.eslintrc.json

{
  "extends": [
    "eslint:recommended",
    "plugin:react/recommended",
    "plugin:prettier/recommended",
    "plugin:cypress/recommended",
    "plugin:import/recommended"
  ],
  "plugins": ["react", "prettier", "import", "no-only-tests"],
  "env": {
    "browser": true,
    "node": true,
    "es6": true
  },
  "overrides": [
    {
      "files": [
        "**/*.test.js",
        "**/*.test.jsx",
        "**/*.test.ts",
        "**/*.test.tsx"
      ],
      "env": {
        "jest": true
      },
      "plugins": ["jest"]
    },
    {
      "files": ["**/*.ts?(x)"],
      "extends": [
        "plugin:@typescript-eslint/recommended",
        "plugin:prettier/recommended",
        "plugin:import/typescript"
      ],
      "plugins": ["@typescript-eslint"],
      "rules": {
        "@typescript-eslint/explicit-module-boundary-types": 0,
        "@typescript-eslint/camelcase": 0,
        "@typescript-eslint/explicit-function-return-type": 0,
        "@typescript-eslint/no-explicit-any": 0,
        "@typescript-eslint/no-unused-vars": [
          "error",
          { "argsIgnorePattern": "^_" }
        ],
        "@typescript-eslint/naming-convention": [
          "error",
          {
            "selector": "interface",
            "format": ["PascalCase"],
            "custom": {
              "regex": "^I[A-Z]",
              "match": false
            }
          }
        ]
      }
    }
  ],
  "rules": {
    "prettier/prettier": ["error", { "singleQuote": true }],
    "react/display-name": 0,
    "react/prop-types": 0,
    "import/no-unresolved": "error",
    "import/order": "error",
    "no-only-tests/no-only-tests": "error",
    "no-use-before-define": "error"
  },
  "settings": {
    "react": {
      "pragma": "React",
      "version": "detect"
    },
    "import/parsers": {
      "@typescript-eslint/parser": [".ts", ".tsx"]
    },
    "import/resolver": {
      "typescript": {
        "alwaysTryTypes": true,
        "project": ["client/tsconfig.json", "server/tsconfig.json"]
      }
    }
  },
  "parser": "@typescript-eslint/parser"
}