Open source we use

Compilers, bundlers, linters, and test runners that turn our source into the product you use. Our largest category, almost all MIT or Apache-2.0.

• @babel/parserMIT
  Parses JavaScript source into an abstract syntax tree
• @babel/runtimeMIT
  Shared runtime helpers for Babel-compiled code
• @babel/traverseMIT
  Traverses and modifies JavaScript abstract syntax trees
• @babel/typesMIT
  Utility library for building AST nodes
• @changesets/changelog-githubMIT
  Generates GitHub changelog entries linking commits, PRs, and users
• @changesets/cliMIT
  Manages package versioning and publishing across the monorepo
• @graphql-codegen/coreMIT
  Generates code from GraphQL schemas
• @graphql-codegen/typescriptMIT
  Generates TypeScript types from GraphQL schemas
• @graphql-tools/mergeMIT
  Merges GraphQL type definitions and resolvers
• @graphql-tools/schemaMIT
  Builds and manipulates GraphQL schemas
• @inquirer/checkboxMIT
  Interactive checkbox prompt for CLI
• @inquirer/inputMIT
  Interactive text input prompt for CLI
• @jercle/yargonautApache-2.0
  Styles CLI output with colors and fonts
• @redocly/cliMIT
  CLI for linting and bundling OpenAPI docs
• @types/expressMIT
  TypeScript type definitions for Express
• @types/pluralizeMIT
  TypeScript type definitions for pluralize
• @vitejs/plugin-reactMIT
  Vite plugin enabling React in admin builds
• autoprefixerMIT
  Add vendor prefixes to CSS rules
• boxenMIT
  Draw boxes in the terminal
• chalkMIT
  Terminal string color styling
• chokidarMIT
  Cross-platform file watching
• ci-infoMIT
  Detect the current CI environment
• commanderMIT
  Build command-line interfaces
• configstoreBSD-2-Clause
  Persist config without managing file paths
• dotenvBSD-2-Clause
  Load environment variables from .env files
• dotenv-expandBSD-2-Clause
  Expand variables within dotenv values
• execaMIT
  Run external processes from Node
• find-yarn-workspace-rootApache-2.0
  Locate the root of a yarn workspace
• get-portMIT
  Find an available network port
• hosted-git-infoISC
  Parse metadata from git repository URLs
• import-fromMIT
  Import a module from a given path
• inquirerMIT
  Interactive command-line prompts
• is-dockerMIT
  Detect if running inside Docker
• magic-stringMIT
  Modify strings and generate sourcemaps
• oraMIT
  Terminal loading spinner
• picocolorsISC
  Tiny terminal output color formatting
• postcssMIT
  Transforms CSS with JavaScript plugins
• promptsMIT
  Lightweight interactive command line prompts
• terminal-linkMIT
  Creates clickable terminal links
• tsconfig-pathsMIT
  Resolves modules using tsconfig path aliases
• verdaccioMIT
  Lightweight private npm proxy registry
• viteMIT
  ESM-powered web dev build tool
• wait-onMIT
  Waits for files, ports, or resources
• webpackMIT
  Module bundler for browser code
• yargsMIT
  Command-line argument parser

The building blocks of the admin dashboard and storefront: component primitives, styling engines, and design tokens.

• @ariakit/reactMIT
  Accessible React UI component toolkit for the admin
• @base-ui/reactMIT
  Headless React component library for the landing site
• @dnd-kit/coreMIT
  Drag-and-drop primitives for admin interfaces
• @dnd-kit/sortableMIT
  Sortable list preset for drag-and-drop reordering
• @dnd-kit/utilitiesMIT
  Shared utilities for drag-and-drop components
• @headlessui/reactMIT
  Unstyled accessible React UI components for the storefront
• @hookform/error-messageMIT
  Renders form validation error messages in React
• @medusajs/iconsMIT
  Icon set used throughout the admin dashboard
• @medusajs/uiMIT
  React component library the admin dashboard is built on
• @medusajs/ui-presetMIT
  Tailwind preset carrying the admin's design tokens
• @radix-ui/react-accordionMIT
  Accessible accordion component for React
• @radix-ui/react-dialogMIT
  Accessible modal dialog primitive for React
• @radix-ui/react-dismissable-layerMIT
  Dismissable overlay layer primitive for React
• @tailwindcss/formsMIT
  Form element styling reset for Tailwind
• @tanstack/react-tableMIT
  Headless data-table building for React
• @tanstack/react-virtualMIT
  Virtualized rendering of large lists
• @tiptap/extension-imageMIT
  Image support for Tiptap rich text editor
• @tiptap/extension-linkMIT
  Link support for Tiptap rich text editor
• @tiptap/pmMIT
  ProseMirror wrapper for Tiptap editor
• @tiptap/reactMIT
  React components for Tiptap rich text editor
• @tiptap/starter-kitMIT
  Default extension bundle for Tiptap editor
• @uiw/react-json-viewMIT
  JSON viewer component for React
• class-variance-authorityApache-2.0
  Compose variant-based CSS class names
• clsxMIT
  Conditionally build className strings
• cmdkMIT
  Command menu component for React
• copy-to-clipboardMIT
  Copy text to the clipboard
• cvaApache-2.0
  Compose variant-based CSS class names
• embla-carousel-autoplayMIT
  Autoplay plugin for Embla carousel
• embla-carousel-reactMIT
  Lightweight React carousel with swipe support
• lucide-reactISC
  Icon library for React
• motionMIT
  Animation library for JavaScript and React
• prism-react-rendererMIT
  Renders highlighted Prism output in React
• prismjsMIT
  Lightweight syntax highlighting library
• radix-uiMIT
  Accessible unstyled React UI primitives
• react-ariaApache-2.0
  Accessible React UI hooks and components
• react-country-flagMIT
  Renders country flag components in React
• react-currency-input-fieldMIT
  React input for currency and number formatting
• react-hook-formMIT
  Form state management for React
• react-statelyApache-2.0
  State management for React UI components
• shadcnMIT
  Adds prebuilt UI components to apps
• sonnerMIT
  Toast notification component for React
• survey-coreMIT
  Framework-independent core for JSON-based forms
• survey-react-uiMIT
  React renderer for dynamic JSON-based forms
• tailwind-mergeMIT
  Merges Tailwind classes without conflicts
• tailwindcssMIT
  Utility-first CSS framework
• tailwindcss-animateMIT
  Tailwind plugin for animations
• tailwindcss-radixMIT
  Tailwind utilities for styling Radix component state
• tw-animate-cssMIT
  Tailwind v4 animation utilities replacement

Small, focused helpers for dates, types, object handling, and the everyday plumbing that shows up across the codebase.

• @onboardjs/coreMIT
  Headless logic for dynamic onboarding flows
• awilixMIT
  Dependency injection container
• bignumber.jsMIT
  Arbitrary-precision decimal arithmetic for money math
• date-fnsMIT
  Modern date manipulation utilities
• fast-json-stable-stringifyMIT
  Deterministic JSON stringification
• lodashMIT
  Modular JavaScript utility helpers
• lodash.debounceMIT
  Debounce function calls
• lodash.isequalMIT
  Deep equality comparison
• lodash.memoizeMIT
  Memoize function results
• lodash.mergewithMIT
  Deep merge objects with a customizer
• meantMIT
  Suggest did-you-mean corrections for strings
• nanoidMIT
  Tiny secure unique string ID generator
• node-emojiMIT
  Emoji lookup and parsing for Node
• openMIT
  Opens URLs, files, and executables cross-platform
• outdentMIT
  Removes leading indentation from template literals
• pluralizeMIT
  Pluralizes and singularizes words
• remove-trailing-slashMIT
  Removes trailing slashes from strings
• resolve-cwdMIT
  Resolves module path from working directory
• server-onlyMIT
  Marker preventing module use outside server components
• signal-exitISC
  Fires events when a process exits
• slugifyMIT
  Converts strings into URL slugs
• ts-dedentMIT
  Trims indentation from multi-line strings
• ulidMIT
  Sortable unique identifier generator
• uuidMIT
  Generates RFC4122 UUIDs
• xxhash-wasmMIT
  WebAssembly xxHash hashing implementation

Reading, writing, and transforming files and structured data such as CSV, JSON, and archive formats.

• csv-parseMIT
  Stream-based CSV parser
• delMIT
  Delete files and directories
• fdirMIT
  Fast directory crawler and globbing
• fs-exists-cachedISC
  Cached file existence checks
• fs-extraMIT
  Extended filesystem methods beyond Node fs
• globISC
  Match file paths using glob patterns
• is-valid-pathMIT
  Check that a file path is valid
• json-2-csvMIT
  Convert between JSON and CSV with nesting
• multerMIT
  Handle multipart form-data file uploads
• openapi3-tsMIT
  TypeScript models for OpenAPI 3 specs
• qsBSD-3-Clause
  Query string parser with nesting and arrays
• swagger-inlineISC
  Generates OpenAPI definitions from inline comments

Clients and servers that move requests between the storefront, the admin, our backend, and outside services.

• axiosMIT
  Promise-based HTTP client for browser and Node
• axios-retryApache-2.0
  Retry failed axios requests
• compressionMIT
  HTTP response compression middleware
• cookie-parserMIT
  Parse HTTP request cookies
• expressMIT
  Minimalist web server framework
• fetch-event-streamMIT
  Server-sent event streaming over fetch
• gotMIT
  HTTP request library for Node
• graphqlMIT
  GraphQL query language and runtime
• node-fetchMIT
  Brings Fetch API to Node.js
• path-to-regexpMIT
  Converts route paths to regular expressions
• request-ipMIT
  Retrieves a request's IP address

Error tracking, structured logs, and tracing so we can see what the platform is doing in production and fix it fast.

• @opentelemetry/apiApache-2.0
  Public API for OpenTelemetry instrumentation
• @opentelemetry/instrumentation-pgApache-2.0
  Traces PostgreSQL queries via OpenTelemetry
• @opentelemetry/resourcesApache-2.0
  Defines resource metadata for OpenTelemetry
• @opentelemetry/sdk-nodeApache-2.0
  OpenTelemetry SDK for Node.js telemetry
• @opentelemetry/sdk-trace-nodeApache-2.0
  Automatic tracing telemetry for Node.js apps
• @sentry/nextjsMIT
  Error and performance monitoring for Next.js
• @sentry/nodeMIT
  Error and performance monitoring for the backend
• @sentry/reactMIT
  Error and performance monitoring for the admin
• morganMIT
  HTTP request logging middleware
• stack-traceMIT
  Gets V8 stack traces as call objects
• winstonMIT
  General-purpose logger for Node

The data layer: Postgres drivers, query builders, and the object-relational mapping that backs every order and product.

• @aws-sdk/client-dynamodbApache-2.0
  DynamoDB client for storing and querying NoSQL data
• @mikro-orm/cliMIT
  Command line tooling for MikroORM
• @mikro-orm/coreMIT
  TypeScript ORM core for Node.js
• @mikro-orm/knexMIT
  Knex query builder driver for MikroORM
• @mikro-orm/migrationsMIT
  Schema migration support for MikroORM
• @mikro-orm/postgresqlMIT
  PostgreSQL driver for MikroORM
• pgMIT
  PostgreSQL client for Node.js
• pg-connection-stringMIT
  Parses PostgreSQL connection strings
• pg-godMIT
  Creates and drops PostgreSQL databases

Redis-backed caching and background job queues that keep pages quick and offload slow work from the request path.

• @neshca/cache-handlerMIT
  Self-hosting cache handler for Next.js
• bullmqMIT
  Redis-backed job and message queue
• connect-redisMIT
  Redis-backed session store for Express
• cron-parserMIT
  Parse crontab schedule expressions
• ioredisMIT
  Full-featured Redis client for Node
• node-cacheMIT
  Simple in-memory caching for Node
• node-scheduleMIT
  Cron-like job scheduler for Node
• redisMIT
  Redis client for storefront caching

Schema definitions and runtime checks that validate input at every system boundary before it reaches our logic.

• @hookform/resolversMIT
  Connects React Hook Form to schema validators like Zod
• @readme/json-schema-ref-parserMIT
  Parses and dereferences JSON Schema refs
• @readme/openapi-parserMIT
  Parses and validates OpenAPI specs
• validatorMIT
  String validation and sanitization
• zodMIT
  TypeScript-first schema validation with type inference
• zod-validation-errorMIT
  Formats Zod errors into readable messages

The core rendering and routing layer behind the storefront and admin, including React and Next.js.

• @tanstack/react-queryMIT
  Manages caching and syncing of server data
• nextMIT
  React framework powering storefront and landing pages
• reactMIT
  Library for building user interfaces
• react-domMIT
  React renderer for the DOM
• react-helmet-asyncApache-2.0
  Thread-safe document head management for React
• react-router-domMIT
  Declarative routing for React web apps

Image resizing, format conversion, and media handling for product photos and store assets.

• @svgr/coreMIT
  Transforms SVG files into React components
• @svgr/plugin-jsxMIT
  Transforms SVG into JSX for SVGR
• @svgr/plugin-prettierMIT
  Formats SVGR output using Prettier
• @svgr/plugin-svgoMIT
  Optimizes SVG output for SVGR
• sharpApache-2.0
  High performance image processing for Node
• threeMIT
  JavaScript 3D graphics library

Password hashing, token signing, and the cryptographic primitives that protect accounts and sessions.

• bcryptjsMIT
  Password hashing with bcrypt in pure JS
• corsMIT
  Cross-origin resource sharing middleware
• express-sessionMIT
  Session middleware for Express
• jsonwebtokenMIT
  Sign and verify JSON Web Tokens
• react-jwtMIT
  Decodes JSON web tokens in React
• scrypt-kdfMIT
  Scrypt key derivation function

SDKs for the payment providers merchants connect, including Stripe, Razorpay, and Dodo Payments.

• @stripe/react-stripe-jsMIT
  React components for Stripe Elements checkout
• @stripe/stripe-jsMIT
  Loads Stripe.js for client-side payments
• dodopaymentsApache-2.0
  Official SDK for Dodo Payments API
• razorpayMIT
  Official Node SDK for Razorpay payments
• stripeMIT
  Stripe API client wrapper

Sending transactional email and push notifications to merchants and their customers.

• @aws-sdk/client-snsApache-2.0
  AWS SNS client for sending push and SMS notifications
• @sendgrid/mailMIT
  Sends transactional email via SendGrid
• nodemailerMIT-0
  Sends email from Node applications
• web-pushMPL-2.0
  Web push notification library for Node

Translation, locale handling, and formatting so stores can run in more than one language and currency.

• i18nextMIT
  Internationalization framework
• i18next-browser-languagedetectorMIT
  Detect user language in the browser
• i18next-http-backendMIT
  Load translation resources over HTTP
• react-i18nextMIT
  Internationalization for React using i18next

S3-compatible clients for storing product files, digital downloads, and backups in object storage.

• @aws-sdk/client-s3Apache-2.0
  S3 client for storing and retrieving product files
• @aws-sdk/lib-storageApache-2.0
  Handles multipart uploads to S3 object storage
• @aws-sdk/s3-request-presignerApache-2.0
  Generates presigned S3 URLs for secure file access

Map rendering and geocoding for address entry, shipping zones, and location-based features.

• leafletBSD-2-Clause
  Mobile-friendly interactive maps library
• react-leafletHippocratic-2.1
  React components for Leaflet maps

Full-text and faceted search over product catalogs.

• match-sorterMIT
  Best-match sorting and filtering of arrays

Carrier integration for rates, labels, and tracking through providers like ShipEngine.

• shipengineApache-2.0
  Official ShipEngine SDK for shipping operations

Product analytics that show how merchants and shoppers actually move through the platform.

• posthog-jsSEE LICENSE IN LICENSE
  Captures usage events and sends to PostHog