.eslintrc.json

{
  "parserOptions": {
    "project": "./tsconfig.json"
  },
  "env": {
    "browser": false,
    "node": true
  },
  "plugins": [
    "@typescript-eslint",
	"jest"
  ],
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:@typescript-eslint/recommended-requiring-type-checking",
    "plugin:prettier/recommended"
  ],
  "rules": {
    "no-warning-comments": "warn",
    "@typescript-eslint/array-type": ["error", {"default": "generic"}],
    "@typescript-eslint/consistent-indexed-object-style": "error",
    "@typescript-eslint/consistent-type-assertions": "error",
    "@typescript-eslint/consistent-type-definitions": "error",
    "@typescript-eslint/consistent-type-imports": "error",
    "@typescript-eslint/explicit-function-return-type": "error",
    "@typescript-eslint/explicit-member-accessibility": "error",
    "@typescript-eslint/explicit-module-boundary-types": "error",
    "@typescript-eslint/member-delimiter-style": "error",
    "@typescript-eslint/member-ordering": "error",
    "@typescript-eslint/method-signature-style": ["error", "method"],
    "@typescript-eslint/no-base-to-string": "error",
    "@typescript-eslint/no-confusing-non-null-assertion": "error",
    "@typescript-eslint/no-confusing-void-expression": "error",
    "@typescript-eslint/no-extraneous-class": "error",
    "@typescript-eslint/no-invalid-void-type": "error",
    "@typescript-eslint/no-meaningless-void-operator": "error",
    "@typescript-eslint/no-namespace": ["error", {"allowDeclarations": true}],
    "@typescript-eslint/no-non-null-asserted-nullish-coalescing": "error",
    "@typescript-eslint/no-parameter-properties": "error",
    "@typescript-eslint/no-unnecessary-boolean-literal-compare": "error",
    "@typescript-eslint/no-unnecessary-condition": "error",
    "@typescript-eslint/no-unnecessary-qualifier": "error",
    "@typescript-eslint/non-nullable-type-assertion-style": "error",
    "@typescript-eslint/prefer-for-of": "error",
    "@typescript-eslint/prefer-function-type": "error",
    "@typescript-eslint/prefer-includes": "error",
    "@typescript-eslint/prefer-literal-enum-member": "error",
    "@typescript-eslint/prefer-nullish-coalescing": "error",
    "@typescript-eslint/prefer-optional-chain": "error",
    "@typescript-eslint/prefer-readonly": "error",
    "@typescript-eslint/prefer-reduce-type-parameter": "error",
    "@typescript-eslint/prefer-regexp-exec": "error",
    "@typescript-eslint/prefer-return-this-type": "error",
    "@typescript-eslint/prefer-string-starts-ends-with": "error",
    "@typescript-eslint/promise-function-async": "error",
    "@typescript-eslint/require-array-sort-compare": "error",
    "@typescript-eslint/sort-type-union-intersection-members": "error",
    "@typescript-eslint/strict-boolean-expressions": "error",
    "@typescript-eslint/switch-exhaustiveness-check": "error",
    "@typescript-eslint/unified-signatures": "error"
  },
  "overrides": [
    {
      "files": ["__tests__/**/*.test.ts"],
      "extends": [
	"plugin:jest/recommended",
	"plugin:jest/style"
      ],
      "rules": {
	"jest/consistent-test-it": ["error", {"withinDescribe": "test"}],
	"jest/no-duplicate-hooks": "error",
	"jest/no-if": "error",
	"jest/no-test-return-statement": "error",
	"jest/prefer-called-with": "error",
	"jest/prefer-expect-assertions": ["error", {"onlyFunctionsWithAsyncKeyword": true}],
	"jest/prefer-expect-resolves": "error",
	"jest/prefer-hooks-on-top": "error",
	"jest/prefer-spy-on": "error",
	"jest/prefer-strict-equal": "error",
	"jest/require-hook": "error",
	"jest/require-to-throw-message": "error",
	"jest/unbound-method": "error"
      }
    }
  ]
}