JSPM

Boolean operations on polygons (union, intersection, difference, xor)

An array is a collection of values, stored contiguously.

Greiner-Hormann clipping algorithm

Dynamic BVH implementation based on Erin Catto's paper.

react intersection visible

A data structure for storing number intervals

Javascript Set operations

An iterable is a sequence of values.

Check if two polygons overlap

An easy to use intersection observer hooks based on IntersectionObserver API.

Purely functional linear, quadratic and cubic bezier library, including accurate, robust bezier intersection.

Functional, polymorphic API for 2D geometry types & SVG generation

2D/3D shape intersection checks

intersections between bezier curves of order 2, 3 and lines and rectangles

Action & utilities for building table of contents

Measure and compare the dimensions and distances of DOM elements.

App that shows the intersection between 2 lines or line segments

Vevet is a JavaScript library for creative development that simplifies crafting rich interactions like split text animations, carousels, marquees, preloading, and more.

Script for lazyloading assets using Intersection Observer API

Find intersecting ranges using Marzullo algorithm

High performance set theory - functional utilities which operate on arbitrary input sets.

Javascript library for 2d geometry

Create scrolly-telling animations in React with ease.

image-component

creates a picking ray for a 2D/3D camera

test for collision with a circle and point

A tiny library to observe elements entering the viewport using Intersection Observer.

JavaScript utility to observe sticky elements using the Intersection Observer API

Closed/open/semi-open interval data type, queries & operations

A function collection for working with rectangles

A pack of functions for working with Sets.

Intersection component package with testing and automatic documentation.

intersect a ray and triangle in 3 dimensions

Lightweight cross-browser library that enables you to create a watcher for a given element, and get back a callback when it has entered the viewport

New Set methods polyfill

Intersection Observer for React

a high-level 3D perspective camera

return line segment representing the intersection between a pair of 3D triangles. based on Thomas Möller's algorithm.

Apply boolean Polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

Merge and normalize adjacent or overlapping integer ranges

a high-level ray picking helper for 3D intersection

whether a picking ray intersects with a plane

NPM wrapper of Kevin Lindsey's intersection.js

A function collection for working with circles

Check if two Sets contain all the same values

Lightweight image lazy-loader using the intersection observer API.

Intersection plugin for svg.js

Monitor if a component is inside the viewport, using IntersectionObserver API

react intersection visible hook for react

line-circle collision test

A Svelte action that monitors an element enters or leaves the viewport or a parent element. Performant and efficient thanks to using Intersection Observer under the hood. Forked from maciekgrzybek to support Svelte 5 after no merge of fixes.

Datalog-inspired, optimized pattern/predicate query engine for JS objects & arrays of objects

Monitor if a component is inside the viewport, using IntersectionObserver API

A Vue.js component to lazy load images using the Intersection Observer.

Hook for intersection observer

Tailwind CSS with Intersection Observer variants

Various utilities

This package includes a set of useful array methods that facilitates working with arrays, specifically the arrays that contain objects or arrays even falsy values (such as: 0, null, false, NaN...). This package is es5 supported.

Superfast and small intersection supporting primitives and objects. Up to 3x faster than other libraries. In the age of big data, you need it.

LISN.js browser bundles.

Plain vanilla JS IntersectionObserver utility, to be used as a mixin

Simple Intersection Observer hook for React

Monitor the scroll percentage of a component inside the viewport, using the IntersectionObserver API.

Custom hook designed to detect if an element is visible within the viewport.

Gives values present in both arrays.

An implementation of the Watertight Ray/Triangle Intersection algorithm

An extension of the javascript Set object which contains useful Set operation methods

A library to lazy load images using Intersection Observer

Fast and robust triangle-triangle intersection test with high precision for cross and coplanar triangles based on the algorithm by Devillers & Guigue.

Geometry intersection and bounding volume helpers for PEX.

fast line intersection

A lightweight and simple React hook for detecting if an element is in the viewport using the Intersection Observer API. Perfect for lazy loading, infinite scrolling, animations, and more!

A utility that takes 1 or more sorted arrays and emits a node stream event whenever an intersection is found

Small wrapper for IntersectionObserver, to use it more modular way.

Intersect sorted lists using merge intersection with galloping lookahead

React components to add reveal animations using the Intersection Observer API and CSS Animations.

A javascript library for working with objects

Simply handle user gestures and actions. Includes widgets.

A collection of observers for Svelte

A Bounding Volume Hierarchy data structure, for fast ray-mesh intersection

Determines whether any of the segments of 2 given linestrings intersect

LISN.js for React.

Returns the symmetric difference (exclusive-or) of an array of elements (elements that are present in all given arrays and not in their intersections).

A visibility based trigger for loading more data.

Performant & ergonomic 2D geometry in typescript

React Hook to call an action if an intersected element was reached

a plugin for vue exposure, used by intersection observer API

A group of functions for working with Maps.

Tailwind CSS with Intersection Observer & Load variants

A sorted array is a collection of values, arranged in an order.

Alpine JS magic helper that determines when elements overlap or intersect each other, perfect for menus, tooltips, modals, and collision detection 🥞

A group of functions for working with Maps {web}.

Frequently used tools for React

Monitor if a component is inside the viewport, using IntersectionObserver API

ILists is a pair of key iterable list and value iterable list, with unique keys.

compute the intersection between two intervals

A collection of methods for working with Objects.

An easy-to-use React hook that tells you whether a component/element is visible on the viewport currently, and if yes, how much of it is visible.

A collection of functions for operating upon Entries {web}.

Monitor if a component is inside the viewport, using IntersectionObserver API

A pack of functions for working with Sets {web}.

Gives values present in both arrays.

Node.js utility functions to handle objects

A helper to work with rectangular regions in the DOM

A dependency free utility to set and remove animation classes on elements as they become visible in the viewport, using the Intersection Observer API

ILists is a pair of key iterable list and value iterable list, with unique keys {web}.

Bounding interval hierarchy and bounding volume hierarchy library for nodejs

Find the intersection of two glob patterns

A collection of methods for working with Objects {web}.

An Alpine.js plugin to easily add CSS classes to an element when it enters the viewport.

Returns evenly spaced values within given interval.

Watches targets position in viewport using IntersectionObserver - similar to menuspy

Node utility librairies

An array is a collection of values, stored contiguously {web}.

Lazy load component with react && react-router.

A collection of helpers for detecting intersections in 2D and 3D

A fork from pelias/polygon-lookup with updated dependencies

A collection of functions for operating upon Lists.

An iterable is a sequence of values {web}.

Provides a way with extra configuration options to execute a handler when a given element is on view.

Creates an array of unique values that are included in all given arrays.

A simple and fast API to manage viewport and DOM elements intersections as you scroll

IntersectionTrigger utilizes the most modern web technology to trigger anything by intersection. Including scroll-based animations.

Styled components syntax for creating raw html in javascript.

Javascript Object Extensions

React Hook for Tracking Section Visibility in the Viewport

A sorted array is a collection of values, arranged in an order {web}.

A React component that supports infinite scroll using Intersection Observer API

Counts occurrences of values.

A collection of functions for operating upon Entries.

Boolean operations on polygons

test if a ray intersects an aabb in 2d/3d space

Apply boolean polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

Allows Union, Difference, Xor, and Intersection operations on two polygons.

A library for slideup animation using directive with Angular

Find all intersections between two sets of line segments

ReactJS component that applies CSS styles as it approaches the top of the viewport.

React library for observing and loading blocks of items in lists.

Simple Javascript IntersectionObserver implementation for Ember applications.

An easier way to observe the intersections with the viewport

Greiner-Hormann clipping algorithm; Typescript port.

A JavaScript port of the polyclip library

Frequently used tools for React

A basic library for some utility functions

Javascript library for 2d geometry

Apply boolean Polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

RegexSolver allows you to manipulate regular expressions as sets, enabling operations such as intersection, union, and subtraction.

A small wrapper around turf-intersect to safely clip one geojson polygon to another

Create an iterator which returns the intersection of two or more iterators.

Test if two triangles in the plane intersect

Helpers for Set objects.

A libraray for Isochrone, Routing & geoprocessing GeoJson Data

React lazy loading component using vanilla-lazyload library. Speedy, lightweight and easy to use.


Render on intersection

Gives values present in both arrays.

A utility library providing common array manipulations and React hooks.

detect if a 2D triangle and circle collide

Apply boolean polygon clipping operations (union, intersection, difference, xor) to Polygons & MultiPolygons in your GeoJSON files.

An esay-to-use wrapper class over intersection observer API.

Counts occurrences of values.

A collection of functions for operating upon Lists {web}.

Detect self-intersecting polygons in Javascript. An implementation of the Bentley–Ottmann sweep line algorithm for detecting crossings in a set of line segments.

Dasboard for React

A wrapper for @loadable/component that uses IntersectionObserver to trigger component load.

Return intersect object that have same key from a number of objects

A Bounding Volume Hierarchy data structure, for fast ray-mesh intersection

Returns evenly spaced values within given interval.

A minimalistic es6 implementation of set

Zero-dependency TypeScript runtime type validation with full type inference

This is a simple React Hooks that trigger a callback all time the element is viewed.

Calculate intersection of two lines

BVH

Scalable distinct value counting system

Lazy Loading images and other (JS, etc.) using Intersection Observer with polyfill

Framework agnostic library to detect viewable impressions

A lightweight TypeScript library providing utilities for observing intersection and resize events of DOM elements with automatic cleanup.

Javascript library for 2d geometry. Cloned from flattenjs

A library for working with Sets and arrays as sets.

Rearranges values in arbitrary order.

TailwindCSS Zen intersection animation plugin

Flattens nested array to given depth.

Flattens nested array to given depth.

🔢 JavaScript range validation library - Extend Number and BigInt prototypes with powerful range checking, validation, and manipulation utilities. Perfect for form validation, game development, and scientific computing.

Detects if the inner children are visible

Gives values present in both arrays.

Handle your array objects with ease

Two dimensional geometry manipulation

Remove self intersections, t-junctions and duplicate edges/vertices from a planar straight line graph

test for the intersection of convex polytopes in 2d or 3d, computing the minimum translation vector

A BVH implementation to speed up raycasting against three.js meshes.

Javascript library for 2d geometry

Fast testing whether two line segments intersect

Implementation of range data structures using plain JavaScript arrays.

Scroll position-related navigation state management

An API (wrapper actually) for connect trough Intersection Controller game data like users and maps

Rearranges values in arbitrary order.

Find the symmetric difference of two string arrays.

React standard library

wip

Given a graph with a graph with a non planar embedding, make changes to this graph so that it becomes planar.

Find unique common elements among given arrays

Helper making the observation of element's visibility a little more convenient. Based on the IntersectionObserver API.

[Deprecated] JST to perform set intersection and set subtraction operations on 2 user provided arrays

Automatically lazy load images inserted into the DOM

Broad coverage of sorted array operations

Returns the vertices of multiple circle intersection

Bezier curve intersection algorithm and utilities

calculate the intersection of a ray and a disk or plane in three dimensions

React utilities for lazy image loading

Easy way to observe HTML element visibility, based on scrolling, resizing, changes in DOM. Emits true when observed element starts to be visible and emits false when the element hides.

[![npm package][npm-badge]][npm] ![Module formats][module-formats]

React utilities for lazy image loading - Patched version

Creates an array of unique values, in order, from all given arrays.

React hook for using intersetion observers.

Apply boolean Polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

Experimental API for observing the visible box of an element.

Extending the Set class in order to support mathematical set properties and operations.

Javascript Set operations

This is a React component that loads an image source, only after it is partially or fully visible in the viewport

**With npm:**

Simple modules for functional programming, done for fun.

Returns the items two arrays do not share

A React hook that tells you when an element enters or leaves the viewport.

Create an iterator which returns the intersection of two or more iterators according to a hash function.

Provides functions to operate on Sets, Arrays and Array-Like JavaScript data structures

Manipulation with date periods: intersection, splitting etc.

The package is a "sentinel" that trigger a function when is visible.

Takes two lines and returns all intersection points

Circle Intersection Regions

Get an intersection of multiple arrays and account objects.

🧮 Common set operations (union, difference, isSubset, etc.) for any Iterable

A scroll-to-reveal JavaScript library that unmasks your elements using the clip-path CSS property.

a node.js port of jsclipper [JS]... which is a port of clipper [C++, C#, Delphi]

Compute the closest point between two line segments

ray aabb intersection test using the slab method

A set implementation for integers

Rearranges values in arbitrary order.

Rearranges values in arbitrary order.

intersections of sorted streams

Find all intersections in a set of intervals

generate array of intersection points from array and geometry

Simple robust library for finding lines intersections fast.

Extremely fast set and map/reduce operations for Arrays and Sets plus CartesianProducts

Catching the moment when the specific part of an element is visible in the viewport

IntersectionObserver MenuSpy

React <img> drop-in replacement for lazy image loading

Vue JS lazy image loading

Wrapper for IntersectionObserver that returns the scroll direction

intersection and difference