JSPM

List of text file extensions

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

Join paths and globs.

ES2015 `Array#findIndex()` ponyfill

Like an array, but rounder.

Convert a string/promise/array/iterable/asynciterable/buffer/typedarray/arraybuffer/object into a stream

Array methods for ES6 Iterators

Array-slice method. Slices `array` from the `start` index up to, but not including, the `end` index.

Get the longest item in an array.

Simple to use (Angular) component for viewing text, such as JSON and arrays, with a 'copy to clipboard' option.

Replace or remove multiple items in an array.

Loop over each item in an array and call the given function on every element.

Natural Sort algorithm for Javascript - Version 0.7 - Released under MIT license

Convert an argument into a valid iterator. Based on the `.makeIterator()` implementation in mout https://github.com/mout/mout.

Check if two arrays are equal

Return true if a value is a valid glob pattern or patterns.

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

Typescript-compatible minimalistic shallow equality check for arrays/objects

Push items to an array at their correct sort-position

ES spec-compliant shim for TypedArray.prototype.slice

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

Concatenate a readable stream's data into a single array

Microsoft sucks

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

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.

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

Run an array of functions in series

No-bullshit super-simple es7 collections shim for Array#includes, Object.values, Object.entries

A order-map collection in the form of key, value, that ensures the index.

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.

A Node-RED node to copy array data obtained from influxdb out node and display it on FlowFuse Dashboard 2.0

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

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.

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

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

Iterates over the elements in an array, returning an array with only the elements for which the callback returns truthy.

Computes the least common multiple (lcm).

An optionally-asynchronous forEach with an interesting interface.

Fast and powerful array sorting. Sort an array of objects by one or more properties. Any number of nested properties or custom comparison functions may be used.

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

Convert a string to utf8 byte array or vice versa.

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

Treat multiple buffers as one

filter in array tree

Sort array elements in descending order.

Sort the keys in an object.

Sort array elements in ascending order.

Simple ES6 Array.prototype.findIndex polyfill for older environments.

[](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

Sorts any JavaScript array in a predictable way (deep equal arrays are always sorted in the same order)

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

Multidimensional Arrays

Create an immutable clone or copy of data. This could be an array, object, map, set or function.

Watch an object or array for changes

Microsoft sucks

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

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

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

Sort an array on an object property

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

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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.

Given an array, shuffles a cloned copy, and returns it. (Fisher–Yates method)

Deep-merge the values of one object structure into another

Rearrange array elements by index array

Initialize an array of arrays to a constant

Rotate all items in an array

Find [nd-]array min/max values

Convert Buffer to ArrayBuffer

creates a new array with given range

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

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

Copies missing properties to the target object.

List of properties for JavaScript objects

List of JavaScript types

Rotate an array by a given number of steps

Makes easy to convert JSON to CSV

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

Shuffle and unshuffle an array by seed/key.

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.

Returns independent copy of a passed array

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 / Arraylike utilities

Isomorphic, load-anywhere function to sort an array by scalar, deep or computed values in any standard or custom order

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

Merge two lists, trying to preserve the order of both

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.

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.

Module for working with CIDR (v4, v6)

Flatten a nested array.

Removes specified values from the end of an array.

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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.

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.

Sort string index ranges

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

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

Immutable Array.prototype.copyWithin().

Returns independent copy of a passed array

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.

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

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.

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

Return the shape of a provided ndarray.

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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Return the strides of a provided ndarray.

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.

Remembers the highest/lowest values in a data set of any size.

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.

Sort an object's keys, including an optional key list

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

Sparse array implementation in JS with no dependencies

Collection of image extensions

Blazing fast, tree-shakeable, type-safe, modern utility library to sort any type of array in less than 1 KB!

Bind data arrays to any type of JS objects

Sort objects by property names using native Array.sort()

Circular fixed size array

Copies part of array within.

Group array of objects into lists.

Convert base64/datauri/plain string to ArrayBuffer

A BBCode to AST Parser part of @bbob

Randomize the order of items in an array

Count leading zeros in a Buffer (clz)

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

flatten() utility function

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.

Check if an object is an array or a typed array

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

Return a shallow copy of a portion of an array.

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

Lots of utilities for Node.js

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

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

find all combinations from array

Prettier plugin to force all arrays to be multiline.

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]]`.

Copies part of array to another.

return the number of bytes in a unicode string

Copies part of array to another.

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.