The missing standard library for TypeScript, for writing production-grade software.
A TypeScript frontend framework, built on Effect and architected like Elm
Effect TS ORM for DynamoDB — schema-driven entity modeling, single-table design, composite keys, transactions, and Stream-based pagination
Domain encapsulation and domain-event persistence toolkit for TypeScript with pure, neverthrow, and Effect implementations.
Pure Effect Schema-driven entity/aggregate modeling and relationship derivation for effect-dynamodb — importable without @aws-sdk
Backend-agnostic service contracts, schemas, and errors for ceno — a type-safe CouchDB client built on Effect
Liquid glass effect for React using SVG filters with chromatic aberration and frosted blur.
Native Effect client library for Inngest - build durable, type-safe workflows
An Effect replacement to the native JavaScript Intl API: date and number parsing/formatting, sscanf/sprintf templating, number rounding
Effect interop for unthrown
JavaScript Reverb effect class
JavaScript library for applying a glitch effect to a canvas element
An Effect library that produces the string representation of any JavaScript value. Similar to util.inspect but with extensive configurability: treeifying, coloring, sorting, filtering, choosing what to display and how to display it... Handles all Effect
Collection of utility modules extending the official Effect library: simple yet efficient pattern matching, cycle-safe tree module, mutable caching with optional bounded capacity and optional time-to-live, and diverse useful stuff
Stable Standard Schema fingerprint strategy for Effect Schema — StitchAPI ADR 0004 cache invalidation.
Type-safe routing for Effect
Effect integration for SvelteKit: load/action/endpoint wrappers, remote functions, an effectKit() Vite plugin, and an Effect HTTP deployment adapter
Effect integration for Svelte 5 runes
Scaffolding CLI for full-stack TypeScript apps built on Effect
In-memory file system for Effect v4. Great for mocking, tests, simulating files and keeping files in memory. Duh.