Logos DXFocused TypeScript utilities for building JS apps on any runtime

A rational developer experience

Utils

Error tuples, retry, circuit breakers, rate limiting, runtime validation, and safe data operations. The foundation layer.

Fetch

Native fetch with retries, timeouts, lifecycle hooks, streaming, and chainable response parsing. No dependencies.

Observer

Typed event system with regex subscriptions, async iteration, priority queues, and component observation. Built for debugging.

Storage

Type-safe persistence with pluggable drivers, scoped prefixes, and event hooks. Works with any storage interface.

DOM

Framework-free DOM manipulation with type-safe CSS, attributes, behaviors, and viewport utilities. Selector caching built in.

Localize

Lightweight i18n with ICU message syntax, plural rules, scoped translations, and a CLI extractor. No framework required.

State Machine

Finite state machines with guards, async invoke, persistence, and wildcard listeners. Type-safe transitions throughout.

React

Context providers and hooks for Observer, Fetch, Storage, Localize, and State Machine. Full type inference with subpath imports.

AI Skills

bash

npx skills add logosdx/monorepo --skill logosdx

Born out of the frustration of rebuilding the same retry logic across projects, debugging invisible error paths in production, wrestling with runtime differences between Node, browsers, and edge workers — and watching dependency trees balloon with packages that do one thing each.

LogosDX is the toolkit I kept wishing existed: resilient by default, runtime-agnostic by design, and zero external dependencies. Every package works independently or together, following the same patterns — so you learn them once and use them everywhere.