JSPM

Computes the dot product between two numeric arrays.

Computes the cosine similarity between two arrays.

Chai plugin for JSON Schema v4

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

Extensible deep value equivalence checking for any data types

Merge two lists, trying to preserve the order of both

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

Return true if the given number is even.

Functional tree editing, manipulation & navigation

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

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

Recursively iterates over arrays and objects

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

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

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.

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

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

Module for working with CIDR (v4, v6)

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

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

List of common default router IP addresses

Flatten a nested array.

A utility function to index arrays by any criteria

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

recursive object extending & overriding

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

Sort string index ranges

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

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

Lazily initialized properties for objects

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

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

Asynchronous iterator function for parallel processing.

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.

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.

Pipe an Array through Node.js streams

Check if the given value is an Array

Fast intersection of multiple arrays

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

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.'

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

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.

Execute a method out from an object.

Create an error from an array of error messages

create a new array filled with a value, or zero

remove items from a javascript array without generating memory garbage

Get consecutively unique elements from an array

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

Find the intersection of two arrays

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

Uppercase first character of each element in arrays of strings.

A map function that can map over almost anything.

Convert Gitignore to Glob patterns

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

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

List of video file extensions

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

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

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

Collection of image extensions

Bind data arrays to any type of JS objects

Circular fixed size array

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

Group array of objects into lists.

Sparse array implementation in JS with no dependencies

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

Randomize the order of items in an array

Convert base64/datauri/plain string to ArrayBuffer

A BBCode to AST Parser part of @bbob

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

compare two collections

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

Count leading zeros in a Buffer (clz)

Check if an object is an array or a typed array

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

flatten() utility function

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

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.

Set of (possibly rotated) arrays

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

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.

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

Convert an array to a csv formatted string

find all combinations from array

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

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

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

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

Run promise-returning & async functions in series

a map from arrays of values to values

dedupes an array

Simple command line parser for node

Composite utilities (immutability, fp helpers)

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

Create a filled generic array.

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

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

Maximum length for a typed array.

Get the Depth of a Multi-Dimensional Array of Values

Transforms nested values of complex objects

return the number of bytes in a unicode string

Memory-Aware Statistical Calculations

Invoke getter/setter functions on array-like objects

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

Detect which ES6 (ES2015 and above) features are available

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

Fun with Iterables

Test if a value is a collection.

Create a zero-filled generic array.

Test if a value is an Int32Array.

Uint8ClampedArray.

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

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.

Quickest Way to get the Minimum Value of an Array of Numbers (Typed or Untyped)

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

Shuffle Array based on a Seed

Maximum unsigned 32-bit integer.

Sort the keys of an object recursively

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

Create an object from from arrays of keys and values

Compute the cartesian product of an array.

Transforms nested keys of complex objects

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.

Quickest Way to get the Maximum Value of an Array of Numbers (Typed or Untyped)

Int16Array.

Int8Array.

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

write logs to js Array

HashMap Class for JavaScript

Array-map like function for objects.

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

Test if a value is an Int8Array.

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

Validates if a value is array-like.

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

Check if a value is an array or a typed array

List of prototype properties for JavaScript types

Get the Smallest and Largest Possible Numbers for a Typed Array

Fast, generic JavaScript/node.js utility functions.

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

Component-wise operations on ndarrays

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

Get or set a deep value using a keypath string. Supports bracket and dot notation

Copy or deep clone a value to an arbitrary depth.

Sort an array using the merge-sort algorithm.

Test if a value is an Int16Array.

Sorts ndarrays in place

short-circuited, asynchronous version of Array.protototype.some

Perform data joins with any type of JS objects

Int32Array.

Maximum length for a generic array.

Test if a value is a Uint8ClampedArray.

Computes array dimensions.

Find the index to insert an element in array keeping the sort order.

WebGL buffer wrapper

Treat your $PATH like a JavaScript Array

Get Pokémon names

Push items to an array at their correct sort-position

Type checking for JSON values

Advance to the next item in the array looping when hitting the end.

Vertex array object wrapper/shim for WebGL

Get the index of the first element in an array that returns truthy for the given value, using strict equality for comparisons.

return a grouped object from array

Do not repeat anymore your objects transformations.

Array of "block level elements" defined by the HTML specification

Arrays.

Consumes a defaults object with booleans, generates all possible variations of it

Returns an element from an array when it matches a condition

Generate a range array for numbers

A convenient way to return a JSX fragment without the wrapping `div` element and not worry about the version of React.

Compare string arrays

Multidimensional arrays.

Component to iterate an array round robin.

Determine the best order for running async functions, and run them

Ensure a value is an array and wrap it if it is not an array

Remove circular references from objects

Copy or deep clone a value to an arbitrary depth.

Soft Asserts JSON, Array and other data

Converts iterable objects into readable streams.

Return an array with the unique values present in _all_ given arrays using strict equality for comparisons.

Convert a string to utf8 byte array or vice versa.

Returns true if the callback returns truthy for all elements in the given array.

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

Big Array object that allows to handle arrays with a huge number of elements.

Checks if the given value is an array or array-like object.

A [Chai](http://chaijs.com/) plugin that allows for assertions on each item in an array

Convert ArrayBuffer to string

A tiny JavaScript library for converting arrays of strings to compound subjects

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

Calculates the Cartesian product between multiple collections.

Complex64Array.

Test if a value is an ArrayBuffer.

Fixes key names for HTTP form data, to ensure that arrays are handled correctly.

Complex128Array.

format multiline strings using tagged templates, instead of puting all lines into an array and joining to a string

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

Functional tools for JS arrays

Get a random item from an array

Reinterpret a Complex64Array as a Float32Array.

Add an object to an array between each element

Extended JS Map with Array-like methods

Save file dialog in browser, write file to disk in node

Like Array#indexOf but for objects used like hashes

Copies missing properties to the target object.

Given an array, pick a random element and return it.

Convert a plain array of nodes (with pointers to parent nodes) to a tree

Get all chunks of a stream

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.

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

Parse string into array of string elements

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

Convert an array-like object to an object likely to have the same "shape".

🐊Putout plugin adds ability to convert array copy to slice

Convert ArrayBuffer to Buffer

Test if a value is an array-like object.

Reinterpret a Complex128Array as a Float64Array.

A lightweight javascript diff library for comparing two javascript object nested with supporting matching by value of the object's choosen key name in array.

Test if a value is array-like.

Filter array elements with Promises

Decode the frames of a gif.

🐊Putout plugin adds ability to convert anonymous to arrow function

🐊Putout plugin adds ability to remove useless Array constructor

Sort objects and arrays of objects nested deeply within other objects or arrays

returns an array of grouped elements, taking n-th element from every given array

Return the data type of an array.

Copy values from x into y.

Return a JSON representation of a typed array.

Return an accessor function for setting an element in an indexed array-like object.

A toolkit for deep structure manipulations, provides deep merge/clone functionality out of the box, and exposes hooks and custom adapters for more control and greater flexibility.

Extract javascript comments on per character basis. Comment object compatible with `acorn-extract-comments` and Esprima format.

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

Test if a value is a typed array.

Test if a value is a complex typed array.

Polyfill to provide array.find on IE.

Transform all for-of loops into the equivalent array for loop

Frequent default values

Produces a new array, sorted in ascending order

Generate markdown table from array of objects

Test if a value is a Complex64Array.

Splits array into groups of n items each

Check if an Array is sorted