JSPM

Find [nd-]array min/max values

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

Determine the minimum array data type of the closest kind necessary for storing a provided scalar value.

Return the minimum accessible index based on a set of provided strided array parameters.

Determine the minimum array data type for storing a provided signed integer value.

Get the Smallest and Largest Possible Numbers for a Typed Array

Finds smallest value.

Memory-Aware Statistical Calculations

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

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

Compute the minimum and maximum linear indices in an underlying data buffer which are accessible to an array view.

Finds smallest value.

Computes the minimum value of an array.

Get the first fulfilled promise that satisfies the provided testing function

Get the first path that exists on disk of multiple paths

Array#isArray for older browsers

Get the native type of a value.

Tiny queue data structure

Finds index of smallest value.

Minimal async jobs utility library, with streams support

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`

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.

User-friendly glob matching

Determines if an object can be used as an array

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

Run an array of functions in parallel

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.

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

Is this value a JS ArrayBuffer?

ES spec-compliant shim for ArrayBuffer.prototype.slice

List of binary file extensions

Robustly get the byte length of a Typed Array

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

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

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

Is this value a JS SharedArrayBuffer?

A simple list of possible Typed Array names.

Robustly get the byte offset of a Typed Array

Flatten nested arrays

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

Compute the minimum linear index in an underlying data buffer accessible to an array view.

A list of SPDX license identifiers

Robustly get the length of a Typed Array

extend like a boss

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

Finds index of smallest value.

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

Convert a value to an array

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

Parse postgres array columns

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

Array manipulation, ordering, searching, summarizing, etc.

TypedArray polyfill for old browsers

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

Calculate the minimum value of a strided array.

Detect whether or not an object is a Typed Array

write logs to js Array

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

Simply swizzle your arguments

Creates a shallow clone of any JavaScript value.

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

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

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

a few common utility template tags for ES2015

Remove duplicate values from an array. Fastest ES5 implementation.

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

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

Sort the keys of an object

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

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

Map `visit` over an array of objects.

Get a compare function for array to sort

Utils for working with JavaScript classes and prototype methods.

Create an array by repeating the given value n times.

Guarantees an array back

Iterator abstraction based on ES6 specification

Recursively flatten an array or arrays.

Create an array without duplicates

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

Turn anything into an array

Isomorphic, functional type-checking for Javascript

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

Join paths and globs.

List of text file extensions

Array methods for ES6 Iterators

Extends the d3 extent functionality to allow multiple accessors, padding and date support

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

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

Finds smallest value.

ES2015 `Array#findIndex()` ponyfill

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

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

Replace or remove multiple items in an array.

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

Removes duplicates from a sorted array in place

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

Like an array, but rounder.

Get the longest item in an array.

Do not repeat anymore your objects transformations.

Concatenate a readable stream's data into a single array

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).

Typescript-compatible minimalistic shallow equality check for arrays/objects

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

List of Markdown file extensions

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

ES spec-compliant shim for TypedArray.prototype.slice

Microsoft sucks

Run an array of functions in series

Validates if a value is an array.

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

Finds largest entry.

Computes the greatest common divisor (gcd).

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

Computes the least common multiple (lcm).

Validates if a value is an integer array.

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

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

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

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

Sort array elements in descending order.

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

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

Faster alternative to javascript's native filter method.

Sort the keys in an object.

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

Sort array elements in ascending order.

Treat multiple buffers as one

Get the last or last n elements in an array.

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

Watch an object or array for changes

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

make a shallow copy of an object or array

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

Safely get deep nested properties using dot notation

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

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

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

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.

Array#filter for older browsers.

Make any value an array. No dependencies.

Multidimensional Arrays

Calculate the minimum value of a strided array.

filter in array tree

An optionally-asynchronous forEach with an interesting interface.

Determine the minimum array data type for storing a provided unsigned integer value.

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

Generates an array of consecutive integers starting at 0

Check whether a value is "empty".

Make array iteration easy when using async/await and Promises

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

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

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

Test if a value is an array.

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

Microsoft sucks

Test if a value is a Uint8Array.

Float64Array.

Calculate the minimum value of a strided array via a callback function.

Uint8Array.

Test if a value is a Uint16Array.

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

Maximum unsigned 32-bit integer.

Float32Array.

Return a data type from a string representing the type

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

Test if a value is a Float64Array.

Sort an array on an object property

Safely push each item of an array to a stream

Test if a value is a Uint32Array.

`[].reduce()` for old browsers

Calculate the minimum value of an array.

Uint32Array.

Uint16Array.

Reuse typed arrays

Test if a value is a Float32Array.

Rotate all items in an array

creates a new array with given range

Rearrange array elements by index array

Initialize an array of arrays to a constant

Deep-merge the values of one object structure into another

Packs an array-of-arrays into a single ndarray

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

A small utility for storing and working with a fixed-length history of (ususally numeric) values.

flattens nested vertex data into a typed array

Computes the dot product between two numeric arrays.

Chai plugin for JSON Schema v4

Convert Buffer to ArrayBuffer

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

Computes the cosine similarity between two arrays.

recursive object extending & overriding

Simple iterator for flat and multi section lists

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

Deep copy objects and arrays

List of getter/setter properties for JavaScript types

Move an array item to a different position

List of properties for JavaScript objects

List of JavaScript types

A utility function to index arrays by any criteria

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

The swiss army knife for binary data in JavaScript.

Calculate the minimum value of an array via a callback function.

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

Extensible deep value equivalence checking for any data types

Randomize the order of the elements in a given array.

Makes easy to convert JSON to CSV

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

Sort an array of integers using Counting sort (where you only have integers and the min and max are known)

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

Array / Arraylike utilities

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

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

Functional tree editing, manipulation & navigation

Usefull array helpers.

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.

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

Recursively iterates over arrays and objects

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

Return true if the given number is even.

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

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

Creates a real Array from almost anything.

Finds smallest value.

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

Merge two lists, trying to preserve the order of both

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

Flatten a nested array.

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

Sort string index ranges

Rotate an array by a given number of steps

Module for working with CIDR (v4, v6)

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.

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

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

List of common default router IP addresses

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

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

Lazily initialized properties for objects

Bind data arrays to any type of JS objects

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

Asynchronous iterator function for parallel processing.

Fast intersection of multiple arrays

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

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.

Check if the given value is an Array

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

Pipe an Array through Node.js streams

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.