JSPM

A utility function to index arrays by any criteria

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

Module for working with CIDR (v4, v6)

Flatten a nested array.

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.

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.

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.

Sort string index ranges

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

Asynchronous iterator function for parallel processing.

Check if the given value is an Array

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

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

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

Fast intersection of multiple arrays

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

Randomize the order of the elements in a given array.

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

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

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.

Create an error from an array of error messages

Find the intersection of two arrays

List of video file extensions

Get consecutively unique elements from an array

A map function that can map over almost anything.

Convert Gitignore to Glob patterns

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.

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

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

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

Uppercase first character of each element in arrays of strings.

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

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

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

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

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.

Prettier plugin to force all arrays to be multiline.

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

Set of (possibly rotated) arrays

Convert an array to a csv formatted string

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.

find all combinations from array

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

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

Convert any binary data to ArrayBuffer

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

dedupes an array

Run promise-returning & async functions in series

List of US states and territories.

a map from arrays of values to values

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]]`.

Simple command line parser for node

return the number of bytes in a unicode string

Composite utilities (immutability, fp helpers)

Maximum length for a typed array.

Detect which ES6 (ES2015 and above) features are available

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

Create a filled generic array.

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

Test if a value is an Int32Array.

Uint8ClampedArray.

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

Array-map like function for objects.

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

Maximum unsigned 32-bit integer.

Compute the cartesian product of an array.

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

Fun with Iterables

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

Create a zero-filled generic array.

Int8Array.

Sort the keys of an object recursively

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

Int16Array.

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.

Transforms nested keys of complex objects

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.

Component-wise operations on ndarrays

Test if a value is an Int8Array.

HashMap Class for JavaScript

Check if a value is an array or a typed array

Validates if a value is array-like.

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

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

Shuffle Array based on a Seed

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

Create an object from from arrays of keys and values

List of prototype properties for JavaScript types

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

Fast, generic JavaScript/node.js utility functions.

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

Computes array dimensions.

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

write logs to js Array

Copy or deep clone a value to an arbitrary depth.

Get the Smallest and Largest Possible Numbers for a Typed Array

Treat your $PATH like a JavaScript Array

Test if a value is a Uint8ClampedArray.

Maximum length for a generic array.

Int32Array.

Test if a value is an Int16Array.

WebGL buffer wrapper

Perform data joins with any type of JS objects

Sort an array using the merge-sort algorithm.

Type checking for JSON values

Get Pokémon names

Sorts ndarrays in place

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

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

Push items to an array at their correct sort-position

Do not repeat anymore your objects transformations.

Generate a range array for numbers

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

return a grouped object from array

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

Vertex array object wrapper/shim for WebGL

Returns an element from an array when it matches a condition

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

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

Compare string arrays

Arrays.

Component to iterate an array round robin.

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

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

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

Soft Asserts JSON, Array and other data

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

Multidimensional arrays.

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

Remove circular references from objects

Copy or deep clone a value to an arbitrary depth.

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

Converts iterable objects into readable streams.

Convert a string to utf8 byte array or vice versa.

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

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

Calculates the Cartesian product between multiple collections.

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

Convert ArrayBuffer to string

Complex128Array.

Like Array#indexOf but for objects used like hashes

Get a random item from an array

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

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

Complex64Array.

Test if a value is an ArrayBuffer.

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.

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

Reinterpret a Complex64Array as a Float32Array.

Add an object to an array between each element

Get all chunks of a stream

Extended JS Map with Array-like methods

Copies missing properties to the target object.

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

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.

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

🐊Putout plugin adds ability to convert array copy to slice

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

Parse string into array of string elements

Functional tools for JS arrays

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

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

Convert ArrayBuffer to Buffer

Test if a value is an array-like object.

Reinterpret a Complex128Array as a Float64Array.

Filter array elements with Promises

Return the data type of an array.

Test if a value is array-like.

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

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.

🐊Putout plugin adds ability to convert anonymous to arrow function

Decode the frames of a gif.

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

Polyfill to provide array.find on IE.

Copy values from x into y.

🐊Putout plugin adds ability to remove useless Array constructor

Generate markdown table from array of objects

Splits array into groups of n items each

Return a JSON representation of a typed array.

Effectively merge arrays of objects into a single array by merging objects with the same key (property).

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

Test if a value is a typed array.

Test if a value is a complex typed array.

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.

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

Return an accessor function for setting an element in an array-like object supporting the get/set protocol.

Produces a new array, sorted in ascending order

Produces a new array, sorted in given order

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

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

Check if an Array is sorted

Frequent default values

easy deduplication of array values

Compare two arrays of objects, finding added, removed, updated and identical objects. Details the differences between updated objects.

Return an accessor function for retrieving an element from an array-like object supporting the get/set protocol.

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

Test if an array-like object supports the accessor (get/set) protocol.

Test if a value is a Complex64Array.

return a flattened array

Like _.pullAll but with globs (wildcards)

Return an accessor function for retrieving an element from an indexed array-like object.

Return early from reduce

Chained and parallel async iterator in one elegant function.

Test if a value is a Complex128Array.

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Cycle through the items of an array

Estlint rule - no async callbacks for array methods

List of ndarray data types.

Extract the first JSON object or array from a string

Check whether a value is nonblank.