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Vitest · Concept

vi

vi.mock replaces an imported ES module with a factory, mock file, or automatic mock. Its call is hoisted before imports.

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Syntax

vi.mock(path: string, factory?: MockOptions | MockFactory<unknown>): void
vi.mock<T>(module: Promise<T>, factory?: MockOptions | MockFactory<T>): void

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  • vi.doMock
  • vi.hoisted
  • vi.importActual
  • vi.importMock
  • vi.unmock
  • vi.doUnmock
  • vi.resetModules

Source: Vi | Vitest. Checked 2026-11-03.