feat: expose package manager detection and download APIs

[fengmk2]

TL;DR

Expose package manager detection and download functionality through the CLI binding API.

What changed?

• Added two new public functions to the CLI binding API:
  • detectWorkspace: Detects the workspace root, package manager type, version, and whether it's a monorepo
  • downloadPackageManager: Downloads a specified package manager version
• Refactored the package manager download logic in vite_install to make it more modular and reusable
• Added TypeScript type definitions and JSDoc documentation for the new functions
• Created tests for the new functionality with fixtures for different project types

How to test?

1. Run the new tests:

   pnpm test packages/cli/src/__tests__/detectWorkspace.spec.ts
   pnpm test packages/cli/src/__tests__/downloadPackageManager.spec.ts
   

2. Try using the new API in a project:

   import { detectWorkspace, downloadPackageManager } from '@vitejs/cli';
   
   // Detect workspace and package manager
   const workspace = await detectWorkspace(process.cwd());
   console.log(workspace);
   
   // Download a package manager
   const result = await downloadPackageManager({
     name: 'pnpm',
     version: 'latest'
   });
   console.log(result);

Why make this change?

This change enables external tools and plugins to leverage Vite's package manager detection and download capabilities. By exposing these functions through the CLI binding API, other tools can reliably determine the project structure and ensure the correct package manager is available without reimplementing this logic.

[fengmk2]

• feat: add gen command for global cli #301
• feat: expose package manager detection and download APIs #308 👈 (View in Graphite)
• feat: add vite_command crate for command execution #296 : 1 other dependent PR (#309 )
• main

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[fengmk2]

Merge activity

• Nov 21, 3:41 AM UTC: Graphite rebased this pull request as part of a merge.
• Nov 21, 5:08 AM UTC: @fengmk2 merged this pull request with Graphite.

[Copilot]

Pull Request Overview

This PR exposes package manager detection and download functionality through the CLI binding API, enabling external tools to leverage Vite's package manager capabilities without reimplementing the logic.

Key Changes:

• Added detectWorkspace and downloadPackageManager functions to the public API
• Refactored download_package_manager in the Rust crate to return package metadata (install_dir, package_name, version)
• Created comprehensive test suites with fixtures for pnpm and npm monorepos

Reviewed Changes

Copilot reviewed 13 out of 15 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
packages/cli/binding/src/package_manager.rs	New module implementing the NAPI bindings for workspace detection and package manager download
packages/cli/binding/src/lib.rs	Exports the new public functions
packages/cli/binding/index.js	Exports the new functions to JavaScript
packages/cli/binding/index.d.ts	TypeScript type definitions for the new API
crates/vite_install/src/package_manager.rs	Refactored download_package_manager to return tuple with metadata and made functions public
crates/vite_install/src/lib.rs	Exports newly public functions
packages/cli/binding/tests/detect-workspace.spec.ts	Test suite for workspace detection
packages/cli/binding/tests/download-package-manager.spec.ts	Test suite for package manager download
packages/cli/binding/tests/fixtures/*	Test fixtures for pnpm-monorepo, npm-monorepo, and npm-project
packages/cli/binding/Cargo.toml	Added vite_workspace dependency
Cargo.lock	Updated with new dependency

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