn',
+    'no-dupe-keys': 'error',
+    'no-duplicate-case': 'error',
+    'no-empty': 'error',
+    'no-extra-semi': 'error',
+    'no-irregular-whitespace': 'error',
+    'no-unexpected-multiline': 'error',
+    'curly': 'error',
+    'eqeqeq': 'error',
+    'no-else-return': 'error',
+    'no-multi-spaces': 'error',
+    'no-with': 'error',
+    'indent': ['error', 2],
+    'linebreak-style': ['error', 'unix'],
+    'quotes': ['error', 'single'],
+    'semi': ['error', 'always'],
+    'comma-dangle': ['error', 'always-multiline'],
+    'max-len': ['error', { code: 80 }],
+    'no-trailing-spaces': 'error',
+    'eol-last': ['error', 'always'],
+    'no-multiple-empty-lines': ['error', { max: 1, maxEOF: 0 }],
+  },
+};