Array Helpers

Utility functions for working with array operations.

Functions

Function	Description
cartesianProduct	Computes the Cartesian product of the provided arrays.
chunk	Chunks an array into smaller arrays of specified size
compact	Removes all falsy values (false, null, undefined, 0, "", NaN) from an array.
countBy	Groups the elements of an array by the key returned by keyFn and returns a record mapping each key to the number of…
createSortByDateFn	Creates a sort function for objects by date property.
createSortByNaturalFn	Creates a sort function for objects by one or more string properties using natural ordering.
createSortByNumberFn	Creates a sort function for objects by number property.
createSortByStringFn	Creates a sort function for objects by one or more string properties.
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.
equalsDeep	Recursive structural array equality.
equalsShallow	Positional, one-level (shallow) array equality.
equalsUnordered	Order-independent (set-style) array equality.
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.
intersects	Simple helper that check if two lists shared at least an item in common.
isEmpty	Checks if an array is empty (has no elements).
isNonEmpty	Checks if an array is non-empty (has at least one element).
last	native JS Array.prototype.at(-1) (ES2022)
max	Returns the maximum value in an array using a loop instead of spread, avoiding the call stack overflow that occurs wi…
min	Returns the minimum value in an array using a loop instead of spread, avoiding the call stack overflow that occurs wi…
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.
select	Filters and transforms an array in a single pass.
select / filterMap	native JS Array.prototype.filter().map() (ES5)
shuffle	Randomly reorders elements of an array using the Fisher-Yates algorithm.
sort (basic comparator)	native JS (a, b) => a - b / a.localeCompare(b) (ES1)
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
sortStringNaturalAscFn	Sort strings in ascending order using natural (human-friendly) ordering.
sortStringNaturalAscInsensitiveFn	Sort strings in ascending natural order (case insensitive).
sortStringNaturalDescFn	Sort strings in descending order using natural (human-friendly) ordering.
sortStringNaturalDescInsensitiveFn	Sort strings in descending natural order (case insensitive).
tail	native JS Array.prototype.slice(1) (ES3)
take	native JS Array.prototype.slice(0, n) (ES3)
union	native JS unique([...a, ...b]) (ES2015)
unique	Removes duplicate values from an array
unzip	Splits an array of tuples into separate arrays, one per position.
without	Returns a new array with all occurrences of the given values removed.
zip	Combines multiple arrays element-by-element into an array of tuples.