.eslintrc.json

{
  "root": true,
  "parser": "@typescript-eslint/parser",
  "plugins": ["@typescript-eslint", "prettier", "import"],

  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 12,
    "sourceType": "module",
    // project: 'tsconfig.json',
    "tsconfigRootDir": "__dirname"
  },
  "env": {
    "node": true
  },
  "extends": [
    "plugin:@typescript-eslint/recommended",
    "plugin:prettier/recommended",
    "next/core-web-vitals"
  ],
  "rules": {
    // 'React' must be in scope when using JSX 에러 지우기(Next.js)
    "react/react-in-jsx-scope": "off",
    // ts파일에서 tsx구문 허용(Next.js)
    "react/jsx-filename-extension": [1, { "extensions": [".ts", ".tsx"] }],
    "import/order": [
      "error",
      {
        "groups": [
          "builtin",
          "external",
          "internal",
          ["parent", "sibling", "index"],
          "type",
          "unknown"
        ],
        "pathGroups": [
          { "pattern": "react", "group": "builtin", "position": "after" },
          {
            "pattern": "react-dom/client",
            "group": "builtin",
            "position": "after"
          }
        ],

        "pathGroupsExcludedImportTypes": [],
        "newlines-between": "always",
        "alphabetize": {
          "order": "asc",
          "caseInsensitive": true
        }
      }
    ]
  }
}