bbp_enqueue_script( string $handle = '', string|bool $file = '',  $dependencies = array(),  $version = false, bool $in_footer = 'all' )

function bbp_enqueue_script( $handle = '', $file = '', $dependencies = array(), $version = false, $in_footer = 'all' ) {

	// No file found yet
	$located = false;

	// Trim off any slashes from the template name
	$file = ltrim( $file, '/' );

	// Make sure there is always a version
	if ( empty( $version ) ) {
		$version = bbp_get_version();
	}

	// Loop through template stack
	foreach ( (array) bbp_get_template_stack() as $template_location ) {

		// Continue if $template_location is empty
		if ( empty( $template_location ) ) {
			continue;
		}

		// Check child theme first
		if ( file_exists( trailingslashit( $template_location ) . $file ) ) {
			$located = trailingslashit( $template_location ) . $file;
			break;
		}
	}

	// Enqueue if located
	if ( !empty( $located ) ) {

		$content_dir = constant( 'WP_CONTENT_DIR' );

		// IIS (Windows) here
		// Replace back slashes with forward slash
		if ( strpos( $located, '\\' ) !== false ) {
			$located     = str_replace( '\\', '/', $located     );
			$content_dir = str_replace( '\\', '/', $content_dir );
		}

 		// Make path to file relative to site URL
		$located = str_replace( $content_dir, content_url(), $located );

		// Enqueue the style
		wp_enqueue_script( $handle, $located, $dependencies, $version, $in_footer );
	}

	return $located;
}