build: add clean option for codegen script

Author: jorgerangel-msft

.github/workflows/codegen-validation.yml

@@ -35,7 +35,7 @@ jobs:
         shell: pwsh
         run: |
           Write-Host "Running code generation validation..."
-          ./scripts/Invoke-CodeGen.ps1
+          ./scripts/Invoke-CodeGen.ps1 -Clean
           
           if ($LASTEXITCODE -ne 0) {
             Write-Error "Code generation failed with exit code: $LASTEXITCODE"

scripts/Invoke-CodeGen.ps1

@@ -16,7 +16,10 @@ param(
     [string]$LocalRepositoryPath,
 
     [Parameter(Mandatory = $false)]
-    [switch]$Force
+    [switch]$Force,
+
+    [Parameter(Mandatory = $false)]
+    [switch]$Clean
 )
 
 function Invoke-ScriptWithLogging {
@@ -293,6 +296,14 @@ try {
 
     Write-ElapsedTime "npm ci complete"
 
+    if ($Clean) {
+        Invoke-ScriptWithLogging { npm run clean -w $codegenFolderPath }
+        if ($LASTEXITCODE -ne 0) {
+            exit $LASTEXITCODE
+        }
+        Write-ElapsedTime "npm run clean complete"
+    }
+
     Invoke-ScriptWithLogging { npm run build -w $codegenFolderPath }
     if ($LASTEXITCODE -ne 0) {
         exit $LASTEXITCODE