JSPM

ES spec-compliant shim for TypedArray.prototype.slice

Concatenate a readable stream's data into a single array

Microsoft sucks

Iterate any iterable JS value. Works robustly in all environments, all versions.

Simultaneously sort two strided arrays based on the sort order of the first array using Shellsort.

List of Markdown file extensions

Find the greatest satisfied semver range from an array of ranges.

An ES5 spec-compliant `Array.prototype.map` shim/polyfill/replacement that works as far down as ES3.

Data engine is small data management lib for some sort and filter.

An ES5 spec-compliant `Array.prototype.filter` shim/polyfill/replacement that works as far down as ES3.

Run an array of functions in series

Get the last or last n elements in an array.

Creates an async iterator for a variety of inputs in the browser and node. Supports fetch, node-fetch, and cross-fetch

Isomorphic map-reduce function to flatten an array into the supplied array

Validates if a value is an array.

Uniquely flexible and light-weight utility for cloning and deep (recursive) merging of JavaScript objects. Supports descriptor values, accessor functions, and custom prototypes. Provides advanced options for customizing the clone/merge process.

Faster alternative to javascript's native filter method.

Run an array of functions in parallel, but limit the number of tasks executing at the same time

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

Randomize the order of items in an array

Validates if a value is an integer array.

Computes the greatest common divisor (gcd).

Run promise-returning & async functions in series, each passing its result to the next

Array#filter for older browsers.

Library that manipulates veriety of data structures. Right now replace and sort are available.

make a shallow copy of an object or array

A ponyfill for the ES 2015 (ES6) `Array.from()`.

Get all but the last element or last n elements of an array.

Computes the least common multiple (lcm).

Sort an array alphabetically, ignoring case

An optionally-asynchronous forEach with an interesting interface.

Faster, node.js focused alternative to JavaScript's native array map.

`Array#forEach()` but it’s possible to define where to move to next

Treat multiple buffers as one

filter in array tree

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

[](https://www.npmjs.com/package/levenary) [](https://github.com/tanhauhau/levenary/actions)

finds an item in an array matching a predicate function, and returns its index

Make any value an array. No dependencies.

ES6 Array.find ponyfill. Return the first array element which satisfies a testing function.

`[].map(f)` for older browsers

A faster Node.js alternative to Array.prototype.slice.call(arguments)

Multidimensional Arrays

An array is a collection of values, stored contiguously.

Watch an object or array for changes

Microsoft sucks

Sort array of strings by faroese alphabet

Make array iteration easy when using async/await and Promises

Check whether a value is "empty".

`[].reduce()` for old browsers

Generates an array of consecutive integers starting at 0

Arranges values in an order.

Sort an array of numbers, in ascending order

Test if a value is an array.

Return a function which tests if every element in an array passes a test condition.

A tiny, faster alternative to native Array.prototype.every

Find the first element in an array that passes a callback test. Equivalent to underscore.find()

Maximum unsigned 32-bit integer.

Safely push each item of an array to a stream

Reuse typed arrays

A simple and composable way to validate data in JavaScript (and TypeScript).

Test if a value is a Uint32Array.

Test if a value is a Float64Array.

Float32Array.

Test if a value is a Uint8Array.

Test if a value is a Uint16Array.

Float64Array.

Returns true if the given number is odd, and is an integer that does not exceed the JavaScript MAXIMUM_SAFE_INTEGER.

Return a data type from a string representing the type

Uint8Array.

Uint32Array.

Uint16Array.

Packs an array-of-arrays into a single ndarray

Test if a value is a Float32Array.

Deep-merge the values of one object structure into another

Initialize an array of arrays to a constant

Rotate all items in an array

Find [nd-]array min/max values

Simultaneously sort two double-precision floating-point strided arrays based on the sort order of the first array using heapsort.

Convert Buffer to ArrayBuffer

creates a new array with given range

Deep copy objects and arrays

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

Simple iterator for flat and multi section lists

Normalize array (possibly n-dimensional) to zero mean and unit variance

Move an array item to a different position

List of getter/setter properties for JavaScript types

flattens nested vertex data into a typed array

this npm package help to user sort the data from the array in javascript. user can sort data with/without object name.

Returns an array containing the initial elements which both input arrays have in common

List of properties for JavaScript objects

List of JavaScript types

Rotate an array by a given number of steps

The swiss army knife for binary data in JavaScript.

Makes easy to convert JSON to CSV

Comma delimit an array for human readability, the Oxford comma is optional.

Simple function `binaryInsert(array, value, comparator)` that provides binary insert functionality for a **sorted** array in javascript. This is mostly intended for larger arrays, and the performance gain may be viewed in the [benchmark](#benchmarks).

Uniquely flexible and light-weight utility for cloning and deep (recursive) merging of JavaScript objects. Supports descriptor values, accessor functions, and custom prototypes. Provides advanced options for customizing the clone/merge process.

More than 130 Handlebars helpers in ~20 categories. Helpers can be used with Assemble, Generate, Verb, Ghost, gulp-handlebars, grunt-handlebars, consolidate, or any node.js/Handlebars project.

Merge Sort Algorithm Implementation

Compare your item to items in an array and get the closest one.

Computes the dot product between two numeric arrays.

Computes the cosine similarity between two arrays.

Creates a real Array from almost anything.

Functional tree editing, manipulation & navigation

Return true if the given number is even.

Chai plugin for JSON Schema v4

Extensible deep value equivalence checking for any data types

A fast implementation of a fisher-yates shuffle that does not mutate the source array.

An ES5 spec-compliant `Array.prototype.every` shim/polyfill/replacement that works as far down as ES3.

Get unique values of an array. Really, like deeply unique.

Wrapper for [braces] to enable brace expansion for arrays of patterns.

Produces a new array, sorted in given order

Recursively iterates over arrays and objects

An RxJS map operator that takes an observable of arrays as input and emits arrays where each element represents emissions from the projected observable.

List of common default router IP addresses

Returns true if the given is falsey (according to JavaScript) or matches a 'falsey' keyword.

high-performance, zero-dependency circular reference check for objects (or arrays)

Computes the L2 norm (Euclidean norm) of an array of values.

A utility function to index arrays by any criteria

Give eachr an item to iterate (array, object or map) and an iterator, then in return eachr gives iterator the value and key of each item, and will stop if the iterator returned false.

🔧 Fast, modern, and practical utility library for FP in TypeScript.

Like Array#filter, but lets you categorize an array into any amount of smaller arrays

Search sort, filter, limit and iterate over an array of objects in Mongo-style.

Module for working with CIDR (v4, v6)

Flatten a nested array.

Simultaneously sort two double-precision floating-point strided arrays based on the sort order of the first array using Shellsort.

Adds array support to node-glob, sync and async. Also supports tilde expansion (user home) and resolving to global npm modules.

More than 130 Handlebars helpers in ~20 categories. Helpers can be used with Assemble, Generate, Verb, Ghost, gulp-handlebars, grunt-handlebars, consolidate, or any node.js/Handlebars project.

Array with sorted insertion and optimized search methods.

recursive object extending & overriding

Object -> [[key0, value0], [key1, value1]...]

Reduce an array to unique values, optionally into a separate array.

Lazily initialized properties for objects

Turn an array into a list of comma-separated values, appropriate for use in an English sentence.

A lightweight package to give a massive reinforcements to variant types of data in Nodejs/Javascript

Asynchronous iterator function for parallel processing.

Run an array of functions in series, each passing its results to the next function (waterfall)

Check if the given value is an Array

Arranges values in an order.

Get sorted indexes of array (using insertion sort).

Join all elements of an array and create a human-readable string

Promised First-In-First-Out buffer. Await on push to be told when a value is consumed and await on shift for a value to consume when the buffer is empty.

Parse dotenv files for Boolean, Array, and Number variable types, built for CrocodileJS

Pipe an Array through Node.js streams

Like lodash's _.defaultsDeep, but with array preservation

Fast intersection of multiple arrays

Randomize the order of the elements in a given array.

Read, write or test a data structure's nested property via a string like 'my.nested.property'. It works through arrays and objects.'

Execute a method out from an object.

An Extensive JavaScript Standard Library.

Async array reduce. Asynchronously applies a function against an accumulator and each element in an array (from left to right, in series) to reduce it to a single value.

Returns an array filled with the specified input

Sorts items in descending order of length.

create a new array filled with a value, or zero

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

A complete, fully tested data structure library written in TypeScript.

Get an array of valid, sorted, and cleaned semver versions from an array of strings

Create an error from an array of error messages

Find the intersection of two arrays

Get consecutively unique elements from an array

List of video file extensions

A map function that can map over almost anything.

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object-observer utility provides simple means to (deeply) observe specified object/array changes; implemented via native Proxy; changes delivered in a synchronous way

remove items from a javascript array without generating memory garbage

A data structure that combines a hash and an array for fast dictionary lookup and traversal by complex keys.

Transform dot-delimited strings to array of strings for Node.js and the browser.

Creates and makes an array without duplicates. Even with array of objects with a specified matcher.

Uppercase first character of each element in arrays of strings.

A function for iterating over objects, arrays, strings and ranges

Convert Gitignore to Glob patterns

A parallel, asynchronous implementation of forEach in ES6 with a configurable maximum degree of parallelism.

Sparse array implementation in JS with no dependencies

Collection of image extensions

Sort an array into ascending or descending order

Bind data arrays to any type of JS objects

Circular fixed size array

Group array of objects into lists.

Convert base64/datauri/plain string to ArrayBuffer

Simple javascript lib for converting a [comma || space] delimited string to an array

A BBCode to AST Parser part of @bbob

Count leading zeros in a Buffer (clz)

Arranges values in an order.

An helper function to sort array based on a property or a predicate

Utility for modifying / processing the contents of Javascript objects or arrays via object notation strings or globs.

flatten() utility function

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.

sort an array into different piles based on some filtering functions

Returns `true` if the given string or array starts with prefix using strict equality for comparisons. Using fastest implementation.

compare two collections

Returns `true` if the given `string` or `array` ends with `suffix` using strict equality for comparisons.

Data engine is small data management lib for some sort and filter.

Check if an object is an array or a typed array

Array reducing utility.

Works like String.prototype.replace but outputs an array. Useful for replacing parts of the string with objects of other types.

An ES-spec-compliant (proposed) Array.prototype.at shim/polyfill/replacement that works as far down as ES3

Set of (possibly rotated) arrays

When you want array.some but not array.every. Useful when you need to determine partially selected states - like partially selecting tree nodes when some but not all child nodes are checked.

Convert an array to a csv formatted string

Swap two items in an array. Does not modify the Array prototype.

find all combinations from array

Prettier plugin to force all arrays to be multiline.

A series of Tools to make sorting Arrays easier to work with, particularly when sorting objects.

Asynchronously calls a function on each element in an array in parallel.

dedupes an array

Run promise-returning & async functions in series

Implementation of paper 'An O(ND) Difference Algorithm and Its Variations' on array

List of US states and territories.

Convert any binary data to ArrayBuffer

a map from arrays of values to values

Replaces `arr.includes(val)' with `arr.indexOf(val) >= 0`.

In an array of objects, this enables a property on the object at the specified index, while disabling the property on all other objects.

Returns `true` if a value exists in the given string, array or object.

Transforms nested values of complex objects

Casts the given value to a flatten array, and removes falsey items (similar to lodash compact).

Chunk converts arrays like `[1,2,3,4,5]` into arrays of arrays like `[[1,2], [3,4], [5]]`.

Sort numbers in ascending or descending order

return the number of bytes in a unicode string

Composite utilities (immutability, fp helpers)

Maximum length for a typed array.

Invoke getter/setter functions on array-like objects

Get the Depth of a Multi-Dimensional Array of Values

Returns the first index at which a given element can be found.

Test if a value is a collection.

Memory-Aware Statistical Calculations

Retrieves the value of a specified property from all elements in the collection.

Create a filled generic array.

Lots of utilities for Node.js

Test if a value is an Int32Array.

Uint8ClampedArray.

Detect which ES6 (ES2015 and above) features are available

Helper library for getting all of the states and territories of the United States in the specific format that you need.

qsu is a utility library that contains useful and frequently used functions. Start with your preferred language and the modern development environment.

Array-map like function for objects.

Maximum unsigned 32-bit integer.

Compute the cartesian product of an array.

Check whether a value is empty or blank, includes string whitespace support

Create a zero-filled generic array.

Array#filter() with also detecting indexes of filtered values

Fun with Iterables

Int16Array.

Multi-Dimensional Functions. Create, Query, and Transform Multi-Dimensional Data.

Converts an array of items with ids and parent ids to a nested tree in a performant `O(n)` way. Runs in browsers and node.

Put non-empty strings into arrays, turn empty-ones into empty arrays. Bypass everything else.

Fuzzy match a command from a list (typo-safety)

Allows deep cloning of plain objects that contain primitives, nested plain objects, or nested plain arrays.

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Component-wise operations on ndarrays