Log In

Npm Date And Time Libraries

Most Popular Npm Date And Time Libraries

NameSizeLicenseAgeLast Published
moment681.9 kBMIT12 Years6 Jul 2022
kind-of7.47 kBMIT9 Years16 Jan 2020
dayjs136.31 kBMIT5 Years1 Jul 2023
moment-timezone231.79 kBMIT10 Years31 Mar 2023
sinon1.25 MBBSD-3-Clause12 Years13 Sep 2023
to-regex-range7.3 kBMIT8 Years7 Apr 2019
luxon868.65 kBMIT6 Years5 Sep 2023
is-extendable2.85 kBMIT8 Years11 Sep 2017
clone-deep3.12 kBMIT9 Years22 Nov 2018
numeral44.32 kBMIT11 Years27 Mar 2017
fecha26.69 kBMIT8 Years15 Apr 2022
react-datepicker102.44 kBMIT9 Years15 Sep 2023
pretty-ms3.66 kBMIT9 Years6 Jun 2022
d3-time-format20.89 kBISC9 Years4 Dec 2021
p-timeout3.81 kBMIT7 Years12 Jun 2023

Chapter 1: When are Date and Time Libraries Useful

In JavaScript programming, date and time libraries are essential tools for managing and manipulating date and time data effectively. Here are some instances where they prove useful:

  • Data Logging: They are useful when creating logs. Timestamps play a crucial role in debugging by helping ascertain when particular events took place.

  • Scheduling: When building applications that involve scheduling events or tasks (like a calendar app, for example), these libraries offer diverse functions that simplify the process.

  • Time-sensitive Applications: In applications where timing is a significant aspect, like auction websites, countdown timers, or clocks, date and time libraries are indispensable.

  • Data Analysis: They are also helpful in applications involving data analysis or time series data, where data is recorded against specific points in time.

  • Handling Timezones: Lastly, they prove beneficial when dealing with different timezones, daylight saving time, and locale-specific formatting.

Chapter 2: What Functionalities do Date and Time Libraries Usually Have

Most date and time libraries available via npm come packed with numerous functionalities. Although the specifics may vary between libraries, they commonly include:

  • Parsing: They can parse a wide range of date and time formats.

  • Formatting: Convert dates and times into human-readable or custom formats.

  • Arithmetic operations: They provide a host of methods to manipulate dates like adding, subtracting, comparing, etc.

  • Timezone handling: They help manage complexities associated with different timezones and daylight saving.

  • Validation: They often have features to validate date and time inputs, ensuring validity and consistency.

Chapter 3: Gotchas/Pitfalls to Look Out For

Despite the power and convenience provided by date and time libraries, it's important to be mindful of certain pitfalls:

  • Timezone Issues: Make sure to handle timezone information accurately. Libraries often use the system's timezone by default, which may not always be the desired behavior.

  • Manipulation Side-Effects: Some libraries mutate the original date object during manipulations, which can lead to unanticipated results. Always confirm the immutability trait of methods.

  • Deprecation: Be aware of deprecated methods and patterns within the libraries, which can cause warnings or even failures in your code.

  • Performance: Some operations in these libraries can be expensive in terms of performance. It's essential to pay attention to the efficiency of your date and time computations, especially in large-scale, real-time applications.

  • Dependency Management: Keep track of any upgrades, patches, or changes in the library to ensure your code remains functional and secure.