[Replacement]: Jest

[joaopedrodcf]

Package to replace

vitest

Suggested replacement(s)

vitest

Manifest type

preferred (lighter or more modern alternative package)

Rationale

Vitest is a faster, modern alternative to Jest, designed for ESM-first environments and part of void zero ecossytem of tools.

Key advantages:

• Faster
• Native support for ESM, TypeScript, and modern frontend tooling
• Seamless integration with Vite projects (shared config, no extra setup)
• Improved developer experience with hot reload for tests
• Jest-compatible API (describe, it, expect), making migratio easy
• Browser mode tests

Availability

No response

Code example (optional)

/**
 * Before (Jest)
 */
// Jest uses globals
import { sum } from './sum'

describe('sum', () => {
  it('adds numbers', () => {
    expect(sum(1, 2)).toBe(3)
  })
})

/**
 * After (Vitest)
 */
import { describe, it, expect } from 'vitest'
import { sum } from './sum'

describe('sum', () => {
  it('adds numbers', () => {
    expect(sum(1, 2)).toBe(3)
  })
})

[43081j]

this is a difficult one since it is still widely used in react circles at least.

it is also replaceable by various things rather than just vitest. it can be replaced by node test runner, mocha, playwright, etc.

i think this is better suited for an ecosystem issue of helping migrate away from jest to one of these, rather than recommending jest to vitest across the board.