expectGroupPaddingLines

Enforces padding around expect groups.

✅ This rule is included in the vitest stylisticStrict presets.

Keeping related expect() calls together and separating them from setup or other statements makes assertions easier to scan. This rule enforces blank lines around assertion groups while still allowing consecutive expect() or expectTypeOf() calls to stay grouped.

Examples

❌ Incorrect

import { expect, test } from "vitest";

test("value", () => {
  let count = 123;
  expect(count).toEqual(123);
  expect(123).toEqual(count);
  count = 456;
  expect(count).toEqual(456);
});

import { expectTypeOf, test } from "vitest";

test("types", () => {
  const value = 123;
  expectTypeOf(value).toBeNumber();
  expectTypeOf(value).toBeNumber();
  const text = "abc";
  // Comment
  expectTypeOf(text).toBeString();
  expectTypeOf(text).toBeString();
});

✅ Correct

import { expect, test } from "vitest";

test("value", () => {
  let count = 123;

  expect(count).toEqual(123);
  expect(123).toEqual(count);

  count = 456;

  expect(count).toEqual(456);
});

import { expectTypeOf, test } from "vitest";

test("types", () => {
  const value = 123;

  expectTypeOf(value).toBeNumber();
  expectTypeOf(value).toBeNumber();

  const text = "abc";

  // Comment
  expectTypeOf(text).toBeString();
  expectTypeOf(text).toBeString();
});

Options

This rule is not configurable.

When Not To Use It

If your team prefers mixing setup, logging, and assertions without extra whitespace, this rule may feel too rigid. That can be reasonable in very short tests where assertion boundaries are already obvious.

Further Reading

• Vitest API: expect
• Vitest API: expectTypeOf

Equivalents in Other Linters

• ESLint: vitest/padding-around-expect-groups