Describe the bug

iTerm2 does not clear the screen properly when vitest is running in watch mode.

Reproduction

Use iTerm2 under Mac.

Run vitest on any project and on re-run not whole screen was cleared, there are some leftovers from previous run.

vitest currently uses to clear the screen and erase scrollback.

this.console.log(`${CLEAR_SCREEN}${ERASE_SCROLLBACK}${message}`)

iTerm2 reacts properly on that sequence, although clear screen sequence leaves 1 page visible and erase scrollback removes the history leaving this not-cleared page.

By flipping the sequence iTerm2 behaves properly.

this.console.log(`${ERASE_SCROLLBACK}${CLEAR_SCREEN}${message}`)

I've added changes in this PR against 1.6.0 version. Although I'm still using 1.5.3 due to cloudflare limitations.

https://github.com/vitest-dev/vitest/pull/5978/files

The erase scrollback and clear screen can be tested in shell using

printf '\e[3J' && printf '\x1Bc' # does not clear all screen
printf '\x1Bc' && printf '\e[3J' # clears everything

This was also tested on default macos terminal and it works fine too.

System Info

System:
    OS: macOS 14.5
    CPU: (10) arm64 Apple M2 Pro
    Memory: 65.22 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.2.0 - /opt/homebrew/bin/node
    npm: 10.7.0 - /opt/homebrew/bin/npm
    pnpm: 9.4.0 - /opt/homebrew/bin/pnpm
  Browsers:
    Brave Browser: 125.1.66.118
    Chrome: 126.0.6478.116
    Safari: 17.5
  npmPackages:
    @vitest/monorepo:  1.5.3

Used Package Manager

pnpm

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.