98 lines
4.7 KiB
Markdown
98 lines
4.7 KiB
Markdown
# caniuse-lite
|
|
|
|
> A smaller version of caniuse-db, with only the essentials!
|
|
|
|
## Why?
|
|
|
|
The full data behind [Can I use][1] is incredibly useful for any front end
|
|
developer, and on the website all of the details from the database are displayed
|
|
to the user. However in automated tools, [many of these fields go unused][2];
|
|
it's not a problem for server side consumption but client side, the less
|
|
JavaScript that we send to the end user the better.
|
|
|
|
caniuse-lite then, is a smaller dataset that keeps essential parts of the data
|
|
in a compact format. It does this in multiple ways, such as converting `null`
|
|
array entries into empty strings, representing support data as an integer rather
|
|
than a string, and using base62 references instead of longer human-readable
|
|
keys.
|
|
|
|
This packed data is then reassembled (via functions exposed by this module) into
|
|
a larger format which is mostly compatible with caniuse-db, and so it can be
|
|
used as an almost drop-in replacement for caniuse-db for contexts where size on
|
|
disk is important; for example, usage in web browsers. The API differences are
|
|
very small and are detailed in the section below.
|
|
|
|
|
|
## API
|
|
|
|
```js
|
|
import * as lite from 'caniuse-lite';
|
|
```
|
|
|
|
### `lite.agents`
|
|
|
|
caniuse-db provides a full `data.json` file which contains all of the features
|
|
data. Instead of this large file, caniuse-lite provides this data subset
|
|
instead, which has the `browser`, `prefix`, `prefix_exceptions`, `usage_global`
|
|
and `versions` keys from the original.
|
|
|
|
In addition, the subset contains the `release_date` key with release dates (as timestamps) for each version:
|
|
```json
|
|
{
|
|
"release_date": {
|
|
"6": 998870400,
|
|
"7": 1161129600,
|
|
"8": 1237420800,
|
|
"9": 1300060800,
|
|
"10": 1346716800,
|
|
"11": 1381968000,
|
|
"5.5": 962323200
|
|
}
|
|
}
|
|
```
|
|
|
|
### `lite.feature(js)`
|
|
|
|
The `feature` method takes a file from `data/features` and converts it into
|
|
something that more closely represents the `caniuse-db` format. Note that only
|
|
the `title`, `stats` and `status` keys are kept from the original data.
|
|
|
|
### `lite.features`
|
|
|
|
The `features` index is provided as a way to query all of the features that
|
|
are listed in the `caniuse-db` dataset. Note that you will need to use the
|
|
`feature` method on values from this index to get a human-readable format.
|
|
|
|
### `lite.region(js)`
|
|
|
|
The `region` method takes a file from `data/regions` and converts it into
|
|
something that more closely represents the `caniuse-db` format. Note that *only*
|
|
the usage data is exposed here (the `data` key in the original files).
|
|
|
|
|
|
## Contributors
|
|
|
|
Thanks goes to these wonderful people ([emoji key](https://github.com/kentcdodds/all-contributors#emoji-key)):
|
|
|
|
<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
|
|
<!-- prettier-ignore -->
|
|
| [<img src="https://avatars.githubusercontent.com/u/1282980?v=3" width="100px;"/><br /><sub><b>Ben Briggs</b></sub>](http://beneb.info)<br />[💻](https://github.com/ben-eb/caniuse-lite/commits?author=ben-eb "Code") [📖](https://github.com/ben-eb/caniuse-lite/commits?author=ben-eb "Documentation") [👀](#review-ben-eb "Reviewed Pull Requests") [⚠️](https://github.com/ben-eb/caniuse-lite/commits?author=ben-eb "Tests") | [<img src="https://avatars.githubusercontent.com/u/1737375?v=3" width="100px;"/><br /><sub><b>Andy Jansson</b></sub>](https://github.com/andyjansson)<br />[💻](https://github.com/ben-eb/caniuse-lite/commits?author=andyjansson "Code") | [<img src="https://avatars1.githubusercontent.com/u/19343?v=4" width="100px;"/><br /><sub><b>Andrey Sitnik</b></sub>](http://twitter.com/sitnikcode)<br />[💻](https://github.com/ben-eb/caniuse-lite/commits?author=ai "Code") | [<img src="https://avatars2.githubusercontent.com/u/947326?v=4" width="100px;"/><br /><sub><b>Igor Deryabin</b></sub>](http://rodweb.ru)<br />[💻](https://github.com/ben-eb/caniuse-lite/commits?author=rodweb "Code") |
|
|
| :---: | :---: | :---: | :---: |
|
|
<!-- ALL-CONTRIBUTORS-LIST:END -->
|
|
|
|
This project follows the [all-contributors](https://github.com/kentcdodds/all-contributors) specification. Contributions of any kind welcome!
|
|
|
|
<img src="https://opensource.nyc3.digitaloceanspaces.com/attribution/assets/SVG/DO_Logo_icon_blue.svg" alt="Digital Ocean logo" width="40" align="left">
|
|
|
|
Big thanks to [DigitalOcean](https://www.digitalocean.com/?utm_source=opensource&utm_campaign=caniuse-lite) for supporting this project by providing their great infrastructure for us.
|
|
|
|
## License
|
|
|
|
The data in this repo is available for use under a CC BY 4.0 license
|
|
(http://creativecommons.org/licenses/by/4.0/). For attribution just mention
|
|
somewhere that the source is caniuse.com. If you have any questions about using
|
|
the data for your project please contact me here: http://a.deveria.com/contact
|
|
|
|
[1]: http://caniuse.com/
|
|
[2]: https://github.com/Fyrd/caniuse/issues/1827
|