diff --git a/eng/common/scripts/TypeSpec-Project-Generate.ps1 b/eng/common/scripts/TypeSpec-Project-Generate.ps1
index 839e0c6182f..2ad896fd812 100644
--- a/eng/common/scripts/TypeSpec-Project-Generate.ps1
+++ b/eng/common/scripts/TypeSpec-Project-Generate.ps1
@@ -73,6 +73,7 @@ function NpmInstallAtRoot() {
         $npmInstallCommand = "npm install --prefix $root $emitterName@$replacementVersion --no-package-lock --omit=dev"
         Write-Host($npmInstallCommand)
         Invoke-Expression $npmInstallCommand
+        if ($LASTEXITCODE) { exit $LASTEXITCODE }
 
         if ($hasPackageFile) {
             git restore package.json