A walkthrough of MasonryKit and the reasoning behind its three packages: @masonrykit/core for pure math, @masonrykit/browser for DOM utilities, and @masonrykit/react for the hook. Plus the abstractions in each layer worth borrowing for your own libraries.
How to build 404, 403, and 500 pages in Phoenix LiveView that do not feel like afterthoughts. Uses Ash exceptions and the built-in Phoenix conventions so the failure paths read like the rest of your product.