List Virtualization - Renders only the visible portion of a large scrollable list, dramatically reducing DOM nodes and improving performance.
Global State Managers - Manages shared application state in a single store accessible by any component.
Dynamic Item Layout Syncing - Adjusts each item's size on the fly as content loads or changes so the scroll container always knows the true layout.
Dynamic Element Measurers - Automatically adjusts item dimensions as content changes, supporting fixed, variable, and dynamic measurement modes.
Dynamic Item Size Calculators - Measures each item on the fly and adjusts scroll calculations for content with varying heights or widths.
Virtualized List Managers - Renders only the visible portion of a long list, grid, or table so the browser stays responsive even with thousands of items.
Virtualized Data Grids - Renders only visible cells in a two-dimensional grid, keeping the DOM small regardless of total rows and columns.
Bidirectional Virtualizers - Provides a virtualizer that works in both vertical and horizontal directions for grid layouts.
Reverse Sequence Rendering - Renders items appended to the top of a list while maintaining scroll position for real-time feeds like chat and logs.
Reactive API Endpoints - Creates backend routes that handle requests and return data, running alongside the frontend application.
Route Lifecycle Handlers - Attaches pending, error, not-found, and code-splitting states directly to individual route definitions.
Cache and Mutation Inspectors - Reads live data from cache, route matches, and mutation queues through dedicated panels.
Data Fetching & Caching - Provides a client-side cache that stores fetched server data and returns it instantly on subsequent requests.
Server State Fetching - Fetches data from a remote source and exposes loading, error, and success states to the UI.
Full Page Server Rendering - Generates complete HTML on the server for each request to improve initial load performance.
Full-Stack Frameworks - Compiles both client and server code into optimized bundles for full-stack deployment.
Pre-Render Data Loaders - Runs route loaders in parallel and caches results to provide typed data before components render.
Server-Side Endpoints - Ships a mechanism for defining server-side API routes alongside frontend code with type-safe communication.
Type-Safe API Clients - Invokes type-safe remote procedures directly from client code with automatic serialization and error handling.
Agentic Execution Loops - Executes a multi-step conversation where the AI calls tools, receives results, and continues until a stopping condition is met.
Streaming Chat Responses - Sends AI-generated text to the client incrementally as it is produced, enabling real-time chat interfaces.
Human Approval - Implements a human-in-the-loop approval step that pauses tool execution for user review.
LLM Provider Adapters - Switches between multiple LLM providers through a unified adapter interface.
Human-in-the-Loop Approvals - Injects a human-in-the-loop approval step into a workflow, pausing until the approval is resolved via the event log.
Idempotent Workflow Steps - Wraps side effects in named, idempotent steps so the engine can replay them safely and skip completed work on resume.
Build and Bundling - Produces separate optimized builds for client and server code using Vite or Rsbuild.
Schema and Type Utilities - Ships schema utilities for defining typed collection schemas with runtime validation and type inference.
Transactional Data Mutations - Supports building complex mutations with transactional optimistic updates and full lifecycle control.
Custom Collection Interfaces - Exposes an interface for implementing custom collection types to integrate with the reactive store.
Execution Throttling - Limits how often a function can fire within a time window, smoothing out rapid repeated calls.
Framework DevTools - Ships a devtools shell that mounts across React, Vue, Solid, and other frameworks without rewriting panels.
Framework-Specific Hooks - Reduces boilerplate with framework-specific hooks for debounced callbacks and throttled values.
Monorepo Package Builds - Generates consistent module formats, type declarations, and export configurations for every package in a monorepo.
Pre-Release Validation - Runs type checks, linting, tests, and publication validation before a release is allowed to proceed.
Package Publishing Pipelines - Versions, tags, and publishes packages to npm and GitHub using a standardized release workflow.
Task Queues - Orders function execution using FIFO, LIFO, or priority queues with configurable concurrency.
Workflow Schedulers - Registers workflows to run on a fixed timetable using the runtime's scheduler and timer primitives.
Execution Rate Limiters - Restricts how many times a function can fire over a set period using fixed or sliding windows.
Execution State Controllers - Provides start, stop, and persistence controls for queues and rate limiters with reactive state.
Workflow Signal Handling - Implements named signals that can be sent into running workflows to resume or control execution.
Durable Workflow Execution Engines - Executes an async function that pauses, persists its state to an event log, and resumes across process restarts without losing progress.
Execution Pausing - Pauses execution by throwing an internal sentinel and resumes by replaying the event log to reconstruct state.
Function Execution Utilities - Delays function execution until after a period of inactivity, ensuring only the final call runs.
Configurable Batch Triggers - Groups multiple operations into batches triggered by time, size, or custom conditions.
Bottom-Anchored Lists - Keeps the scroll position pinned to the bottom of a list as new items are added.
Horizontal Lane Virtualizers - Ships a horizontal virtualizer for lane-based layouts such as calendar rows and kanban boards.
Keyboard Shortcut Managers - Registers hotkeys with automatic default prevention, input filtering, and conflict detection.
Scroll Behavior Control - Allows replacing the default scroll mechanism with a custom function for smooth scrolling effects.
Scroll-to-Index Mappers - Provides programmatic scrolling to any item by its index with configurable alignment.
End-of-Stream Auto-Scrolling - Pins the viewport to the end of a dynamic list for chat and live-updating log UIs.
Imperative Scroll Controllers - Provides imperative control to scroll the viewport to a given offset or index with alignment.
Index-Based Scroll Jumpers - Provides imperative scrolling to any row, column, or cell by index with alignment options.
Scrolling Performance Optimizations - Optimizes scroll handling for iOS Safari and other mobile browsers to eliminate jank and enable smooth momentum scrolling.
Prepend-Stable Scroll Maintainers - Maintains scroll position when items are prepended to the top of a list, preventing disruptive jumps.
Progressive Page Streamers - Sends page content to the browser progressively as it becomes available, so users see parts of the page before the full render finishes.
Progressive Page Streamers - Streams page content to the browser progressively so users see parts before the full render.
Isomorphic Tool Definitions - Declares a tool's input/output schema once and provides separate server or client implementations for AI runtime invocation.
Route Preloaders - Starts loading route data early when the user hovers or scrolls, making the next page feel instant.
Context Injection Hooks - Provides middleware hooks for injecting shared data into the request context and page response.
Schema-Based URL Validators - Ships schema-driven validation and serialization for URL search parameters with full type inference.
Real-time Sync Engines - Streams real-time changes from databases or APIs into client-side collections using sync engines.
