.eslintrc.json

{
  "extends": [
    "airbnb-base",
    "airbnb-typescript/base",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/recommended-requiring-type-checking"
  ],
  "env": {
    "es2021": true
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaVersion": 2021,
    "project": "./tsconfig.json"
  },
  "plugins": ["@typescript-eslint"],
  "rules": {
    "max-len": ["error", { "code": 120 }],
    "semi": ["error", "never"],
    "@typescript-eslint/semi": ["error", "never"],
    "@typescript-eslint/unbound-method": ["error", { "ignoreStatic": true }]
  },
  "overrides": [
    {
      "files": ["src/**/*.spec.ts", "src/**/*.test.ts"],
      "plugins": ["jest"],
      "extends": ["plugin:jest/style"],
      "rules": {
        "@typescript-eslint/unbound-method": "off",
        "jest/unbound-method": "error"
      }
    }
  ]
}