vi.mock doesn't work after up to vite 4.3

[or2e]

Describe the bug

After updating to vite 4.3 version, vi.mock no longer work.
The test completes with an error:
ReferenceError: Cannot access %name% before initialization

Downgrading to vite 4.2 fixes the issue.

Reproduction

Vite 4.2 + Vitest
Vite 4.3 + Vitest - test fails

System Info

System:
  OS: Linux 5.15 Debian GNU/Linux 11 (bullseye) 11 (bullseye)
  CPU: (16) x64 Intel(R) Core(TM) i9-9900KF CPU @ 3.60GHz
  Memory: 10.10 GB / 15.58 GB
  Container: Yes
  Shell: 5.1.4 - /bin/bash
Binaries:
  Node: 18.14.2 - /usr/local/share/nvm/versions/node/v18.14.2/bin/node
  npm: 9.5.0 - /usr/local/share/nvm/versions/node/v18.14.2/bin/npm
npmPackages:
  @vitejs/plugin-vue: ^4.2.1 => 4.2.1 
  @vitest/coverage-c8: ^0.30.1 => 0.30.1 
  @vitest/ui: ^0.30.1 => 0.30.1 
  vite: ^4.3.4 => 4.3.4 
  vitest: ^0.30.1 => 0.30.1

Used Package Manager

npm

Validations

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• Read the Contributing Guidelines.
• Read the docs.
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• The provided reproduction is a minimal reproducible example of the bug.

[stackblitz]

Start a new pull request in StackBlitz Codeflow.

• vitejs-vite-fjaz2p (Open reproduction)
• vitejs-vite-q6qg7d (Open reproduction)

[sheremet-va]

This is expected behavior. vi.mock is hoisted to top of the file before any declarations and imports, so you can't access anything declared in that scope (I don't know how you could before, but it was never intended). To bypass that you can use vi.hoisted which will be introduced in the next release (probably tomorrow).