feat: support Bun as package manager (--bun flag)

[jericbas]

Problem

When using Bun (a fast JavaScript tool), vsce fails to package or publish extensions. The problem is in two places:

1. The prepublish step always uses npm run vscode:prepublish
2. This fails if npm is not installed, even when the project uses Bun

What happens:

> bun vsce package --no-dependencies
Executing prepublish script 'npm run vscode:prepublish'...
'npm' is not recognized as an internal or external command
ERROR npm failed with exit code 1

Solution

Add Bun support to vsce with new command line options:

• --bun : Force vsce to use Bun
• --no-bun : Force vsce to use npm instead of Bun
• Auto-detect Bun when bun.lock file exists

This makes vsce work with Bun projects without needing npm.

Changes Made

File	What changed
src/npm.ts	Add detectBun() to find Bun projects. Add getBunDependencies() function
src/main.ts	Add --bun and --no-bun options to CLI
src/package.ts	Add useBun option. Update prepublish to use bun run
src/publish.ts	Add useBun to publish options
src/test/package.test.ts	Add test for Bun support

How to Test

# Auto-detect Bun from bun.lock file
vsce package

# Force Bun
vsce package --bun

# Force npm (skip Bun detection)
vsce package --no-bun

# Publish with Bun
vsce publish --bun

All npm and yarn features still work the same as before.

[jericbas]

@microsoft-github-policy-service agree