JSPM

Iterator abstraction based on ES6 specification

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

Returns true if a value exists, false if empty. Works with deeply nested values using object paths.

Array methods for ES6 Iterators

Recursively (deep) clone JavaScript native types, like Object, Array, RegExp, Date as well as primitives.

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

Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

Concatenate a readable stream's data into a single array

Create an array of unique values, in order, from the input arrays

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

List of binary file extensions

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

Check if a string matches the name of a Node.js builtin module

Makes easy to convert JSON to CSV

Create an array by repeating the given value n times.

Is this value a JS ArrayBuffer?

Sort the keys of an object

Copy values from x into y.

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

Set an array of unique values as the property of an object. Supports setting deeply nested properties using using object-paths/dot notation.

Flatten nested arrays

Is this value a JS SharedArrayBuffer?

Robustly get the byte length of a Typed Array

Robustly get the byte offset of a Typed Array

A list of SPDX license identifiers

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

Create an array with values that are present in the first input array but not additional ones

A simple list of possible Typed Array names.

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

Robustly get the length of a Typed Array

Replace or remove multiple items in an array.

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

Get a compare function for array to sort

Simply swizzle your arguments

Detect whether or not an object is a Typed Array

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

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

The swiss army knife for binary data in JavaScript.

TypedArray polyfill for old browsers

Like an array, but rounder.

Push an array of items into an array, while being robust against prototype modification

Module for working with CIDR (v4, v6)

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

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

Parse postgres array columns

Remove duplicate values from an array. Fastest ES5 implementation.

Push items to an array at their correct sort-position

a few common utility template tags for ES2015

Combines a list of arrays, returning a single array with unique values, using strict equality for comparisons.

Typescript-compatible minimalistic shallow equality check for arrays/objects

Returns an array with only the unique values from the first array, by excluding all values from additional arrays using strict equality for comparisons.

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

Return a partial object copy excluding specified keys.

Visit a method over the items in an object, or map visit over the objects in an array.

Return a partial object copy containing only specified keys.

Recursively flatten an array or arrays.

Create an array without duplicates

ES spec-compliant shim for TypedArray.prototype.slice

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

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

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

Convert an array to a csv formatted string

Turn anything into an array

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

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

Run an array of functions in series

Isomorphic, functional type-checking for Javascript

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

No-bullshit, ultra-simple, 35-lines-of-code async parallel forEach / map function for JavaScript.

Copy the elements of an indexed array-like object to a new generic array.

List of text file extensions

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

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

Creates a real Array from almost anything.

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.

ES2015 `Array#findIndex()` ponyfill

Join paths and globs.

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

Treat multiple buffers as one

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

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

Float64Array.

Test if a value is an array.

Test if a value is a Float64Array.

Float32Array.

Test if a value is a Uint8Array.

Test if a value is a Uint16Array.

Uint8Array.

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

Test if a value is a Uint32Array.

Get the last or last n elements in an array.

Maximum unsigned 32-bit integer.

Test if a value is a Float32Array.

Get the longest item in an array.

Uint32Array.

Uint16Array.

Convert Buffer to ArrayBuffer

Faster alternative to javascript's native filter method.

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

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

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

Convert a string to utf8 byte array or vice versa.

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

Check if two arrays are equal

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

Rotate an array by a given number of steps

Move an array item to a different position

Convert an 'address:port' string to an array [address:string, port:number]

Microsoft sucks

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

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

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

Returns a copy of an object, sorted deeply by its keys, without mangling any arrays inside of it

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.

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

List of Markdown file extensions

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

A commonly used array copy utility. (arrayCopy and arrayCopyTo)

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

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

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

flattens nested vertex data into a typed array

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

Merge two lists, trying to preserve the order of both

Chai plugin for JSON Schema v4

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

Return a JSON representation of a typed array.

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

Validates if a value is an array.

Array#filter for older browsers.

Validates if a value is an integer array.

Computes the greatest common divisor (gcd).

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

Safely push each item of an array to a stream

Computes the least common multiple (lcm).

A utility function to index arrays by any criteria

An optionally-asynchronous forEach with an interesting interface.

Deep-merge the values of one object structure into another

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.

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

Create an error from an array of error messages

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

Return a data type from a string representing the type

filter in array tree

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.

Functional tree editing, manipulation & navigation

Sort array elements in descending order.

Sort the keys in an object.

Sort array elements in ascending order.

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

Initialize an array of arrays to a constant

creates a new array with given range

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

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

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

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

Fast intersection of multiple arrays

Asynchronous iterator function for parallel processing.

Shuffle and unshuffle an array by seed/key.

Returns an array filled with the specified input

Make any value an array. No dependencies.

Object/Array shallow copy

Multidimensional Arrays

Array / Arraylike utilities

Microsoft sucks

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

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.

`[].reduce()` for old browsers

Watch an object or array for changes

Flatten a nested array.

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

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.

Extensible deep value equivalence checking for any data types

A map function that can map over almost anything.

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

Converts value to an integer suitable for use as the length of an array-like object.

Make array iteration easy when using async/await and Promises

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.

Generates an array of consecutive integers starting at 0

Prettier plugin to force all arrays to be multiline.

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

Bind data arrays to any type of JS objects

Copy the elements of an array-like object to a new generic array.

Check whether a value is "empty".

Convert base64/datauri/plain string to ArrayBuffer

remove items from a javascript array without generating memory garbage

Copies missing properties to the target 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.

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

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

Convert Gitignore to Glob patterns

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

Removes specified values from the end of an array.

Reuse typed arrays

Recursively iterates over arrays and objects

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

Sort an array on an object property

Packs an array-of-arrays into a single ndarray

Convert any binary data to ArrayBuffer

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

Lazily initialized properties for objects

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

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Rotate all items in an array

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

Rearrange array elements by index array

Find [nd-]array min/max values

Simple iterator for flat and multi section lists

List of getter/setter properties for JavaScript types

List of properties for JavaScript objects

List of JavaScript types

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

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

The Type Conversion Library. Numbers, Strings, Arrays, Maps, Objects, and Iterators.

Return the shape of a provided ndarray.

Uint8ClampedArray.

Easily create a normalized inquirer choices question. Supports all of the `choices` question types: checkbox, list, rawlist, expand

Maximum length for a typed array.

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

Return the strides of a provided ndarray.

Create a filled generic array.

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

Run promise-returning & async functions in series

Test if a value is a collection.

Test if a value is an Int32Array.

Create a zero-filled generic array.

Computes the dot product between two numeric arrays.

Get consecutively unique elements from an array

Computes the cosine similarity between two arrays.

Randomize the order of items in an array

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

Int8Array.

Int16Array.

Test if a value is an Int8Array.

Return true if the given number is even.

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Perform data joins with any type of JS objects

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

Memory-Aware Statistical Calculations

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

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

Converts iterable objects into readable streams.

common javascript utils that can be required selectively that assume es5+

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

Test if a value is a Uint8ClampedArray.

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

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

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

Int32Array.