Articles
7 projects
module-best-practicesA collection of best practices for writing focused, reusable JavaScript modules for Node.js and the browser.
Array
16 projects
is-sortedA small JavaScript module to check if an array is sorted, with support for custom comparators.
array-firstA utility library to get the first element or first n elements from an array.
array-lastA fast utility to get the last element or last n elements from an array.
arr-flattenRecursively flatten nested arrays with the fastest JavaScript implementation available.
dedupeA lightweight JavaScript utility for removing duplicate values from arrays, supporting both primitive and complex types.
array-rangeCreates a new dense array with a specified numeric range for functional programming.
arr-diffReturns the difference between the first array and additional arrays using strict equality.
filled-arrayA utility function that creates an array filled with a specified value or generated by a function.
map-arrayA utility function that maps object keys and values into an array using a custom callback.
in-arrayA fast utility to check if a value exists in an array, handling null values safely.
unordered-array-removeEfficiently removes an element from an unordered array by swapping with the last element instead of splicing.
array-swapSwaps the position of two items in an array without mutating the original array.
mirrarrayA lightweight NPM module that creates a keymirror object from an array of strings or other primitive values.
group-arrayGroup an array of objects into nested lists based on one or more property values.
array.chunkA JavaScript utility to split arrays and TypedArrays into chunks of a specified size.
fast-cartesianA high-performance JavaScript library for computing cartesian products of arrays.
String
14 projectsdecamelizeConvert camelCase strings to lowercase with custom separators like unicornRainbow → unicorn_rainbow.
pad-leftA fast JavaScript library for left-padding strings with zeros or custom characters.
to-camel-caseto-capital-caseto-no-caseto-snake-caseto-title-case
node-slugA Node.js library that converts strings to URL-safe slugs, handling Unicode characters and symbols.
rtrimA Node.js module to strip whitespace or custom characters from the end of strings without dependencies.
slice.jsA nano library that enhances JavaScript String.substring and Array.slice with Python-style slicing using Proxy.
strip-ansiStrip ANSI escape codes from strings with consistent behavior across Node.js versions.
striptagsA TypeScript implementation of PHP's strip_tags for safely removing HTML tags from strings.
parse-next-json-valueA parser that extracts the first valid JSON value from a string, ignoring any trailing characters.
pluralizeA tiny JavaScript library for pluralizing words with a lightweight and friendly API.
Date & Time
9 projectspretty-msConvert milliseconds to human-readable time strings with customizable formatting options.
hirestimeA thin cross-platform wrapper for high-resolution time measurement using Node.js process.hrtime and browser Performance API.
periodsProvides time-period constants in milliseconds for JavaScript, exposed as functions to prevent silent NaN errors.
fechaA lightweight JavaScript library for date formatting and parsing, designed as a minimal alternative to moment.js.
akamai-time-referenceA Node.js package to fetch the exact current time using Akamai's Time Reference service.
timeago.jsA tiny JavaScript library for formatting dates into human-readable 'time ago' statements.
count-days-in-monthA JavaScript utility that returns the number of days in a given month, accounting for leap years.
time-stampA lightweight Node.js utility for generating formatted timestamps with customizable patterns.
twasA 280-byte JavaScript function that converts timestamps to human-readable relative time strings like '3 seconds ago'.
Object
21 projectsmap-objA utility to transform object keys and values into a new object with deep recursion and symbol support.
filter-objFilter object keys and values into a new object using predicate functions or key arrays.
object-valuesReturns an array of own enumerable property values from an object.
object-pairsConvert JavaScript objects into arrays of [key, value] pairs for easy iteration and transformation.
zipmapA JavaScript utility that creates an object map from arrays of keys and values, objects, or pairs.
just-pluckA simple JavaScript utility to extract values from an array of objects by key, without unnecessary complexity.
deep-equaldeep-assignRecursive Object.assign() for deep merging JavaScript objects (deprecated).
set-valueSet nested properties on JavaScript objects using dot notation with high performance and extensive options.
get-valueA JavaScript utility to safely retrieve nested values from objects using property paths like 'a.b.c', even when keys contain dots.
has-valueA JavaScript utility that returns true if a value exists and false if empty, supporting deeply nested object paths.
has-key-deepDeep-search JavaScript objects for keys using dot notation or arrays.
flatkeysFlatten object key hierarchies into a list of strings with customizable separators and transformations.
flatten-objConverts deeply nested JavaScript objects into flat key/value pairs with customizable options.
is-empty-objectA lightweight JavaScript utility to check if an object is empty.
stringify-objectStringify JavaScript objects/arrays with clean, quote-minimal syntax and customizable formatting.
sorted-objectReturns a copy of a JavaScript object with its keys sorted for consistent JSON serialization.
missing-deep-keysA JavaScript utility that compares two objects and returns an array of keys present in the first object but missing in the second.
has-own-propertyA utility function to check if an object has a local property, providing a safe alternative to the built-in method.
merge-objectsA Node.js utility for deep merging objects with array concatenation.
deep-object-diffA small JavaScript library for deep diffing two objects, including nested arrays and objects.