---
url: /docs/guide/usage/linter/rules/vitest/prefer-each.md
---

### What it does

This rule enforces using `each` rather than manual loops.

### Why is this bad?

Manual loops for tests can be less readable and more error-prone. Using
`each` provides a clearer and more concise way to run parameterized tests,
improving readability and maintainability.

### Examples

Examples of **incorrect** code for this rule:

```js
for (const item of items) {
  describe(item, () => {
    expect(item).toBe("foo");
  });
}
```

Examples of **correct** code for this rule:

```js
describe.each(items)("item", (item) => {
  expect(item).toBe("foo");
});
```

## How to use

## Version

This rule was added in v0.9.0.

## References