.eslintrc.json

{
  "env": {
    "browser": true,
    "node": true,
    "es2020": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:prettier/recommended"
  ],
  "parserOptions": {
    "ecmaVersion": 11,
    "sourceType": "module",
    "project": ["tsconfig.json", "jsconfig.json"]
  },
  "overrides": [{
    "files": ["*.ts"],
    "parser": "@typescript-eslint/parser",
    "extends": [
      "plugin:@typescript-eslint/recommended",
      "plugin:@typescript-eslint/recommended-requiring-type-checking",
      "plugin:import/typescript"
    ],
    "rules": {
      "@typescript-eslint/restrict-template-expressions": "off",
      "@typescript-eslint/explicit-module-boundary-types": "error",
      "@typescript-eslint/no-non-null-assertion": "error",
      "@typescript-eslint/no-unused-vars": "error",
      "@typescript-eslint/no-misused-promises": ["error", {
        "checksVoidReturn": false
      }]
    }
  }],
  "plugins": [
    "prettier",
    "import",
    "@typescript-eslint"
  ],
  "settings": {
    "import/parsers": {
      "@typescript-eslint/parser": [".ts"]
    }
  },
  "rules": {
    "semi": ["error", "always"],
    "one-var": "off",
    "space-before-function-paren": "off",
    "no-throw-literal": "off",
    "camelcase": ["error", { "properties": "always" }],
    "no-console": "error",
    "no-alert": "error",
    "no-debugger": "error",
    "prefer-arrow-callback": "error",
    "object-property-newline": "off",
    "no-useless-escape": "off",
    "no-var": "error",
    "prefer-const": "error",
    "no-unused-expressions": "off",
    "strict": ["error", "never"],
    "no-mixed-operators": "off",
    "prefer-promise-reject-errors": "off",
    "standard/no-callback-literal": "off",
    "object-curly-spacing": "off",
    "quote-props": "off",
    "no-new-object": "error",
    "object-shorthand": "error",
    "no-array-constructor": "error",
    "array-callback-return": "error",
    "no-eval": "error",
    "no-new-func": "error",
    "prefer-rest-params": "error",
    "prefer-spread": "error",
    "no-useless-constructor": "error",
    "no-dupe-class-members": "error",
    "no-duplicate-imports": "error",
    "eqeqeq": "error",
    "no-unneeded-ternary": "error",
    "curly": "error",
    "prettier/prettier": "error",
    "no-empty": "off",
    "no-restricted-syntax": [
      "error",
      {
        "selector": "ExportDefaultDeclaration",
        "message": "Prefer named exports"
      }
    ],
    "import/first": "error",
    "import/no-default-export": "error"
  }
}