.eslintrc.json

{
  // Configuration for JavaScript files
  "env": {
    "browser": true,
    "es2021": true
  },
  "extends": ["airbnb", "airbnb-typescript", "prettier", "next/core-web-vitals"],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 12,
    "sourceType": "module",
    "project": ["tsconfig.json"]
  },
  "ignorePatterns": ["*.config.js", "*.json"],
  "rules": {
    "no-console": "off", // disable once logging is set up
    "no-underscore-dangle": 0,
    "linebreak-style": 0,
    "no-shadow": "off",
    "no-param-reassign": "off",
    "import/prefer-default-export": "off", // Named export is easier to refactor automatically
    "@typescript-eslint/no-unused-vars": [
      "off",
      {
        "argsIgnorePattern": "^_",
        "varsIgnorePattern": "^_",
        "caughtErrorsIgnorePattern": "^_"
      }
    ],
    "no-unused-vars": [
      "off",
      {
        "argsIgnorePattern": "^_",
        "varsIgnorePattern": "^_",
        "caughtErrorsIgnorePattern": "^_"
      }
    ],
    "import/extensions": [
      "off",
      "always",
      {
        "pattern": {
          "js": "never",
          "jsx": "never",
          "ts": "never",
          "tsx": "never"
        }
      }
    ],
    "radix": "off",
    "no-plusplus": "off",
    "react/function-component-definition": [
      2,
      {
        "namedComponents": "arrow-function",
        "unnamedComponents": "arrow-function"
      }
    ],
    "react/jsx-no-constructed-context-values": "off"
  },
  "overrides": [
    // Configuration for TypeScript files
    {
      "files": ["**/*.ts", "**/*.tsx"],
      "plugins": ["@typescript-eslint", "unused-imports", "simple-import-sort"],
      "extends": [
        "airbnb-typescript",
        // "plugin:@typescript-eslint/recommended",
        // "plugin:@typescript-eslint/recommended-requiring-type-checking",
        "next/core-web-vitals",
        "prettier"
      ],
      "parserOptions": {
        "project": "./tsconfig.json"
      },
      "rules": {
        "no-console": "warn", // TODO: setup logging and remove this rule
        "react/destructuring-assignment": "off", // Vscode doesn't support automatically destructuring, it's a pain to add a new variable
        "jsx-a11y/anchor-is-valid": "off", // Next.js use his own internal link system
        "react/require-default-props": "off", // Allow non-defined react props as undefined
        "react/jsx-props-no-spreading": "off", // _app.tsx uses spread operator and also, react-hook-form
        "react-hooks/exhaustive-deps": "off", // Incorrectly report needed dependency with Next.js router
        "@next/next/no-img-element": "off", // We are currently not using next/image because it isn't supported with SSG mode
        "@typescript-eslint/comma-dangle": "off", // Avoid conflict rule between Eslint and Prettier
        "@typescript-eslint/consistent-type-imports": "error", // Ensure `import type` is used when it's necessary
        // Follow the same ordering as the official plugin `prettier-plugin-tailwindcss`
        "simple-import-sort/imports": "error", // Import configuration for `eslint-plugin-simple-import-sort`
        "simple-import-sort/exports": "error", // Export configuration for `eslint-plugin-simple-import-sort`
        "unused-imports/no-unused-imports": "error",
        "@typescript-eslint/no-shadow": "off",
        "@typescript-eslint/no-unused-vars": [
          "off",
          {
            "argsIgnorePattern": "^_",
            "varsIgnorePattern": "^_",
            "caughtErrorsIgnorePattern": "^_"
          }
        ],
        "no-unused-vars": [
          "off",
          {
            "argsIgnorePattern": "^_",
            "varsIgnorePattern": "^_",
            "caughtErrorsIgnorePattern": "^_"
          }
        ],
        "import/extensions": [
          "off",
          "always",
          {
            "pattern": {
              "jsx": "never",
              "ts": "never",
              "tsx": "never"
            }
          }
        ]
      }
    },
    // Configuration for testing
    {
      "files": ["**/*.test.ts", "**/*.test.tsx"],
      "plugins": ["jest", "jest-formatting", "testing-library", "jest-dom"],
      "extends": [
        "plugin:jest/recommended",
        "plugin:jest-formatting/recommended",
        "plugin:testing-library/react",
        "plugin:jest-dom/recommended"
      ]
    }
  ],
  "settings": {
    "import/resolver": {
      "typescript": {
        "alwaysTryTypes": true
      }
    }
  }
}