Move safe-chain package to packages/safe-chain

packages/safe-chain/src/shell-integration/startup-scripts/init-pwsh.ps1

@@ -0,0 +1,80 @@
+function Write-SafeChainWarning {
+    param([string]$Command)
+    
+    # PowerShell equivalent of ANSI color codes: yellow background, black text for "Warning:"
+    Write-Host "Warning:" -BackgroundColor Yellow -ForegroundColor Black -NoNewline
+    Write-Host " safe-chain is not available to protect you from installing malware. $Command will run without it."
+    
+    # Cyan text for the install command
+    Write-Host "Install safe-chain by using " -NoNewline
+    Write-Host "npm install -g @aikidosec/safe-chain" -ForegroundColor Cyan -NoNewline
+    Write-Host "."
+}
+
+function Test-CommandAvailable {
+    param([string]$Command)
+    
+    try {
+        Get-Command $Command -ErrorAction Stop | Out-Null
+        return $true
+    }
+    catch {
+        return $false
+    }
+}
+
+function Invoke-RealCommand {
+    param(
+        [string]$Command,
+        [string[]]$Arguments
+    )
+    
+    # Find the real executable to avoid calling our wrapped functions
+    $realCommand = Get-Command -Name $Command -CommandType Application | Select-Object -First 1
+    if ($realCommand) {
+        & $realCommand.Source @Arguments
+    }
+}
+
+function Invoke-WrappedCommand {
+    param(
+        [string]$OriginalCmd,
+        [string]$AikidoCmd,
+        [string[]]$Arguments
+    )
+
+    if (Test-CommandAvailable $AikidoCmd) {
+        & $AikidoCmd @Arguments
+    }
+    else {
+        Write-SafeChainWarning $OriginalCmd
+        Invoke-RealCommand $OriginalCmd $Arguments
+    }
+}
+
+function npx {
+    Invoke-WrappedCommand "npx" "aikido-npx" $args
+}
+
+function yarn {
+    Invoke-WrappedCommand "yarn" "aikido-yarn" $args
+}
+
+function pnpm {
+    Invoke-WrappedCommand "pnpm" "aikido-pnpm" $args
+}
+
+function pnpx {
+    Invoke-WrappedCommand "pnpx" "aikido-pnpx" $args
+}
+
+function npm {
+    # If args is just -v or --version and nothing else, just run the npm version command
+    # This is because nvm uses this to check the version of npm
+    if (($args.Length -eq 1) -and (($args[0] -eq "-v") -or ($args[0] -eq "--version"))) {
+        Invoke-RealCommand "npm" $args
+        return
+    }
+    
+    Invoke-WrappedCommand "npm" "aikido-npm" $args
+}