.eslintrc.json

{
    "env": {
        "es6": true,
        "node": true
    },
    "extends": [
        "plugin:react/recommended",
        "airbnb",
        "eslint:recommended",
        "plugin:@typescript-eslint/eslint-recommended",
        "plugin:@typescript-eslint/recommended"
    ],
    "globals": {
        "Atomics": "readonly",
        "SharedArrayBuffer": "readonly"
    },
    "parser": "@typescript-eslint/parser",
    "parserOptions": {
        "ecmaFeatures": {
            "jsx": true
        },
        "ecmaVersion": 2018,
        "sourceType": "module"
    },
    "plugins": [
        "react",
        "@typescript-eslint"
    ],
    "settings": {
        "import/resolver": {
            "typescript": {}
        }
    },
    "rules": {
        "import/extensions": 0,
        "max-len": ["error", { "code": 120 }],
        "react/destructuring-assignment": 0,
        "react/jsx-filename-extension": ["error", { "extensions": [".tsx"] }],
        "react/jsx-one-expression-per-line": 0,
        "react/state-in-constructor": ["error", "never"],
        "@typescript-eslint/explicit-function-return-type": 0
    },
    "overrides": [
        {
          // enable the rule specifically for TypeScript files
          "files": ["*.ts"],
          "rules": {
            "@typescript-eslint/explicit-function-return-type": ["error"]
          }
        }
      ]    
}