Add eslint config

.eslintrc.js

@@ -0,0 +1,30 @@
+module.exports = {
+  env: {
+    es6: true,
+    browser: true,
+  },
+  globals: {
+    process: "readonly",
+  },
+  parserOptions: {
+    sourceType: "module",
+    ecmaVersion: 8,
+    ecmaFeatures: {
+      jsx: true,
+    },
+  },
+  plugins: ["prettier"],
+  extends: ["eslint:recommended", "prettier", "plugin:prettier/recommended"],
+  rules: {
+    curly: ["warn", "multi-line", "consistent"],
+    "no-bitwise": "warn",
+    "no-console": "off",
+    "no-param-reassign": "warn",
+    "no-shadow": "warn",
+    "no-unused-vars": "warn",
+    "prefer-const": "warn",
+    radix: ["warn", "always"],
+    "spaced-comment": ["warn", "always"],
+  },
+  overrides: [],
+};

package.json

@@ -3,7 +3,9 @@
   "scripts": {
     "dev": "next dev",
     "build": "next build",
-    "start": "next start"
+    "start": "next start",
+    "lint": "eslint --max-warnings 0 \"./**/*.js\"",
+    "lint:fix": "eslint --max-warnings 0 \"./**/*.js\" --fix"
   },
   "dependencies": {
     "@cosmjs/amino": "^0.27.0",
@@ -21,5 +23,11 @@
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
     "uuid": "^8.3.0"
+  },
+  "devDependencies": {
+    "eslint": "^8.6.0",
+    "eslint-config-prettier": "^8.3.0",
+    "eslint-plugin-prettier": "^4.0.0",
+    "prettier": "^2.5.1"
   }
 }