JSPM

🐊Putout plugin adds ability to convert array copy to slice

make a shallow copy of an object or array

Deep copy objects and arrays

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

Copy or deep clone a value to an arbitrary depth.

Copy or deep clone a value to an arbitrary depth.

Creates a shallow clone of any JavaScript value.

Get the first fulfilled promise that satisfies the provided testing function

Guarantees an array back

Get the first path that exists on disk of multiple paths

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

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

Utils for working with JavaScript classes and prototype methods.

Run an array of functions in parallel

User-friendly glob matching

prelude.ls is a functionally oriented utility library. It is powerful and flexible. Almost all of its functions are curried. It is written in, and is the recommended base library for, LiveScript.

Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`

Tiny queue data structure

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

Get the native type of a value.

Array#isArray for older browsers

Array manipulation, ordering, searching, summarizing, etc.

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

Returns true if a value is a plain object, array or function.

Removes duplicates from a sorted array in place

Minimal async jobs utility library, with streams support

An ES2019 spec-compliant `Array.prototype.flat` shim/polyfill/replacement that works as far down as ES3.

ES spec-compliant shim for ArrayBuffer.prototype.slice

An ES2019 spec-compliant `Array.prototype.flatMap` shim/polyfill/replacement that works as far down as ES3.

An ES7/ES2016 spec-compliant `Array.prototype.includes` shim/polyfill/replacement that works as far down as ES3.

Convert a value to an array

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

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

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

Map `visit` over an array of objects.

extend like a boss

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

A static list of the Node.js builtin modules from the latest Node.js version

Determines if an object can be used as an array

Iterator abstraction based on ES6 specification

Remove circular references from objects

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

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

Array methods for ES6 Iterators

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

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

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

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

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

Create an array by repeating the given value n times.

List of binary file extensions

Makes easy to convert JSON to CSV

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

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.

Sort the keys of an object

Flatten nested arrays

A list of SPDX license identifiers

Copy values from x into y.

Robustly get the byte length of a Typed Array

Is this value a JS ArrayBuffer?

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

Is this value a JS SharedArrayBuffer?

Robustly get the byte offset of a Typed Array

Replace or remove multiple items in an array.

A simple list of possible Typed Array names.

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

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

Robustly get the length of a Typed 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

TypedArray polyfill for old browsers

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

Like an array, but rounder.

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

The swiss army knife for binary data in JavaScript.

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

Module for working with CIDR (v4, v6)

Parse postgres array columns

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

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

Remove duplicate values from an array. Fastest ES5 implementation.

Push items to an array at their correct sort-position

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

a few common utility template tags for ES2015

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.

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

Return a partial object copy excluding specified keys.

Return a partial object copy containing only specified keys.

Recursively flatten an array or arrays.

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

Create an array without duplicates

ES spec-compliant shim for TypedArray.prototype.slice

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

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

Turn anything into an array

Convert an array to a csv formatted string

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

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

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

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

Isomorphic, functional type-checking for Javascript

Run an array of functions in series

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

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

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

List of text file extensions

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.

Creates a real Array from almost anything.

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

Join paths and globs.

ES2015 `Array#findIndex()` ponyfill

Treat multiple buffers as one

Test if a value is an array.

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

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

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

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

Maximum unsigned 32-bit integer.

Get the longest item in an array.

Test if a value is a Uint8Array.

Test if a value is a Uint16Array.

Float64Array.

Test if a value is a Uint32Array.

Uint8Array.

Test if a value is a Float64Array.

Float32Array.

Get the last or last n elements in an array.

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

Faster alternative to javascript's native filter method.

Uint32Array.

Uint16Array.

Convert Buffer to ArrayBuffer

Test if a value is a Float32Array.

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

Convert a string to utf8 byte array or vice versa.

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

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

Check if two arrays are equal

Rotate an array by a given number of steps

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

Move an array item to a different position

Microsoft sucks

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

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

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

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

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

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

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

List of Markdown file extensions

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

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

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.

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

flattens nested vertex data into a typed array

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

Return a JSON representation of a typed array.

Merge two lists, trying to preserve the order of both

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

Chai plugin for JSON Schema v4

Validates if a value is an array.

Validates if a value is an integer array.

Computes the greatest common divisor (gcd).

A utility function to index arrays by any criteria

Array#filter for older browsers.

Safely push each item of an array to a stream

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

Deep-merge the values of one object structure into another

Computes the least common multiple (lcm).

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

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.

Return a data type from a string representing the type

Functional tree editing, manipulation & navigation

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

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.

Create an error from an array of error messages

filter in array tree

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

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

Make any value an array. No dependencies.

Shuffle and unshuffle an array by seed/key.

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

creates a new array with given range

Asynchronous iterator function for parallel processing.

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

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

Multidimensional Arrays

Array / Arraylike utilities

Returns an array filled with the specified input

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.

A map function that can map over almost anything.

Watch an object or array for changes

Microsoft sucks

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.

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

Flatten a nested array.

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

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

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.

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

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

Check whether a value is "empty".

`[].reduce()` for old browsers

Extensible deep value equivalence checking for any data types

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

Convert base64/datauri/plain string to ArrayBuffer

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

Generates an array of consecutive integers starting at 0

Copies missing properties to the target object.

Prettier plugin to force all arrays to be multiline.

Bind data arrays to any type of JS objects

Object/Array shallow copy

remove items from a javascript array without generating memory garbage

Convert Gitignore to Glob patterns

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

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.

Removes specified values from the end of an array.

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

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

Reuse typed arrays

Recursively iterates over arrays and objects

Sort an array on an object property

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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.

Rearrange array elements by index array

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

Lazily initialized properties for objects

Rotate all items in an array

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

Find [nd-]array min/max values

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

Simple iterator for flat and multi section lists