Date

ES spec-compliant `Date` shim/polyfill/replacement that works as far down as ES3

Modern JavaScript date utility library

A node.js package for Steven Levithan's excellent dateFormat() function.

Formatting Date objects as strings since 2013

Time zone support for date-fns v3 with the Intl API

A requirable version of Date.now()

CLI tool to update caniuse-lite to refresh target browsers from Browserslist config

Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Generic configuration validation tool that helps you with warnings, errors and deprecation messages as well as showing users examples of correct configuration.

Give me a string and I'll tell you if it's a valid npm package license string

Log by overwriting the previous output in the terminal. Useful for rendering progress bars, animations, etc.

Give me a string and I'll tell you if it's a valid npm package name

Pretty datetime: `2014-01-09 06:46:01`

Postgres date column parser

A Minimalist DateTime utility for Node.js and the browser

Get the native type of a value.

simple date math util

Update notifications for your CLI app

Simple update notifier to check for npm updates for cli applications

Date add-ons for Node.js

dates for humans

A service worker helper library that uses the Broadcast Channel API to announce when a cached response has updated

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

Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.

worldwide holidays

Calculates Easter for a given year

parser for worldwide holidays

Chinese Calendar

Revised Bengali Calendar

Listr update renderer

A simple and reusable datepicker component for React

The community edition of the Date and Time Picker components (MUI X).

Lightweight date format and parse

Modern and maintained fork of the template engine consolidation library. Maintained and supported by Forward Email <https://forwardemail.net>, the 100% open-source and privacy-focused email service.

Internationalized calendar, date, and time manipulation utilities

Check if a buffer contains valid UTF-8

A simple utility for precise-dateing functions and classes.

Date range picker component for Bootstrap

Minimalistic update notifications for command line interfaces

Additional date extensions with a chainable api

Abstraction over common javascript date management libraries

A JavaScript mock Date object that can be used to change when "now" is.

Parsing and formatting date strings using IANA time zones for date-fns.

Object schema validation

Parse, validate, manipulate, and display dates

Loosely validate an event.

Abstraction over common javascript date management libraries

Stub TypeScript definitions entry for react-datepicker, which provides its own types definitions

2KB immutable date time library alternative to Moment.js with the same modern API

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