.eslintrc.json

{
  "extends": "plugin:@next/next/recommended",
  "env": {
    "es6": true
  },
  "rules": {
    "semi": ["error", "never"],
    "quotes": ["error", "double", { "avoidEscape": true }],
    "comma-dangle": "off"
  },
  "overrides": [
    {
      "files": ["**/*.js"],
      "extends": ["airbnb", "prettier", "plugin:prettier/recommended"],
      "rules": {
        "@typescript-eslint/no-var-requires": "off",
        "curly": ["error", "all"],
        "no-useless-escape": "off",
        "import/no-import-module-exports": "off"
      }
    },
    {
      "files": ["**/*.ts", "**/*.tsx"],
      "extends": [
        "airbnb-typescript",
        "next",
        "plugin:@typescript-eslint/recommended",
        "plugin:jsx-a11y/recommended",
        "plugin:prettier/recommended"
      ],
      "parserOptions": {
        "ecmaVersion": 2020,
        "project": ["tsconfig.json", "cypress/tsconfig.json", "cypress/*.cy.tsx"]
      },
      "plugins": ["@typescript-eslint", "filenames", "no-only-tests"],
      "rules": {
        "curly": ["error", "all"],
        "no-console": "off",
        "no-plusplus": "off",
        "no-useless-escape": "off",
        "require-await": "off",
        "filenames/match-exported": "error",
        "import/first": "error",
        "import/no-cycle": "error",
        "import/no-anonymous-default-export": "off",
        "import/prefer-default-export": "off",
        "prettier/prettier": ["error"],
        "react/jsx-curly-brace-presence": ["error", { "props": "ignore", "children": "always" }],
        "react/require-default-props": ["off"],
        "@next/next/no-html-link-for-pages": "off",
        "@typescript-eslint/ban-ts-comment": "off",
        "@typescript-eslint/explicit-module-boundary-types": ["off"],
        "@typescript-eslint/naming-convention": [
          "warn",
          {
            "selector": "variableLike",
            "format": ["StrictPascalCase", "strictCamelCase", "UPPER_CASE"],
            "filter": {
              "regex": "^_+$",
              "match": false
            },
            "leadingUnderscore": "allow"
          }
        ],
        "@typescript-eslint/no-unused-vars": ["warn", { "argsIgnorePattern": "^_+$", "varsIgnorePattern": "^_+$" }],
        "no-only-tests/no-only-tests": [
          "error",
          {
            "block": ["test", "it", "assert"],
            "focus": ["only", "focus"]
          }
        ]
      }
    },
    {
      "files": ["**/_*.{ts,tsx}", "src/{emails,pages}/**/*.{ts,tsx}", "*.config.{js,ts}"],
      "rules": {
        "filenames/match-exported": "off",
        "import/no-extraneous-dependencies": "off"
      }
    },
    {
      "files": ["**/*.test.*"],
      "rules": {
        "@typescript-eslint/no-explicit-any": "off"
      }
    },
    {
      "files": ["**/*.stories.*"],
      "rules": {
        "import/no-extraneous-dependencies": "off",
        "import/prefer-default-export": "off",
        "@typescript-eslint/no-non-null-assertion": "off"
      }
    },
    {
      "files": ["cypress/**/*.ts", "cypress/**/*.tsx"],
      "extends": ["plugin:cypress/recommended"],
      "rules": {
        "no-console": "off",
        "no-unused-expressions": "off",
        "@typescript-eslint/naming-convention": "off",
        "no-unused-vars": "off",
        "@typescript-eslint/no-non-null-assertion": "off"
      }
    }
  ]
}