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A lightweight JavaScript date library for parsing, validating, manipulating, and formatting dates.
**[Documentation](http://momentjs.com/docs/)**
## Port to ECMAScript 6 (version 2.10.0)
Moment 2.10.0 does not bring any new features, but the code is now written in
ECMAScript 6 modules and placed inside `src/`. Previously `moment.js`, `locale/*.js` and
`test/moment/*.js`, `test/locale/*.js` contained the source of the project. Now
the source is in `src/`, temporary build (ECMAScript 5) files are placed under
`build/umd/` (for running tests during development), and the `moment.js` and
`locale/*.js` files are updated only on release.
If you want to use a particular revision of the code, make sure to run
`grunt transpile update-index`, so `moment.js` and `locales/*.js` are synced
with `src/*`. We might place that in a commit hook in the future.
## Upgrading to 2.0.0
There are a number of small backwards incompatible changes with version 2.0.0. [See the full descriptions here](https://gist.github.com/timrwood/e72f2eef320ed9e37c51#backwards-incompatible-changes)
* Changed language ordinal method to return the number + ordinal instead of just the ordinal.
* Changed two digit year parsing cutoff to match strptime.
* Removed `moment#sod` and `moment#eod` in favor of `moment#startOf` and `moment#endOf`.
* Removed `moment.humanizeDuration()` in favor of `moment.duration().humanize()`.
* Removed the lang data objects from the top level namespace.
* Duplicate `Date` passed to `moment()` instead of referencing it.
## [Changelog](https://github.com/moment/moment/blob/develop/CHANGELOG.md)
## [Contributing](https://github.com/moment/moment/blob/develop/CONTRIBUTING.md)
We're looking for co-maintainers! If you want to become a master of time please
write to [ichernev](https://github.com/ichernev).
## License
Moment.js is freely distributable under the terms of the [MIT license](https://github.com/moment/moment/blob/develop/LICENSE).
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[license-url]: LICENSE
[npm-url]: https://npmjs.org/package/moment
[npm-version-image]: http://img.shields.io/npm/v/moment.svg?style=flat
[npm-downloads-image]: http://img.shields.io/npm/dm/moment.svg?style=flat
[travis-url]: http://travis-ci.org/moment/moment
[travis-image]: http://img.shields.io/travis/moment/moment/develop.svg?style=flat
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