99 primitives across 11 categories.

Animation

• presence — Utility to animate the presence of an element based on the existence of data or lack thereof.
• raf — Primitive that facilitates RAF functionality
• spring — Primitive that creates spring physics functions.
• transition-group — Reactive primitives for implementing transition effects
• tween — Primitive that creates tween functions

Browser APIs

• broadcast-channel — Primitives to manage Broadcast Channel API
• clipboard — Primitives for reading and writing to clipboard.
• event-listener — Primitives to manage creating event listeners.
• event-props — Primitive to manage events in a reactive way.
• favicon — Reactive primitives for controlling the document favicon, including animated frame cycling and notification badges.
• fullscreen — Primitive that wraps the fullscreen API.
• geolocation — Primitives to query geolocation and observe changes.
• interaction — Primitive for detecting interactions outside a given element.
• mediastream — Primitives to work with media streams from microphones, cameras, and the screen
• mutation-observer — Primitive providing the ability to watch for changes made to the DOM tree.
• notification — Primitives for the browser Notifications API with reactive permission management
• permission — Primitive that wraps permission queries
• storage — Primitive that provides reactive wrappers for storage access
• timer — Primitives to manage timeout and interval
• upload — Primitives for uploading files.
• url — Reactive primitives covering Browser's location, URL and URLSearchParams interfaces.
• workers — Primitives that support creating Web Workers.

Control Flow

• context — Primitives simplifying or extending the Context API
• jsx-tokenizer — A primitive to tokenize your components to enable custom parsing.
• keyed — Control Flow primitives and components that require specifying explicit keys to identify or rerender elements.
• list — A List component, an alternative to For and Index.
• match — A template primitive example.
• range — Control Flow Primitives for number ranges: createNumericRange, mapRange, indexRange, repeat, and their JSX component counterparts.
• refs — Library of primitives, components and directives that help managing references to JSX elements.

Display & Media

• audio — Primitives to manage audio and single sounds.
• bounds — Primitives for tracking HTML element size and position on screen as it changes.
• devices — Reactive primitives for enumerating and filtering media input/output devices (microphones, speakers, cameras).
• filesystem — A primitive for convenient file system access.
• idle — A primitive to observe the user's idle status and react to its changes.
• intersection-observer — Primitives to support using the intersection observer API.
• media — Primitives for media query and device features
• page-utilities — Primitives for page visibility and navigation blocking
• resize-observer — Reactive primitives for observing resizing of HTML elements.
• sensors — Primitives for device sensors: accelerometer, gyroscope, compass, battery, and generic Sensor API.
• styles — Collection of reactive primitives focused on styles.
• video — Primitives to manage HTML video playback.

Forms

• form — Reactive form primitive with per-field signals, sync/async validation, validateOn control, and DOM binding.

Inputs

• a11y — Accessibility primitives — labeled field groups, ARIA graph helpers, and more.
• active-element — A reactive document.activeElement. Check which element is currently focused.
• focus — Primitives for autofocusing HTML elements and trapping focus within a container
• input-mask — input masking event primitive.
• keyboard — A library of reactive promitives helping handling user's keyboard input.
• list-state — Keyboard navigable list state management primitives
• mouse — A collection of primitives that capture current mouse cursor position, and help to deal with common related usecases.
• pointer — A collection of primitives, giving you a nicer API to handle pointer events in a reactive context.
• scroll — Reactive primitives to react to element/window scrolling, and to prevent scroll outside of a given element.
• selection — selection primitive.

Network

• connectivity — A navigator.onLine signal.
• cookies — Reactive, signal-based cookie primitives for isomorphic use on client and server
• fetch — Primitive that wraps fetch requests
• graphql — Primitive that generates a client and reactive GraphQL queries
• sse — Primitives for Server-Sent Events (SSE) using the browser's EventSource API.
• websocket — Primitive to create a web socket connection

Reactivity

• async — A collection of primitives for asynchronous handling.
• controlled-signal — Reactive signals that support both controlled (externally managed) and uncontrolled (internally managed) state — a pattern commonly used in headless UI components.
• db-store — A reactive store backed by a database, kept in sync via realtime change events.
• deep — Primitives for tracking and observing nested reactive objects.
• destructure — Primitives for destructuring reactive objects – like props or stores – or signals of them into a separate accessors updated individually.
• immutable — Primitive for rectifying immutable values and dealing with immutability.
• lifecycle — Package providing extra layer of lifecycle primitives.
• map — The Map & WeakMap data structures as a reactive signals.
• memo — Collection of custom memo primitives. They extend createMemo functionality while keeping the usage similar.
• mutable — A primitive for creating a mutable store, an alternative to createStore.
• resource — Utilities for composing createResource fetchers: abortable requests, caching, retrying, and aggregation.
• rootless — A collection of helpers that aim to simplify using reactive primitives outside of reactive roots, and managing disposal of reactive roots.
• set — Reactive Set and WeakSet primitives with set-algebra operations: union, intersection, difference, and symmetricDifference.
• signal-builders — A collection of chainable and composable reactive signal calculations, aka Signal Builders.
• sortable — Reactive sorting primitives — comparators, reactive sort, sorted search/insert, and granular per-item rank tracking.
• state-machine — A primitive for creating reactive state machines.
• static-store — Primitives for creating small reactive objects that doesn't change their shape over time - don't need a proxy wrapper.
• trigger — A set of primitives based on signals, used to trigger computations.

Sensors

• orientation — Primitives to track screen orientation using the Screen Orientation API
• vibrate — Primitives to trigger and manage device vibration via the Vibration API

UI Patterns

• marker — A reactive primitive for marking matching parts of a string.
• masonry — Primitives for creating a reactive masonry layout.
• pagination — A primitive that creates all the reactive data to manage your pagination.
• virtual — A virtualized list component for performantly rendering lists with many elements

Utilities

• analytics — Primitives for analytics tracking with a plugin-compatible queue-based dispatch pipeline.
• controlled-props — The primitives in this package allow you to create controlls for component props.
• cursor — Primitives for setting CSS cursor property reactively.
• date — Collection of reactive primitives and utility functions, providing easier ways to deal with dates
• event-bus — A collection of primitives providing various features of a pubsub/event-emitter/event-bus.
• event-dispatcher — A primitive to dispatch component events.
• flux-store — Primitive to simplify the creation of global stores and the ability to access and mutate them.
• history — Primitives for managing undo/redo history.
• i18n — Library of primitives for providing internationalization support.
• platform — A set of const boolean variables identifying device and browser type.
• promise — Promised one-time watch for changes. Await a reactive condition.
• props — Library of primitives focused around component props.
• queue — Queue primitives — FIFO, priority, and concurrent task queues
• scheduled — Primitives for creating scheduled — throttled or debounced — callbacks.
• script-loader — Primitive to load scripts dynamically
• share — Primitives to help with sharing content on social media and beyond.
• utils — A bunch of reactive utility types and functions, for building primitives