Implement post-type-specific block restrictions by checking both for the existence of post data and validating the post object type before applying restrictions.
Verify the editor context contains post data and that it’s a valid WP_Post instance to avoid errors in contexts where post data isn’t available (like the site editor).
Filter blocks by category or other criteria once you’ve confirmed the correct post type context. This enables different block sets for posts versus pages or custom post types.
Early returns prevent code execution in non-matching contexts, ensuring restrictions only apply where intended while maintaining default behavior elsewhere.