.eslintrc.json

{
  "plugins": ["jest", "@typescript-eslint"],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:prettier/recommended"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 9,
    "sourceType": "module",
    "project": "./tsconfig.lint.json"
  },
  "globals": {
    "fetch": true
  },
  "env": {
    "node": true,
    "es6": true,
    "jest/globals": true
  },
  "rules": {
    "@typescript-eslint/ban-types": [
      "error",
      {
        "types": {
          "Number": {
            "message": "Use number instead",
            "fixWith": "number"
          },
          "String": {
            "message": "Use string instead",
            "fixWith": "string"
          },
          "Boolean": {
            "message": "Use boolean instead",
            "fixWith": "boolean"
          },
          "Object": {
            "message": "Use object instead",
            "fixWith": "object"
          },
          "{}": {
            "message": "Use object instead",
            "fixWith": "object"
          },
          "Symbol": {
            "message": "Use symbol instead",
            "fixWith": "symbol"
          }
        }
      }
    ],
    "@typescript-eslint/array-type": ["error", {"default": "array"}],
    "@typescript-eslint/explicit-module-boundary-types": "error",
    "@typescript-eslint/no-explicit-any": "error",
    "@typescript-eslint/no-unused-vars": "error",
    "@typescript-eslint/explicit-function-return-type": "error",
    "object-shorthand": ["error", "always"],
    "prefer-destructuring": [
      "error",
      {
        "array": false,
        "object": true
      },
      {
        "enforceForRenamedProperties": false
      }
    ],
    "no-console": ["error", {"allow": ["warn", "error"]}],
    "no-alert": "error",
    "no-debugger": "error"
  }
}