Description of API specific to the WordPress plugin edition of Pinegrow.
Introduced in version 1.0.12
$styles = apply_filters('pinegrow_editor_styles', $styles);
$scripts = apply_filters('pinegrow_editor_scripts', $scripts);
$styles and $scripts are arrays of relative or absolute urls.
These filters will let you load custom CSS and JS files in the Pinegrow editor. JS files can follow PG standard plugin format as described on Developers | Pinegrow Web Editor.