Add more config. Add more package.json. Add eslint and prettier config.

.eslintignore

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+dist/
+node_modules/
+client/

.eslintrc.js

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+module.exports = {
+  env: {
+    browser: true,
+    es2021: true,
+    node: true,
+  },
+  extends: [
+    'eslint:recommended',
+    'plugin:react/recommended',
+    'plugin:@typescript-eslint/recommended',
+  ],
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    ecmaFeatures: {
+      jsx: true,
+    },
+    ecmaVersion: 12,
+    sourceType: 'module',
+  },
+  plugins: ['react', '@typescript-eslint'],
+  rules: {
+    '@typescript-eslint/no-var-requires': 0,
+    quotes: [2, 'single', { avoidEscape: true }],
+  },
+}

.eslintrc.json

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+{
+    "root": true,
+    "env": {
+      "node": true,
+      "browser": true
+    },
+    "extends": [
+      "eslint:recommended",
+      "plugin:@typescript-eslint/eslint-recommended",
+      "plugin:@typescript-eslint/recommended",
+      "plugin:@typescript-eslint/recommended-requiring-type-checking",
+      "prettier",
+      "prettier/@typescript-eslint"
+    ],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+      "ecmaVersion": 2020,
+      "parser": "babel-eslint",
+      "project": "./tsconfig.json",
+      "sourceType": "module"
+    },
+    "plugins": [
+      "@typescript-eslint",
+      "prettier"
+    ],
+    "rules": {
+      "no-console": 0,
+      "semi": 0,
+      "@typescript-eslint/no-explicit-any": 0,
+      "quotes": [2, "single", { "avoidEscape": true }]
+    }
+  }
+

.prettierrc

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+{
+"trailingComma": "es5",
+"tabWidth": 2,
+"semi": false,
+"singleQuote": true
+}