.eslintrc.json

{
  "plugins": [
    "jest",
    "@typescript-eslint"
  ],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/recommended-requiring-type-checking"
  ],
  "rules": {
    "camelcase": "error",
    "no-unused-vars": "error",
    "@typescript-eslint/no-unused-vars": "error",
    "@typescript-eslint/explicit-member-accessibility": [
      "error",
      {
        "accessibility": "no-public"
      }
    ],
    "@typescript-eslint/array-type": "error",
    "@typescript-eslint/await-thenable": "error",
    "@typescript-eslint/ban-ts-comment": "warn",
    "@typescript-eslint/naming-convention": [
      "error",
      {
        "selector": "default",
        "format": [
          "camelCase"
        ]
      },
      {
        "selector": "variable",
        "format": [
          "camelCase",
          "UPPER_CASE"
        ]
      },
      {
        "selector": "parameter",
        "format": [
          "camelCase"
        ],
        "leadingUnderscore": "allow"
      },
      {
        "selector": "memberLike",
        "modifiers": [
          "private"
        ],
        "format": [
          "camelCase"
        ],
        "leadingUnderscore": "require"
      },
      {
        "selector": "typeLike",
        "format": [
          "PascalCase"
        ]
      },
      {
        "selector": "typeParameter",
        "format": [
          "PascalCase"
        ],
        "prefix": [
          "T"
        ]
      }
    ],
    "@typescript-eslint/explicit-function-return-type": [
      "error",
      {
        "allowExpressions": true
      }
    ],
    "@typescript-eslint/func-call-spacing": [
      "error",
      "never"
    ],
    "@typescript-eslint/no-array-constructor": "error",
    "@typescript-eslint/no-empty-interface": "error",
    "@typescript-eslint/no-explicit-any": "warn",
    "@typescript-eslint/no-extraneous-class": "error",
    "@typescript-eslint/no-for-in-array": "error",
    "@typescript-eslint/no-inferrable-types": "error",
    "@typescript-eslint/no-misused-new": "error",
    "@typescript-eslint/no-namespace": "error",
    "@typescript-eslint/no-non-null-assertion": "warn",
    "@typescript-eslint/no-unnecessary-qualifier": "error",
    "@typescript-eslint/no-unnecessary-type-assertion": "error",
    "@typescript-eslint/no-useless-constructor": "error",
    "@typescript-eslint/prefer-for-of": "warn",
    "@typescript-eslint/prefer-function-type": "warn",
    "@typescript-eslint/prefer-includes": "error",
    "@typescript-eslint/prefer-string-starts-ends-with": "error",
    "@typescript-eslint/restrict-plus-operands": "error",
    "@typescript-eslint/type-annotation-spacing": "error",
    "@typescript-eslint/unbound-method": "error"
  },
  "parserOptions": {
    "ecmaVersion": 9,
    "sourceType": "module",
    "project": "./tsconfig.json"
  },
  "env": {
    "browser": true,
    "es6": true,
    "jest/globals": true
  }
}