Packages
Featured
- @kysely/kyselyA type-safe TypeScript SQL query builder
- @es-toolkit/es-toolkitA modern JavaScript utility library that's 2-3 times faster and up to 97% smaller—a major upgrade to lodash.
- @zod/zodTypeScript-first schema declaration and validation library with static type inference
- @punkpeye/fastmcpA TypeScript framework for building MCP (Model Context Protocol) servers.
- @rabbit-company/webHigh-performance web framework
- @campfire/coreLightweight library that works with vanilla DOM elements and provides fine-grained reactivity + utils for building websites.
- @am/neuralnetworkA simple neural network library for JavaScript and TypeScript.
- @sigmasd/jsr-mcpA Model Context Protocol (MCP) server that provides access to JSR (JavaScript Registry) module documentation.
- @iuioiua/redisFast, lightweight Redis client built upon the Web Streams API.
- @img/pngA image encoder/decoder for the PNG format
Recently updated
- @baxyz/sqlite-readerRead-only SQLite3 binary parser: extract rows from a table given a raw file buffer. Zero dependencies, no native SQLite.0.3.1
- @baxyz/mozlz4Encode and decode Mozilla's mozLz40 format (LZ4 variant used by Firefox and Zen Browser). Zero dependencies.0.2.5
- @denext/docs-corpusDocs for Denext's MCP server4.11.5
- @spy4x/billing1.102.0
- @spy4x/server1.102.0
- @spy4x/realtime1.102.0
- @spy4x/caldav1.102.0
- @spy4x/integrations1.102.0
- @spy4x/tasks1.102.0
- @spy4x/platform1.102.0
New to JSR
- @baxyz/sqlite-readerRead-only SQLite3 binary parser: extract rows from a table given a raw file buffer. Zero dependencies, no native SQLite.
- @baxyz/mozlz4Encode and decode Mozilla's mozLz40 format (LZ4 variant used by Firefox and Zen Browser). Zero dependencies.
- @lechcher/gflow-cli
- @g9wp/dom-utils
- @leonidalekseev/git-repo-cleanerInteractive CLI that removes AI-assistant artifacts (Claude Code, Cursor, Copilot, AGENTS.md…) from git history: files, trailers, bot authors.
- @fitv/freeimagetovideo
- @neonbyte/tuiInline terminal UI library for Deno, Node and Bun that keeps your scrollback.
- @thecavillgroup/canva-textmetrics
- @thecavillgroup/canva-markup
- @baxyz/folioscopeFlip through your prototypes: a web component that plays the interactive prototype of a .fig, .sketch or .penpot file, baked at build time or in the browser. A player, not a viewer.
Why JSR?
Made for TypeScript & ESM
JSR is designed for TypeScript. You publish TypeScript source, and JSR handles generating API docs, .d.ts files, and transpiling your code for cross-runtime compatibility.
JSR packages are distributed as web-standard ECMAScript modules.
Builds on npm
JSR isn't a replacement for the npm registry; it's a superset of npm.
JSR modules can be used with any JavaScript package manager, and in any project with a node_modules folder.
Works with any runtime
JSR modules can be used in Node.js, Deno, Bun, Cloudflare Workers, and more.
Module authors can count on great editor support from strongly typed modules, without the need to transpile and distribute typings manually.
