.eslintrc

{
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:jest/all",
    "prettier"
  ],
  "env": {
    "es6": true
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "sourceType": "module"
  },
  "plugins": ["prettier", "jest", "@typescript-eslint/eslint-plugin"],
  "rules": {
    "no-unused-vars": "off",
    "@typescript-eslint/no-unused-vars": "error",
    "@typescript-eslint/array-type": ["error", { "default": "generic" }],
    "@typescript-eslint/no-use-before-define": [
      "error",
      { "functions": false, "classes": false }
    ],
    "@typescript-eslint/explicit-member-accessibility": "off",
    "@typescript-eslint/explicit-function-return-type": [
      "error",
      { "allowExpressions": true }
    ]
  },
  "overrides": [
    {
      "files": "**/__tests__/**/*.{js,ts}",
      "rules": {
        "jest/expect-expect": "off",
        "jest/no-conditional-in-test": "off",
        "jest/no-if": "off",
        "jest/prefer-expect-assertions": "off",
        "jest/require-hook": [
          "error",
          { "allowedFunctionCalls": ["expect.extend"] }
        ]
      },
      "env": {
        "jest/globals": true
      }
    }
  ]
}