To speed up the final admin review process, I have the short list of the items that I found to be the most common. Surprisingly they’re just the basics, but we still need them to be properly done.
Things that should be prefixed are function names, class names, global variables, action/filter hooks, script handles, style handles and image size names.
Additionally: To avoid double loading, don’t prefix third-party scripts and styles.
Theme needs to properly load files, but also to be consistent as well.
get_template_directory(): Returns the absolute template directory path.
get_template_directory_uri(): Returns the template directory URI.
get_stylesheet_directory(): Returns the absolute stylesheet directory path.
get_stylesheet_directory_uri(): Returns the stylesheet directory URI.
Loading Scripts and Styles:
All scripts and styles should be added from functions file and hooked with
wp_enqueue_*, don’t hardcode them or include directly, like in header.php, footer.php, etc.
Hardcoding Document Title:
Themes should not hardcode the title let WordPress handle it instead via
add_theme_support( 'title-tag' );.