.eslintrc.json

{
  "root": true,
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module",
    "project": "./tsconfig.json"
  },
  "extends": [
    "plugin:@typescript-eslint/recommended",
    "plugin:prettier/recommended"
  ],
  "plugins": [],
  "rules": {
    "@typescript-eslint/no-parameter-properties": "off",
    "@typescript-eslint/no-explicit-any": "off",
    "@typescript-eslint/no-use-before-define": [
      "error",
      {
        "functions": false,
        "typedefs": false,
        "classes": false
      }
    ],
    "@typescript-eslint/no-unused-vars": [
      "error",
      {
        "ignoreRestSiblings": true,
        "argsIgnorePattern": "^_"
      }
    ],
    "@typescript-eslint/explicit-function-return-type": [
      "warn",
      {
        "allowExpressions": true,
        "allowTypedFunctionExpressions": true
      }
    ],
    "@typescript-eslint/no-object-literal-type-assertion": "off",
    "@typescript-eslint/interface-name-prefix": "off",
    "@typescript-eslint/no-non-null-assertion": "off",
    "no-var": "error",
    "prefer-const": "error",
    "no-trailing-spaces": "error",
    "curly": "error",
    "brace-style": "error",
    "arrow-parens": [
      "error",
      "as-needed"
    ],
    "no-console": "off",
    "no-unused-vars": [
      "error",
      {
        "argsIgnorePattern": "^_",
        "caughtErrors": "all"
      }
    ],
    "no-useless-escape": "warn",
    "no-constant-condition": "off",
    "no-multiple-empty-lines": [
      "error",
      {
        "max": 1,
        "maxEOF": 1
      }
    ],
    "no-throw-literal": "error",
    "prefer-promise-reject-errors": "error",
    "no-return-await": "error",
    "eqeqeq": [
      "error",
      "always"
    ],
    "semi": [
      "error",
      "always"
    ],
    "comma-dangle": [
      "error",
      {
        "arrays": "never",
        "objects": "never",
        "imports": "never",
        "exports": "never",
        "functions": "ignore"
      }
    ]
  },
  "overrides": [
    {
      "files": [
        "*.test.ts"
      ],
      "rules": {
        "@typescript-eslint/explicit-function-return-type": "off"
      }
    }
  ]
}