minify: 'terser' gives [vite:terser] import.meta is only valid inside modules.error when building

[Gotxiko]

Describe the bug

After updating to Vite 6.0.4 (still happening in 6.0.5) , trying to run a build gives the following error if minify: 'terser', is defined inside build in vite.config.ts. Removing or commenting this line performs the build process without issues.

vite v6.0.5 building for development...
✓ 3 modules transformed.
x Build failed in 65ms
error during build:
[vite:terser] import.meta is only valid inside modules.
    at <parse> (:6)
    at AsyncFunction (native)
    at new FakeWorker (/../node_modules/vite/dist/node/chunks/dep-BZMjGe_U.js:12732:20)
    at new WorkerWithFallback (/../node_modules/vite/dist/node/chunks/dep-BZMjGe_U.js:12773:28)
    at makeWorker (/../node_modules/vite/dist/node/chunks/dep-BZMjGe_U.js:12807:32)
    at <anonymous> (/../node_modules/vite/dist/node/chunks/dep-BZMjGe_U.js:12833:18)
    at renderChunk (/../node_modules/vite/dist/node/chunks/dep-BZMjGe_U.js:12825:23)
    at <anonymous> (/../node_modules/rollup/dist/es/shared/node-entry.js:20812:40)
    at processTicksAndRejections (native:7:39)
error: script "build" exited with code 1

Reproduction

bunx --bun vite build

Steps to reproduce

• Update Vite to 6.0.4 or 6.0.5.
• Try to run build command with minify: 'terser' in vite.config

System Info

System:
    OS: macOS 14.5
    CPU: (8) arm64 Apple M2
    Memory: 86.19 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Yarn: 1.22.21 - /usr/local/bin/yarn
    npm: 10.8.2 - ~/Library/Application Support/Herd/config/nvm/versions/node/v20.18.1/bin/npm
    pnpm: 8.12.1 - /usr/local/bin/pnpm
    bun: 1.1.40 - /usr/local/bin/bun
  Browsers:
    Chrome: 131.0.6778.205
    Chrome Canary: 133.0.6906.0
    Safari: 17.5
  npmPackages:
    @vitejs/plugin-legacy: ^6.0.0 => 6.0.0 
    vite: ^6.0.5 => 6.0.5

Used Package Manager

bun

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.
• 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.

[hi-ogawa]

Can you provide a reproduction in Node? If it breaks only on Bun, please report an issue on Bun.
I haven't checked but the error looks similar to oven-sh/bun#15738

[Gotxiko]

Using Node the issue doesn't happen, seems like it only happens under bun by forcing it as the engine to use and it looks like the same issue you linked. Guess this issue can stay closed :)