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JSR
The open-source package registry for modern JavaScript and TypeScript

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Packages

Featured

  1. @kysely/kysely
    A type-safe TypeScript SQL query builder
  2. @es-toolkit/es-toolkit
    A modern JavaScript utility library that's 2-3 times faster and up to 97% smaller—a major upgrade to lodash.
  3. @zod/zod
    TypeScript-first schema declaration and validation library with static type inference
  4. @punkpeye/fastmcp
    A TypeScript framework for building MCP (Model Context Protocol) servers.
  5. @rabbit-company/web
    High-performance web framework
  6. @campfire/core
    Lightweight library that works with vanilla DOM elements and provides fine-grained reactivity + utils for building websites.
  7. @am/neuralnetwork
    A simple neural network library for JavaScript and TypeScript.
  8. @sigmasd/jsr-mcp
    A Model Context Protocol (MCP) server that provides access to JSR (JavaScript Registry) module documentation.
  9. @iuioiua/redis
    Fast, lightweight Redis client built upon the Web Streams API.
  10. @img/png
    A image encoder/decoder for the PNG format

Recently updated

  1. @eunier/env-deno
    1.1.0
  2. @defai-digital/ax-code-sdk
    2.2.3
  3. @zanix/cli
    2.0.9-alpha.3
    The Zanix Framework CLI is a powerful command-line interface (CLI) tool designed to facilitate the development and management of Zanix applications.
  4. @monsieur-nico/textconvert
    2.3.0
    Public library to convert text into many conventions and formats.
  5. @sparr/find-itch-games
    0.1.0
  6. @eunier/env-deno
    1.0.1
  7. @o-industrial/azure-iot-pack
    0.0.271-integration
  8. @o-industrial/oi-core-pack
    0.0.471-integration
    The core capabilities for the flow ui
  9. @o-industrial/azure-iot-pack
    0.0.270-integration
  10. @monsieur-nico/textconvert
    2.2.1
    Public library to convert text into many conventions and formats.

New to JSR

  1. @sparr/find-itch-games
  2. @eunier/env-deno
  3. @injurka/vault-locator
  4. @injurka/skills-installer
  5. @injurka/obsidian-importer
  6. @zweiundeins/cashctrl-mcp
  7. @optique/testing
    Testing support for Optique command-line interfaces
  8. @eunier/commander-deno
  9. @eunier/fs-deno
  10. @eunier/logger-deno

Why JSR?

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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.

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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.

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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.

Still curious about JSR?

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