Add more strict ESLint rules, resolve linting errors and cleanup

.env.example

@@ -1,9 +1,2 @@
-ACCESS_TOKEN_DURATION=
-JWT_SECRET_KEY=
-# Linux: `openssl rand -hex 32` or go to https://generate-secret.now.sh/32
-
-TON_API_KEY=
-# @tonapi_bot
-
-MONGODB_URI=
 RECOIL_DUPLICATE_ATOM_KEY_CHECKING_ENABLED=false
+NEXT_PUBLIC_DISABLE_WEBCONTAINER=false

.eslintrc.cjs

@@ -0,0 +1,99 @@
+/* eslint-env node */
+module.exports = {
+  extends: [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "next/core-web-vitals",
+    "prettier",
+  ],
+  parser: "@typescript-eslint/parser",
+  parserOptions: {
+    sourceType: "module",
+    ecmaVersion: 2020,
+    project: "./tsconfig.json",
+  },
+  ignorePatterns: ["*.cjs"],
+  plugins: ["@typescript-eslint"],
+  root: true,
+  env: {
+    node: true,
+    es2021: true,
+  },
+  rules: {
+    "@typescript-eslint/no-unused-vars": [
+      "error",
+      {
+        argsIgnorePattern: "^_",
+        varsIgnorePattern: "^_",
+        caughtErrorsIgnorePattern: "^_",
+      },
+    ],
+    "@typescript-eslint/no-var-requires": [
+      "error",
+      {
+        allow: ["/package\\.json$"],
+      },
+    ],
+    "@typescript-eslint/no-duplicate-type-constituents": "error",
+    "@typescript-eslint/restrict-plus-operands": "error",
+    "@typescript-eslint/no-base-to-string": "error",
+    "@typescript-eslint/restrict-template-expressions": "error",
+    "@typescript-eslint/no-useless-template-literals": "error",
+    "@typescript-eslint/no-unnecessary-boolean-literal-compare": "error",
+    "@typescript-eslint/no-unnecessary-condition": "error",
+    "@typescript-eslint/switch-exhaustiveness-check": "error",
+    "@typescript-eslint/adjacent-overload-signatures": "error",
+    "@typescript-eslint/array-type": "error",
+    "@typescript-eslint/ban-ts-comment": "error",
+    "@typescript-eslint/ban-types": "error",
+    "@typescript-eslint/consistent-generic-constructors": [
+      "error",
+      "type-annotation",
+    ],
+    "@typescript-eslint/consistent-indexed-object-style": "error",
+    "@typescript-eslint/consistent-type-assertions": "error",
+    "@typescript-eslint/no-array-delete": "error",
+    "@typescript-eslint/no-confusing-non-null-assertion": "error",
+    "@typescript-eslint/no-confusing-void-expression": "error",
+    "@typescript-eslint/no-duplicate-enum-values": "error",
+    "@typescript-eslint/no-duplicate-type-constituents": "error",
+    "@typescript-eslint/no-dynamic-delete": "error",
+    "@typescript-eslint/no-explicit-any": "error",
+    "@typescript-eslint/no-extra-non-null-assertion": "error",
+    "@typescript-eslint/no-extraneous-class": "error",
+    "@typescript-eslint/no-floating-promises": "error",
+    "@typescript-eslint/no-for-in-array": "error",
+    "no-implied-eval": "off",
+    "@typescript-eslint/no-implied-eval": "error",
+    "@typescript-eslint/no-import-type-side-effects": "error",
+    "@typescript-eslint/no-invalid-void-type": "error",
+    "no-loss-of-precision": "off",
+    "@typescript-eslint/no-loss-of-precision": "error",
+    "@typescript-eslint/no-meaningless-void-operator": "error",
+    "@typescript-eslint/no-misused-new": "error",
+    "@typescript-eslint/no-misused-promises": "error",
+    "@typescript-eslint/no-mixed-enums": "error",
+    "@typescript-eslint/no-namespace": "error",
+    "@typescript-eslint/no-non-null-asserted-nullish-coalescing": "error",
+    "@typescript-eslint/no-non-null-asserted-optional-chain": "error",
+    "@typescript-eslint/no-redundant-type-constituents": "error",
+    "@typescript-eslint/no-this-alias": "error",
+    "no-throw-literal": "off",
+    "@typescript-eslint/only-throw-error": "error",
+    "@typescript-eslint/no-unnecessary-qualifier": "error",
+    "@typescript-eslint/no-unsafe-unary-minus": "error",
+    "no-unused-expressions": "off",
+    "@typescript-eslint/no-unused-expressions": "error",
+    "@typescript-eslint/prefer-for-of": "error",
+    "@typescript-eslint/prefer-function-type": "error",
+    "@typescript-eslint/prefer-includes": "error",
+    "@typescript-eslint/prefer-literal-enum-member": "error",
+    "@typescript-eslint/prefer-nullish-coalescing": "error",
+    "@typescript-eslint/prefer-optional-chain": "error",
+    "@typescript-eslint/prefer-string-starts-ends-with": "error",
+    "require-await": "off",
+    "@typescript-eslint/require-await": "error",
+    "@typescript-eslint/unified-signatures": "error",
+    "react-hooks/exhaustive-deps": "off",
+  },
+};

.github/workflows/main.yml

@@ -25,8 +25,10 @@ jobs:
       - name: Install dependencies
         run: npm install
 
-      - name: Run Prettier check
+      - name: "Prettier: Validate code formatting"
         run: npm run format:check
+      - name: "ESLint: Validate code for errors"
+        run: npm run lint
 
   deploy:
     runs-on: ubuntu-latest