Function findPowerShell

src/utils/shell/powershellDetection.ts:24–57

()

 * Windows/macOS, PATH is sufficient.
 */
export async function findPowerShell(): Promise<string | null> {
  const pwshPath = await which('pwsh')
  if (pwshPath) {
    // Snap launcher hangs in subprocesses. Prefer the direct binary.
    // Check both the resolved PATH entry and its symlink target: on
    // some distros /usr/bin/pwsh is a symlink to /snap/bin/pwsh, which
    // would bypass a naive startsWith('/snap/') on the which() result.
    if (getPlatform() === 'linux') {
      const resolved = await realpath(pwshPath).catch(() => pwshPath)
      if (pwshPath.startsWith('/snap/') || resolved.startsWith('/snap/')) {
        const direct =
          (await probePath('/opt/microsoft/powershell/7/pwsh')) ??
          (await probePath('/usr/bin/pwsh'))
        if (direct) {
          const directResolved = await realpath(direct).catch(() => direct)
          if (
            !direct.startsWith('/snap/') &&
            !directResolved.startsWith('/snap/')
          ) {
            return direct
          }
        }
      }
    }
    return pwshPath
  }

  const powershellPath = await which('powershell')
  if (powershellPath) {
    return powershellPath
  }

  return null
}

let cachedPowerShellPath: Promise<string | null> | null = null