.eslintrc.json

{
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2019,
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "settings": {
    "react": {
      "version": "detect"
    }
  },
  "extends": ["eslint:recommended"],
  "rules": {
    "semi": ["error", "never"],
    "strict": ["error", "never"],
    "react/prop-types": ["off"]
  },
  "env": {
    "jest": true,
    "browser": true,
    "node": true
  },
  "overrides": [
    {
      "files": "**/*.+(ts|tsx)",
      "parser": "@typescript-eslint/parser",
      "parserOptions": {
        "project": "./tsconfig.json"
      },
      "plugins": ["@typescript-eslint/eslint-plugin"],
      "extends": [
        "plugin:@typescript-eslint/eslint-recommended",
        "plugin:@typescript-eslint/recommended"
      ],
      "rules": {
        "@typescript-eslint/ban-ts-comment": ["off"]
      }
    }
  ]
}