.eslintrc.json

{
    "parser": "@typescript-eslint/parser",
    "env": {
        "browser": true,
        "es6": true,
        "jest/globals": true
    },
    "extends": [
      "plugin:@typescript-eslint/recommended",
      "plugin:@typescript-eslint/recommended-requiring-type-checking",
      "airbnb", 
      "prettier/@typescript-eslint",
      "plugin:prettier/recommended", 
      "prettier/react",
      "plugin:functional/external-recommended",
      "plugin:functional/no-object-orientation"
    ],
    "globals": {
        "Atomics": "readonly",
        "SharedArrayBuffer": "readonly"
    },
    "parserOptions": {
        "ecmaFeatures": {
            "jsx": true
        },
        "ecmaVersion": 2018,
        "sourceType": "module",
        "project": "./tsconfig.json"
    },
    "plugins": [
        "@typescript-eslint",
        "prettier",
        "react",
        "jest",
        "functional"
    ],
    "settings": { 
      "import/resolver": { 
        "node": { 
          "extensions": [
            ".js", 
            ".jsx",
            ".ts", 
            ".tsx"
          ] 
        } 
      } 
    },
    "rules": {
        "react/jsx-filename-extension": [1, { "extensions": [".js", ".jsx", ".ts", "tsx"] }],
        "react/prop-types": 0,
        "@typescript-eslint/camelcase": 0,
        "@typescript-eslint/no-explicit-any": 2,
        "@typescript-eslint/explicit-function-return-type": [1, { "allowExpressions": true }],
        "import/no-extraneous-dependencies": ["error", {"devDependencies": ["**/*.test.ts", "**/*.test.tsx", "**/*.test.js", "**/test_utils.tsx", "**/testutils/**"]}],
        "functional/no-mixed-type": 0,
        "import/prefer-default-export": 0,
        "import/extensions": 0,
        "no-undef": 0,
        "no-use-before-define": "off",
        "no-unused-vars": 0,
        "@typescript-eslint/no-unused-vars": 1,
        "@typescript-eslint/no-use-before-define": ["error"],
        "react/require-default-props": 0
    }
}