WordPress Helper Functions: Enqueue Styles and Scripts with Automatic Cache Busting

style-script-loader.php

/**
 * Includes CSS styles with automatic file version specification.
 *
 * @param string $name Unique style name for registration.
 * @param string $path Path to style file relative to theme directory.
 * @param array $dep List of dependent styles (empty by default).
 * @return void|false Returns wp_enqueue_style() result or false if file not found.
 */
function theme_prefix_enqueue_style($name, $path, $dep = [])
{
  $dir_uri = get_template_directory_uri();
  $dir = get_template_directory();

  $path = '/' . ltrim($path, '/');

  $mtime = file_exists($dir . $path) ? filemtime($dir . $path) : false;

  return wp_enqueue_style(
    $name,
    $dir_uri . $path,
    $dep,
    $mtime
  );
}

/**
 * Includes JavaScript files with automatic file version specification.
 *
 * @param string $name Unique style name for registration.
 * @param string $path Path to style file relative to theme directory.
 * @param array $dep List of dependent styles (empty by default).
 * @return void|false Returns wp_enqueue_script() result or false if file not found.
 */
function theme_prefix_enqueue_script($name, $path, $dep = [])
{
  $dir_uri = get_template_directory_uri();
  $dir = get_template_directory();

  $path = '/' . ltrim($path, '/');

  $mtime = file_exists($dir . $path) ? filemtime($dir . $path) : false;

  return wp_enqueue_script(
    $name,
    $dir_uri . $path,
    $dep,
    $mtime
  );
}