Check if SharePoint Publishing Page Exists using CSOM PowerShell

CheckPublishingPageExists.ps1

function CheckPageExists()
{
    param(
        [Parameter(Mandatory=$true)][string]$siteurl,
        [Parameter(Mandatory=$false)][System.Net.NetworkCredential]$credentials,
        [Parameter(Mandatory=$false)][string]$PageName
    )
    begin{
        try
        {
            $context = New-Object Microsoft.SharePoint.Client.ClientContext($siteurl)
	        $context.Credentials = $credentials

	        
	        $Pages = $context.Web.Lists.GetByTitle('Pages')
	        $camlQuery = New-Object Microsoft.SharePoint.Client.CamlQuery
	        $camlQuery.ViewXml = '<View><Query><Where><Eq><FieldRef Name="FileLeafRef" /><Value Type="Text">'+ $PageName +'</Value></Eq></Where></Query></View>'
	        $Page = $Pages.GetItems($camlQuery)
	        $context.Load($Page)
	        $context.ExecuteQuery()
        }
        catch
        {
            Write-Host "Error while getting context. Error -->> "  + $_.Exception.Message -ForegroundColor Red
        }
    }
    process{
        try
        {
            $file = $Page.File
            if($file)
            {
                #Execute if Page exists
                Write-Host "Page exists" -ForegroundColor Green
                return $true
            }
            else
            {
                #Execute if Page does not exists
                Write-Host "Page does not exists" -ForegroundColor Green
                return $false
            }

        }
        catch
        {
            Write-Host ("Error while checking for Page. Error -->> " + $_.Exception.Message) -ForegroundColor Red
        }
    }
    end{
        $context.Dispose()
    }
}