.eslintrc.json

{
  "parser": "@typescript-eslint/parser",
  "env": {
    "browser": true,
    "node": true
  },
  "plugins": ["@typescript-eslint", "jest", "import"],
  "extends": [
    "plugin:@typescript-eslint/recommended",
    "plugin:import/typescript",
    "plugin:prettier/recommended"
  ],
  "parserOptions": {
    "sourceType": "module",
    "ecmaVersion": 2018
  },
  "rules": {
    "import/namespace": "off",
    "import/order": ["error"],
    "no-unused-vars": "off",
    "@typescript-eslint/no-unused-vars": "error",
    "@typescript-eslint/member-delimiter-style": "off",
    "@typescript-eslint/explicit-function-return-type": "off",
    "@typescript-eslint/no-var-requires": "off",
    "@typescript-eslint/no-extra-semi": "off",
    "@typescript-eslint/no-explicit-any": "off"
  },
  "overrides": [
    {
      // enable the rule specifically for TypeScript files
      "files": ["*.ts", "*.tsx"],
      "rules": {
        "@typescript-eslint/explicit-function-return-type": ["error"]
      }
    }
  ]
}