We're adding custom CSS and JavaScript files to WordPress core blocks. Modify any block.json with simple PHP to load your own custom CSS and JavaScript in Gutenberg.
00:00:00 Introduction
00:01:28 Registering custom JavaScript for a block
00:02:50 How to filter Block.json
00:06:44 Registering custom CSS for a block
00:09:53 Using Query Monitor to debug assets
00:10:41 Other uses for custom block assets