Marcos Hernanz 090f1b7275 fix: suppress missing package manager errors in next info (#97946) ...

## What

- capture stdout and stderr for both direct and shell-fallback
package-manager version probes
- keep successful version output unchanged and return `N/A` when a probe
fails
- add deterministic cross-platform regression coverage with a failing
Yarn shim

Closes #97932

## Why

PR #71134 added an `execSync` fallback so package-manager command shims
can be resolved on Windows. When `stdio` is omitted, Node mirrors stderr
from failed synchronous child processes to the parent, so an unavailable
Yarn or pnpm can print raw shell errors before `next info` reports
`N/A`.

Passing `{ stdio: "pipe" }` to both probes preserves captured stdout and
the Windows fallback while keeping expected probe failures silent. The
change stays scoped to package-manager version detection; shared
registry discovery is unchanged.

## Testing

- `pnpm --filter next typescript`
- `pnpm --filter next build`
- `pnpm test-types --pretty false`
- ESLint and Prettier on both changed files
- `pnpm test-start test/e2e/cli/cli.test.ts` (66 passed, 1 skipped)
- built-CLI reproduction with npm available and Yarn/pnpm absent: both
report `N/A` with no Yarn/pnpm command-not-found output
- autoreview with GPT-5.6 Sol xhigh and Claude Opus 5 xhigh: zero
findings

---------

Co-authored-by: vercel[bot] <35613825+vercel[bot]@users.noreply.github.com>

2026-09-03 18:12:15 -07:00

..

basic

…

certificates

…

duplicate-sass

…

cli.test.ts

fix: suppress missing package manager errors in next info (#97946)

2026-09-03 18:12:15 -07:00