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https://github.com/Rich-Harris/packd
Rollup as a service (with a little help from Browserify)
https://github.com/Rich-Harris/packd
Last synced: 16 days ago
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Rollup as a service (with a little help from Browserify)
- Host: GitHub
- URL: https://github.com/Rich-Harris/packd
- Owner: Rich-Harris
- License: mit
- Created: 2017-03-30T17:14:12.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2022-12-09T13:38:32.000Z (almost 2 years ago)
- Last Synced: 2024-04-14T11:59:02.392Z (7 months ago)
- Language: JavaScript
- Homepage: https://packd.now.sh
- Size: 551 KB
- Stars: 253
- Watchers: 8
- Forks: 32
- Open Issues: 61
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
Awesome Lists containing this project
README
# packd
[Rollup](https://rollupjs.org) as a service (with a little help from [Browserify](http://browserify.org/)).
* [bundle.run](https://bundle.run) — CDN
* [packd.now.sh](https://packd.now.sh) — demo instance
This is a simple app for generating UMD bundles of npm packages, similar to [browserify-cdn](https://github.com/jfhbrook/wzrd.in) aka [wzrd.in](https://wzrd.in/). I made it because wzrd.in sometimes goes offline, and I need its functionality for the [Svelte REPL](https://svelte.technology/repl). Unfortunately I couldn't get browserify-cdn to run on [now.sh](https://zeit.co/now), so I decided to roll my own.
And since I was *roll*ing my own, it made sense to use [Rollup](https://rollupjs.org). (Feel free to roll your eyes.) For npm packages that expose [`pkg.module`](https://github.com/rollup/rollup/wiki/pkg.module), such as the [D3 modules](https://github.com/d3), this means you get smaller, more efficient bundles than with browserify-cdn. packd also gzips the files it serves, typically resulting in much smaller requests.
Since Rollup can't handle all of the CommonJS code on npm, packd will use Browserify (or a combination of Rollup and Browserify) where appropriate.
## Using packd
You can try a hosted version of packd at https://bundle.run.
Bundles can be accessed [like so](https://bundle.run/left-pad). Bear in mind that if a bundle isn't cached, it needs to be installed and built before it can be served, which may take a little while:
```
/[name]
```
You can specify a tag (e.g. 'latest') or a version (e.g. '1.2.3'):
```
/[name]@latest
```
If you're using these URLs with `` tags, you may need to specify the module's name (i.e. the global variable name used to access it, corresponding to `moduleName` in Rollup and `standalone` in Browserify). packd will guess based on the module ID, but you may need to control it with the `name` query:
```
/underscore?name=_
```
By default, Packd will generate a UMD bundle. In some cases, you can generate an ES module bundle instead, by appending `?format=esm`. This only works if the requested package, and all its dependents, are themselves distributed as ES modules.
```
/the-answer?format=esm
```
## Hosting an instance
packd is a straightforward Express app — clone this repo, `npm install` (or `yarn install`), then `npm start`. To host on [now](https://zeit.co/now), simply `npm install -g now` and run `now`.
## Is this like unpkg.com?
No. [unpkg.com](https://unpkg.com) is like a CDN for npm — it serves the actual files in npm packages. In a lot of cases that's perfect, but since some library authors don't include distributable bundles (tsk, tsk) it's not a general solution to the problem that packd addresses. Moreover, many npm package authors don't minify their code, whereas packd does.
It is, however, blazing fast and extremely reliable. If a distributable version of a dependency *is* on unpkg, you should always prefer that.
## Credits
Thanks to [James Halliday](https://github.com/substack) and [Joshua Holbrook](https://github.com/jfhbrook) for their work on Browserify and browserify-cdn, and [Zeit](https://zeit.co) for making such an easy to use hosting environment.
## License
[MIT](LICENSE)