Function buildWindowsUpgradeScript

src/upgrade/index.ts:438–467

(bundleRoot: string, version: string, arch: string)

/** Build the in-place Windows upgrade script (exported for unit-testing). */
export function buildWindowsUpgradeScript(bundleRoot: string, version: string, arch: string): string {
  const target = `win32-${arch}`;
  const url = `https://github.com/${REPO}/releases/download/${version}/codegraph-${target}.zip`;
  // Windows can't DELETE a running exe but CAN rename it, so we upgrade IN
  // PLACE: download → rename the locked node.exe aside → extract the new bundle
  // over current\. Synchronous, no detached helper (which dies under SSH/job
  // objects and has worse UX). The running process keeps its renamed node.exe
  // mapped; the NEXT `codegraph` invocation uses the new one. We can't reuse
  // install.ps1 here — it `Remove-Item`s current\, which fails on the locked exe.
  return [
    `$ErrorActionPreference='Stop'`,
    `$dest='${bundleRoot}'`,
    `$url='${url}'`,
    `Write-Host "Downloading $url"`,
    `$tmp=Join-Path $env:TEMP ('cg-up-'+[guid]::NewGuid().ToString('N'))`,
    `New-Item -ItemType Directory -Force -Path $tmp | Out-Null`,
    `$zip=Join-Path $tmp 'cg.zip'`,
    `Invoke-WebRequest -Uri $url -OutFile $zip`,
    `$stage=Join-Path $tmp 'stage'`,
    `Expand-Archive -Path $zip -DestinationPath $stage -Force`,
    `$inner=Join-Path $stage 'codegraph-${target}'`,
    `$src=if(Test-Path $inner){$inner}else{$stage}`,
    `$node=Join-Path $dest 'node.exe'`,
    `if(Test-Path $node){Rename-Item -Path $node -NewName ('node.exe.old-'+[guid]::NewGuid().ToString('N')) -Force}`,
    `Copy-Item -Path (Join-Path $src '*') -Destination $dest -Recurse -Force`,
    `Get-ChildItem -Path $dest -Filter 'node.exe.old-*' -ErrorAction SilentlyContinue | ForEach-Object { try { Remove-Item $_.FullName -Force -ErrorAction Stop } catch {} }`,
    `Remove-Item -Recurse -Force $tmp -ErrorAction SilentlyContinue`,
    `Write-Host "Installed CodeGraph ${version} to $dest"`,
  ].join(';');
}

function upgradeWindowsBundle(
  method: Extract<InstallMethod, { kind: 'bundle' }>,