Describe the bug

In vite v8 import.meta.glob behaves differently in dev and build for directories that contain parenthesis (which is used in SvelteKit for example).
In dev mode parenthesis must be escaped, in build mode they must not be escaped.

In this example (from the reproduction repo)

const escaped = import.meta.glob("./\\(dir\\)/*.js", { eager: true })
const unescaped = import.meta.glob("./(dir)/*.js", { eager: true })

• escaped will be populated only in dev mode
• unescaped will be populated only in build mode

Reproduction

https://github.com/DominikRusso/vite-glob-paren-repro

Steps to reproduce

1. run pnpm install
2. run pnpm dev and visit http://localhost:5173
3. only escaped will be populated
4. run pnpm build followed by pnpm preview and visit http://localhost:4173
5. only unescaped will be populated

System Info

System:
    OS: macOS 26.4
    CPU: (10) arm64 Apple M4
    Memory: 464.78 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 25.9.0 - /opt/homebrew/bin/node
    npm: 11.12.1 - /opt/homebrew/bin/npm
    pnpm: 10.33.0 - /opt/homebrew/bin/pnpm
    Deno: 2.7.11 - /opt/homebrew/bin/deno
  Browsers:
    Chrome: 146.0.7680.178
    Firefox: 148.0
    Safari: 26.4
  npmPackages:
    vite: 8.0.5 => 8.0.5

Used Package Manager

pnpm

Logs

No response

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.
• Make sure this is a Vite issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to vuejs/core instead.
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• The provided reproduction is a minimal reproducible example of the bug.