A standalone HTTP Range header parser/normalizer. It handles multi-range, open-ended, and suffix ranges, validates satisfiability against resource size, and normalizes into concrete byte ranges. Clean, dependency-light, and directly reusable in any static file server or partial-content implementation.

A streaming multipart/form-data parser built around web streams and Uint8Array primitives. It enforces part/file/total size limits and handles malformed headers, with separate Node/Bun/Deno adapters. This is a high-quality, portable parser that can be extracted for any Fetch-based server.

A typed route pattern parser, matcher, and href generator with compile-time parameter extraction. It supports specificity ranking, pattern joining, and safe matching limits. Though designed for Remix, it is a self-contained TypeScript utility suitable for any URL router.

A composable middleware pipeline with typed context keys and tuple-preserving type inference. It demonstrates a clean, framework-agnostic pattern for order-sensitive request middleware and can be extracted as a standalone building block for Fetch-based servers.

A migration journal store that records applied migrations with SHA-256 checksums and batch tracking. It supports forward/down migrations, dry-run, and rollback semantics. This is a reusable database-migration primitive independent of any specific database driver.

A style ownership model for CSS-in-JS that pins server-adopted style rules and refcounts client-inserted rules, keeping styles idempotent across islands, frames, and HMR reloads. This is a non-obvious solution to a hard SSR/hydration problem and is reusable in any component runtime that injects styles.