JSPM

Data Structures & Algorithms in JS

High-quality and essential Typescript data structures

Data-structures and algorithms implemented on TypeScript

Algorithms and data-structures implemented on JavaScript

Algorithms and data-structures implemented on JavaScript

Collection of essential data structures implemented in javascript

Data validation using immutable data structures

Algorithms and data-structures implemented on JavaScript

Data structures and algorithms implemented in JavaScript

XyPriss Security is an advanced JavaScript security library designed for enterprise applications. It provides military-grade encryption, secure data structures, quantum-resistant cryptography, and comprehensive security utilities for modern web applicatio

Library for manipulating normalized data structures.

Modern, high-performance data structures for JavaScript & TypeScript - inspired by Python's collections module

A Javascript library of simple data structures

A Javascript library of data structures and algorithms.

A data-structures and algorithms library for node and browser written in typescript. Inspired from C++ standard library

IOTA Pico Framework Data Structures and Helpers

A modern JavaScript & TypeScript standard template library (STL) for data structures and algorithms. Includes high-performance implementations of Stack, Queue, Deque, Linked List, Vector, Set, Map, Tree, Heap, and Graph — inspired by C++ STL. Designed for

Declarative JSON transformation engine that reshapes and maps complex data structures with nested resolution, type casting, recursion, and more. Ideal for APIs, SDKs, and frontend shaping.

Common data structures implementation for javascript

Data structures and algorithms written in JavaScript

XyPriss Security is an advanced JavaScript security library designed for enterprise applications. It provides military-grade encryption, secure data structures, quantum-resistant cryptography, and comprehensive security utilities for modern web applicatio

Given some data, jsesc returns the shortest possible stringified & ASCII-safe representation of that data.

Typesafe data structures for Javascript

Javascript lib for producing diffs of data structures and time-traveling with them

A collection of mostly common algorithms, data structures with visualizations and explanations.

Javascript data structures

Data structures, data types, and algorithms with superpowers! 💪

Client/server side PDF printing in pure JavaScript

JavaScript object query engine

Data structure and graph processing library written in modern JavaScript

Define a data property on an object. Will fall back to assignment in an engine without descriptors.

Fenrir is an assistant to prognosticate the future of a wolfpack using vanilla Javascript and data structures.

Get the byteOffset out of a DataView, robustly.

Get the byteLength out of a DataView, robustly.

Is this value a JS DataView? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

A small and mighty suite of data structures in JavaScript.

Min Heap

This library provides a simple way to define and serialize data structures (structs) with support for both regular fields and bitfields

A Node.js package providing advanced data structures and utility functions using native C.

JavaScript and TypeScript implementations for common data structures and algorithms.

A comprehensive JavaScript implementation of Min Heap and Max Heap data structures with practical utilities

usingbytes-dsa is comprehensive JavaScript library for common data structures and algorithms. This library is designed to be both educational and practical, providing implementations of fundamental data structures and algorithms that can be used in a vari

serialize objects to javascript

Comprehensive collection of type guards for JavaScript and TypeScript; Inspired by Elixir

IntegralUI Web - TreeGrid is a native Web Component that displays hierarchical data structures in multiple columns.

Parse front-matter from a string or file. Fast, reliable and easy to use. Parses YAML front matter by default, but also has support for YAML, JSON, TOML or Coffee Front-Matter, with options to set custom delimiters. Used by metalsmith, assemble, verb and

JS-DSA is a comprehensive collection of data structures and algorithms implemented in JavaScript. This project is designed to be a helpful resource for developers, students, and anyone interested in learning about data structures and algorithms through pr

A lightweight, powerful in-memory database for JavaScript/TypeScript applications with support for multiple data structures, relationships, transactions, and schema validation. Perfect for both browser and Node.js environments.

Meta-annotations for data structures in JavaScript

Get and robustly cache all JS language-level intrinsics at first require time

Python's deque data structure for JavaScript

Publish-subscribe data structures for JavaScript

Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.

`Object.defineProperty`, but not IE 8's broken one.

Robustly `.call.bind()` a function

`Object.getOwnPropertyDescriptor`, but accounts for IE's broken implementation.

A robust, ES3 compatible, "has own property" predicate.

Robust call-bound JavaScript intrinsics, using `call-bind` and `get-intrinsic`.

ES Object-related atoms: Object, ToObject, RequireObjectCoercible

A Javascript library for using classic Data Structures

ES2019 spec-compliant String.prototype.trimEnd shim.

Get the ArrayBuffer out of a DataView, robustly.

ES2019 spec-compliant String.prototype.trimStart shim.

Human-friendly process signals

A simple cache for a few of the JS Error constructors.

Gets the description of a Symbol. Handles `Symbol()` vs `Symbol('')` properly when possible.

Unbox a boxed JS primitive value.

sortlab is a versatile sorting package that supports various data structures, such as number arrays and strings, and provides multiple popular sorting algorithms. 💪

The fastest directory crawler & globbing alternative to glob, fast-glob, & tiny-glob. Crawls 1m files in < 1s

A parser that converts TypeScript source code into an ESTree compatible form

Set a function's length property

Is this value a JS SharedArrayBuffer?

Is this value a JS ArrayBuffer?

An ESLint custom parser which leverages TypeScript ESTree

Which kind of boxed JS primitive is this?

ES spec-compliant shim for ArrayBuffer.prototype.slice

TypeScript is a language for application scale JavaScript development

An AST-based pattern checker for JavaScript.

Is this an arguments object? It's a harder question than you think.

Library that allow you to describe data structures by subset of JavaScript syntax and validate them at runtime

Project for showing different data structures and algorithms implemented in Javscript. Not exhaustive, mostly exploratory in nature and for career development. If you see anything wrong, let me know!

JavaScript parser, mangler/compressor and beautifier toolkit for ES6+

An Esprima-compatible JavaScript parser built on Acorn

`Iterator.prototype`, or a shared object to use.

An ESnext spec-compliant `Object.groupBy` shim/polyfill/replacement that works as far down as ES3.

An ESnext spec-compliant `Array.prototype.toSorted` shim/polyfill/replacement that works as far down as ES3.

An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.

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.

Standard AVL tree

Modern TypeScript JSON diff library - Zero dependencies, high performance, ESM + CommonJS support. Calculate and apply differences between JSON objects with advanced features like key-based array diffing, JSONPath support, and atomic changesets.

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 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.

Tooling which enables you to use TypeScript with ESLint

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.

An efficient JavaScript package for implementing and working with Circular Queue data structures.

A pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module.

writing HTML templates as Javascript data structures

Javascript data structures library

Algorithms and data structures

Serialize JavaScript to a superset of JSON that includes regular expressions and functions.

Directed Graph

A collection of common interactive command line user interfaces.

A lightweight carousel library with fluid motion and great swipe precision

Generates CRC hashes for strings - for use by node redis clients to determine key slots.

Reactive utilities for Embla Carousel

A lightweight carousel library with fluid motion and great swipe precision

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.

A query library for ECMAScript AST using a CSS selector like query language.

Check if something can be an ecmascript (javascript) identifier name

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.

Stylish, intuitive and user-friendly prompt system. Fast and lightweight enough for small projects, powerful and extensible enough for the most advanced use cases.

An **EXPERIMENTAL** Webpack plugin to enable "Fast Refresh" (also previously known as _Hot Reloading_) for React components.

Airbnb's base JS ESLint config, following our styleguide

Inquirer prompts, combined in a single package

ESLint JavaScript language implementation

WebAssembly binary format parser

Parses CSS inline style to JavaScript object (camelCased).

A collection of implementation for ECMAScript abstract operations

Listen to realtime updates to your PostgreSQL database

Spectacular Test Runner for JavaScript.

A less than 1KB css-in-js solution

Polyfills the ResizeObserver API and supports box size options from the latest spec

Runtime library for TypeScript helper functions

Trie, prefix tree

regexpu’s core functionality (i.e. `rewritePattern(pattern, flag)`), capable of translating ES6 Unicode regular expressions to ES5.

remark plugin to support MDX syntax

Graph data structure.

ECMAScript extensions and shims

esast (and estree) utility to visit nodes

JS type check (TypeScript supported) functions like `isPlainObject() isArray()` etc. A simple & small integration.

Inquirer checkbox prompt

micromark extension to support MDX or MDX JS expressions

unist utility to get a position from an estree node

micromark extension to support MDX JS import/exports

ES spec-compliant shim for TypedArray.prototype.slice

Airbnb's ESLint config with TypeScript support

Find and fix unused dependencies, exports and files in your TypeScript and JavaScript projects

Publish multiple editions for your JavaScript packages consistently and easily (e.g. source edition, esnext edition, es2015 edition)

Seeder package for MikroORM.

Microsoft Azure Storage SDK for JavaScript - Blob

Transform JSX in estrees to function calls (for react, preact, and most hyperscript interfaces)

Attach comments to estree nodes

A Reactive State Management Tailored-Made for JS Applications

`AsyncIterator.prototype`, or a shared object to use.

JavaScript SVG parser and renderer on Canvas.

JavaScript 3D library

Isomorphic storage client for Supabase.

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.

Stringify is to `eval` as `JSON.stringify` is to `JSON.parse`

Inquirer confirm prompt

Use the :focus-visible pseudo-selector in CSS

Highly configurable, well-tested, JavaScript-based HTML minifier.

A pure javascript JPEG encoder and decoder

A powerful and lightweight inversion of control container for JavaScript and Node.js apps powered by TypeScript.

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.

A JavaScript parser

An ESnext spec-compliant `Array.prototype.toReversed` shim/polyfill/replacement that works as far down as ES3.

ECMAScript 5 compatibility shims for legacy JavaScript engines

JavaScript utilities with respect to emerging standard

Common data structures created in Javascript

Carbon Charts component library

micromark extension to support MDX or MDX.js JSX

Edit a string with the users preferred text editor using $VISUAL or $ENVIRONMENT

Lightweight and performant natural sorting of arrays and collections by differentiating between unicode characters, numbers, dates, etc.

Create and modify PDF files with JavaScript

Is the value an object or an array but not null?

Inquirer password prompt

A JavaScript text diff implementation.

Inquirer checkbox prompt

Inquirer select/list prompt

Detects the JavaScript libraries running on a page

Parses JavaScript objects into XML

Check what’s defined in an estree scope

esast utility to transform from estree

Jspreadsheet is a lightweight, vanilla javascript plugin to create amazing web-based interactive data grids with spreadsheet like controls compatible with Excel, Google Spreadsheets and any other spreadsheet software.

Inquirer rawlist prompt

ECMAScript parsing infrastructure for multipurpose analysis

Inquirer input text prompt

prelude.ls is a functionally oriented utility library. It is powerful and flexible. Almost all of its functions are curried. It is written in, and is the recommended base library for, LiveScript.

A pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module.

recma plugin to add support for parsing and serializing JSX

recma plugin to add support for parsing and serializing JSX

recma plugin to serialize JavaScript

recma plugin to transform HTML (hast) to JS (estree)

recma plugin to parse JavaScript

hast utility to transform to estree (JavaScript AST) JSX

List of properties for JavaScript objects

List of getter/setter properties for JavaScript types

List of JavaScript types

An autoplay plugin for Embla Carousel

Returns true if an object was created by the `Object` constructor, or Object.create(null).

Tweak React components in real time.

vanilla javascript input mask

Standard data structure

CloudEvents SDK for JavaScript

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 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.

Javascript Redis protocol (RESP) parser

Style form elements when they are empty

Heap

Style elements relative to other elements in CSS

Feature-rich JavaScript Spreadsheet (Excel) control with built-in support for selection, editing, formatting, importing and exporting to Excel

There are neither a lot of resources on internet nor any book which guides and dictates best practices in the implementation of popular Data Structures using Javascript. The purpose of this library is to provide cooked implementation of populare data stru

A lightweight, powerful javascript datetime picker

ModderSecure SDK for secure data and backend encryption and decryption. Provides robust AES-256 GCM encryption, secure key management, and premium features for enhanced API security and data privacy.

Some JavaScript and TypeScript implementation of a graph data structure. Features: - Insert and remove nodes. - Connect and disconnect nodes. - Algorithms for graph structures.

Fast, small, efficient JavaScript memoization lib to memoize JS functions

[](https://www.npmjs.com/package/yamux-js) [](https://github.com/th-ch/yamux-js) [![GitHub

JavaScript Testing utilities for React

JavaScript Testing utilities for React

Share server-side state with the client-side of an Express app via JavaScript.

Promptbook: Run AI apps in plain human language across multiple models and platforms

AST utils for webassemblyjs

WebAssembly text format printer

An ESnext spec-compliant shim/polyfill/replacement for all Well-Known Symbols that works in any environment with Symbols.

JavaScript diagramming library

Classify GPU's based on their benchmark score in order to provide an adaptive experience.

Binary Tree. Javascript & Typescript Data Structure.

JavaScript parser, mangler/compressor and beautifier toolkit

TypeScript Data Structures that you need!

Comprehensive TypeScript/JavaScript utility library with cross-environment support (Node.js, browser, web worker) providing helper functions, polyfills (ES5-ES2023), type checking utilities, and optimized implementations for better minification and code r

OAuth 2 / OpenID Connect Client API for JavaScript Runtimes

A JavaScript plugin for entering and validating international telephone numbers

Generate JavaScript-compatible regular expressions based on a given set of Unicode symbols or code points.

Fast document oriented javascript in-memory database

Isomorphic Javascript client for Supabase

Fast SublimeText-like fuzzy search for JavaScript

Returns true if any values exist, false if empty. Works for booleans, functions, numbers, strings, nulls, objects and arrays.

support for asynchronous development with a Promise based task Scheduler, several different Promise implementations (synchronous, idle, asynchronous and native runtime wrappers), await helpers, and aliases all built and tested using TypeScript.

Highly customizable notification snackbars (toasts) that can be stacked on top of each other

Node.js library for Portable Executable format

Official React component for Font Awesome

Airbnb's ESLint config, following our styleguide

declarative immutable-ish data structures

The most popular library of interactive components built with Tailwind CSS

JavaScript client with TypeScript support for the People Data Labs API

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.

Flow types for the Javascript AST

Lottie and DotLottie player for the web

Inquirer core TS types

JavaScript library for DOM operations

This package provides the core functions to define the data models

🚀 The OpenAPI to TypeScript codegen. Generate clients, SDKs, validators, and more.

Polyfill for Metadata Reflection API

Generate a table of contents based on the heading structure of a html document.

A fade plugin for Embla Carousel

ArcGIS Maps SDK for JavaScript: A complete 2D and 3D mapping and data visualization API

Base driver class for Appium drivers

Core Inquirer prompt API