JavaScript packages

Compares deprecations against a configuration object, and returns a compliant object and violations

A SMILES drawer and parser. Generate molecular structure depictions in pure JavaScript.

Simple and typesafe worker RPC.

Receive streaming file uploads on your local filesystem.

Breakpoints mixin pack for Seed

Get the 'src' value from any string containing a src="" (embed, iframe, html, etc).

Output Solidity contract sizes with Hardhat

Shared business logic for relayfile — file operations, ACL, queries, events, and writeback lifecycle

Moment.js template helpers Ember.js

Login session ensuring middleware for Connect.

Modern and scalable routing for Solid applications

DevExpress Reporting provides the capability to develop a reporting application to create and customize reports.

Wasm png optimiser supporting the browser. Repackaged from Squoosh App.

A Javascript utility library for working with native objects.

Helpers and utils for lit-html and lit-element.

A plugin for webpack that removes files and folders before and after compilation.

Gets form data via form.elements

compile json schema to typescript typings

convert a human readable duration string to ms

Fetch API adapter for Standard Server: transport-agnostic requests, responses, and streaming for browsers, workers, Deno, Bun, and any Fetch-based runtime

TypeScript SDK for relayfile — real-time filesystem for humans and agents

Message-based adapter for Standard Server: transport-agnostic requests, responses, and streaming over WebSocket, MessagePort, and custom peer transports

Makes CommonJS-incompatible modules browserifyable.

An ESnext spec-compliant `DisposableStack`, `AsyncDisposableStack`, `Symbol.dispose`, and `Symbol.asyncDispose` shim/polyfill/replacement that works as far down as ES3.

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An Angular library that implements the mediator pattern, providing a centralized way to handle requests with optional validation and execution pipelines.

Load module from string using require or import.

Agent 365 Tooling SDK for LangChain AI agents built with TypeScript/Node.js

Core visitors for the Codama framework

AES crypto native module for react-native

MongoDB-style object operators makes array manipulation easy: where/order/update/view

Detect the MIME type of a Buffer, Uint8Array, ArrayBuffer, ReadableStream, file path and file name, with async method.

Node.js client for the Tinify API. Tinify compresses your images intelligently. Read more at https://tinify.com.

Convert numbers to words - their written form.

ES Proposal spec-compliant shim for SuppressedError

Extract translatable keys from projects that uses Transloco

Elasticsearch Universal SDK for Searchkit

Microsoft Agent 365 Notifications SDK for AI agents built with TypeScript/Node.js

Library of associative containers; it implements TreeMap, TreeSet, TreeMultiMap and TreeMultiSet classes

ScrollArea component for react

JavaScript Ethereum Virtual Machine (EVM) implementation

XState Store for React

A SQL migration tool for SQL people

TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Supports MongoDB, MySQL, PostgreSQL and SQLite databases as well as usage with vanilla JavaScript.

TypeScript recursive conversion between optional (partial) and undefined properties.

Load up smartly, in one location, all of the GraphQL queries/mutations/subscriptions of your project

Wait the first event in a set of event emitters and event pairs, then clean up after itself.

Parses emails to remove replies and other potentially unwanted data

Medplum React Hooks Library

Markdown editor for vue3, developed in jsx and typescript, dark theme、beautify content by prettier、render articles directly、paste or clip the picture and upload it...