.eslintrc.json

{
  "extends": [
    "next/core-web-vitals",
    "prettier",
    "plugin:import/recommended"
  ],
  "plugins": [
    "prettier",
    "@typescript-eslint",
    "unused-imports"
  ],
  "ignorePatterns": [
    "!app/**/*.{tsx,ts}"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": "./tsconfig.json"
  },
  "rules": {
    /* General Rules */
    // Prettier formatting must pass
    "prettier/prettier": "error",
    // Import order
    "import/order": [
      "error",
      {
        "pathGroups": [
          // Internal between external and relative
          {
            "pattern": "@/**",
            "group": "internal"
          },
          // Next as the second group
          {
            "pattern": "next/**",
            "group": "builtin",
            "position": "before"
          },
          // React in the first group
          {
            "pattern": "react",
            "group": "builtin",
            "position": "before"
          }
        ],
        "pathGroupsExcludedImportTypes": [
          "builtin"
        ],
        "newlines-between": "always",
        "groups": [
          "builtin",
          "external",
          "internal",
          "parent",
          "sibling"
        ],
        "alphabetize": {
          "order": "asc",
          "caseInsensitive": true
        }
      }
    ],
    // Unused imports
    "unused-imports/no-unused-imports": "warn",
    /* React Rules */
    // Components must have explicit types
    "react/prop-types": "warn",
    // Prefer self-closing components without children
    "react/self-closing-comp": "warn",
    // We don't need NextJS's Image element
    "@next/next/no-img-element": "off",
    // Consistency in component definition
    "react/function-component-definition": [
      "error",
      {
        "namedComponents": "function-declaration"
      }
    ],
    // Avoid rendering bugs in conditional rendering with &&
    "react/jsx-no-leaked-render": "error",
    // useState should be destructured
    "react/hook-use-state": "error"
  },
  "settings": {
    "react": {
      "version": "detect"
    }
  }
}