Array Helpers

Utility functions for working with array operations.

Functions

Function	Description
chunk	Chunks an array into smaller arrays of specified size
compact	Removes all falsy values (false, null, undefined, 0, "", NaN) from an array.
createSortByDateFn	Creates a sort function for objects by date property
createSortByNumberFn	Creates a sort function for objects by number property
createSortByStringFn	Creates a sort function for objects by string property
deepEquals	Deep comparison of two arrays that only returns true or false.
difference	Returns the difference between two arrays (items in first array but not in second)
drop	native JS Array.prototype.slice(n) (ES3)
ensureArray	Wraps a value in an array if it is not already one.
equals	Simple helper that checks if two lists are identical.
find / findIndex	native JS Array.prototype.find() / findIndex() (ES2015)
flatten / flat	native JS Array.prototype.flat(depth?) (ES2019)
groupBy / group	native JS Object.groupBy(arr, fn) (ES2024)
head / first	native JS Array.prototype.at(0) (ES2022)
includes	native JS Array.prototype.includes() (ES2016)
intersection	Compute the intersection of two arrays, meaning the elements that are present in both arrays.
last	native JS Array.prototype.at(-1) (ES2022)
oneInCommon	Simple helper that check if two lists shared at least an item in common.
partition	Splits an array into two groups based on a predicate function.
range	Generates an array of sequential numbers from start to end (exclusive).
reverse	native JS Array.prototype.toReversed() (ES2023)
sample	Picks one or more random elements from an array.
shallowEquals	Quick comparison of two arrays using JSON.stringify.
shuffle	Randomly reorders elements of an array using the Fisher-Yates algorithm.
sortBy / orderBy	native JS Array.prototype.toSorted(fn?) (ES2023)
sortNumberAscFn	Sort numbers in ascending order
sortNumberDescFn	Sort numbers in descending order
sortStringAscFn	Sort strings in ascending order
sortStringAscInsensitiveFn	Sort strings in ascending order (case insensitive)
sortStringDescFn	Sort strings in descending order
tail	native JS Array.prototype.slice(1) (ES3)
take	native JS Array.prototype.slice(0, n) (ES3)
unique	Removes duplicate values from an array