Add the below snippet into your functions.php file and it will return the current theme template WordPress is using in the console.

templatedebug

function templatedebug() {
    global $template; $curtemplate=basename($template);
?>
<script type="text/javascript">
console.log(<?php echo "\"current template: ".$curtemplate."\""; ?>);
</script>
<?php
}
add_action( 'wp_footer', 'templatedebug' );