.eslintrc.json

{
  "root": true,
  "env": {
    "browser": true,
    "es6": true
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": "latest",
    "sourceType": "module"
  },
  "extends": [
    "eslint:recommended",
    "plugin:import/recommended",
    "plugin:import/typescript",
    "plugin:promise/recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:prettier/recommended"
  ],
  "settings": {
    "import/extensions": [".js", ".jsx", ".ts", ".tsx"],
    "import/parsers": {
      "@typescript-eslint/parser": [".ts", ".tsx"]
    }
  },
  "rules": {
    "no-debugger": "warn",
    "no-implicit-coercion": ["error", { "allow": ["!!"] }],
    "no-unused-vars": "off",
    "promise/catch-or-return": [
      "error",
      { "allowFinally": true, "terminationMethod": ["catch", "finally"] }
    ],
    "@typescript-eslint/no-require-imports": "error",
    "@typescript-eslint/no-unused-vars": ["error", { "argsIgnorePattern": "^_" }]
  },
  "overrides": [
    {
      "files": ["./src/DataStore.ts"],
      "rules": {
        "@typescript-eslint/no-unused-vars": "off"
      }
    },
    {
      "files": ["./src/index.ts"],
      "rules": {
        "import/export": "off"
      }
    }
  ]
}