README.md

It's like Lodash for dates

It has 200+ functions for all occasions.
Modular: Pick what you need. Works with webpack, Browserify, or Rollup and also supports tree-shaking.
Native dates: Uses existing native type. It doesn't extend core objects for safety's sake.
Immutable & Pure: Built using pure functions and always returns a new date instance.
TypeScript & Flow: Supports both Flow and TypeScript
I18n: Dozens of locales. Include only what you need.
and many more benefits

The library is available as an npm package. To install the package run:

npm install date-fns --save
# or with yarn
yarn add date-fns

See date-fns.org for more details, API, and other docs.