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https://github.com/detroitenglish/cloudflare-workers-webpack-boilerplate
A superbly simple, minimal-config template for building, bundling and deploying Cloudflare Workers with Webpack 🚀
https://github.com/detroitenglish/cloudflare-workers-webpack-boilerplate
boilerplate bundler cf-workers cloudflare cloudflare-worker cloudflare-workers serverless template webpack
Last synced: 8 days ago
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A superbly simple, minimal-config template for building, bundling and deploying Cloudflare Workers with Webpack 🚀
- Host: GitHub
- URL: https://github.com/detroitenglish/cloudflare-workers-webpack-boilerplate
- Owner: detroitenglish
- License: mit
- Created: 2018-08-23T13:04:57.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2021-05-18T23:59:58.000Z (over 3 years ago)
- Last Synced: 2024-08-01T05:21:23.103Z (3 months ago)
- Topics: boilerplate, bundler, cf-workers, cloudflare, cloudflare-worker, cloudflare-workers, serverless, template, webpack
- Language: JavaScript
- Homepage:
- Size: 1.43 MB
- Stars: 124
- Watchers: 8
- Forks: 12
- Open Issues: 0
-
Metadata Files:
- Readme: README.MD
- License: LICENSE
Awesome Lists containing this project
- awesome-cloudflare - Webpack Boilerplate - Boilerplate to build, bundle and deploy workers with webpack. (Workers / Recipes)
- awesome-cloudflare - Webpack Boilerplate - Boilerplate to build, bundle and deploy workers with webpack. (Workers / Recipes)
README
# Webpack Boilerplate for Cloudflare Workers
A superbly simple, minimal-config launchpad to build, bundle and deploy
Cloudflare Workers with Webpack 🚀
**NOTE**: You should probably just use Cloudflare's official tool, [Wrangler](https://github.com/cloudflare/wrangler), at this point.
## Why this is
Webpack is the recommended means for Cloudflare Worker developers to leverage
`npm`'s massive, modular ecosystem. But to those unfamiliar with Webpack's
~~black magic~~ configuration, it can mean investing countless hours in
tooling-tweaks and `.*rc`-file-fiddling.
So the goal, here, is to provide a fiddle-free, Webpack-powered launchpad with
default settings sane enough for almost any use case.
It'll bundle up your script and dependencies, upload your Worker to Cloudflare,
and even activate its route(s). The world's now yours to `require('🌍')`
### What you configure
- Your Cloudflare credentials
- Your site name (FQDN) or Cloudflare Zone-Id
- (Optional) One or more route matching patterns for your Worker
### What you get
- Transparent, optimized and ready-to-rock Webpack configuration file
- Babel configuration ensuring development-setup build compatibility for Node 8+
and script compatibility with the latest V8 runtime
- On-demand polyfilling in the (very unlikely) event that it's needed
- Baked-in management of route patterns
- Minification of Worker scripts to keep them under the 1MB limit
- A deployable example to demonstrate `require` and other neat features
- Access to secret keys, tokens, and certificates using
[CF-Worker secrets vault](https://developers.cloudflare.com/workers/api/resource-bindings/secrets-vault/)
- **Namespace resource bindings for the funky-fresh new
[Workers KV](https://developers.cloudflare.com/workers/kv/) 👏**
### Requirements
- Node 12 or later
- Cloudflare account with domain
## Quick Start
1. Clone this repository:
```bash
git clone [email protected]:detroitenglish/cloudflare-workers-webpack-boilerplate.git
cd cloudflare-workers-webpack-boilerplate
```
2. Rename `example.env` to `.env` , and add your required Cloudflare
credentials, and either your site name or site's zone-id.
3. Install dependencies with `npm install`
4. Write your worker script in `src/worker.js`
- Install any dependencies for your worker with:
`npm install -P `
- Build a preview of your bundled worker script in `dist/bundled-worker.js`
by running: `npm run build`
5. Build, bundle and launch your ~~minion~~ Worker to the Cloudflare Edge 🚀
using: `npm run deploy`
### Example Cloudflare Worker
A ready-to-rock example Worker script can be found in `src/example.worker.js`.
The example Worker `require()`s
[lodash.sample](https://www.npmjs.com/package/lodash.sample), and uses it to
randomly choose a translation of the word 'hello'.
It then adds a response header in the form of:
```text
x-worker-greeting: , world!
```
#### Using the Example Worker
After completing steps 1-3 above, you can build the example script with
`npm run build:example`
You can deploy it live to your site with `npm run deploy:example`
To get the full experience, create a
[KV Namespace](https://developers.cloudflare.com/workers/api/resource-bindings/kv-namespaces/#body-inner)
and add its `namespace_id` to `src/example.metadata.json`
## Configuration
### Required Config
#### Cloudflare Credentials
The following are **required** in your `.env` file:
- `CLOUDFLARE_AUTH_EMAIL`: Your Cloudflare account email address
- `CLOUDFLARE_AUTH_KEY`: Your Cloudflare API-Key
#### Site Identification
You **must** provide a means of identifying your Cloudflare site deployment
target by defining (in `.env`) either:
- `CLOUDFLARE_ZONE_ID`: The Zone ID to which your worker will be deployed
or
- `CLOUDFLARE_SITE_NAME`: The fully qualified domain name (FQDN) of your site,
e.g. _example.lol_
### Additional Config
More options are defined and described in [`example.env`](./example.env)
## Default Settings & Behaviors (Advanced)
### Minification
Webpack is configured to minify scripts before deployment in order to help keep
your bundled Worker under the 1MB limit.
Building previews with `npm run build` will **not** minify scripts in order to
make debugging easier.
### CloudflareWorkerPlugin
Worker script uploading and route pattern management are handled by the this
same author's
[`cloudflare-worker-webpack-plugin`](https://www.npmjs.com/package/cloudflare-worker-webpack-plugin).
You can review the plugin's source code and documentation
[here](https://github.com/detroitenglish/cloudflare-worker-webpack-plugin).
### Babel Configuration
Babel is configured to let you use JavaScript syntaxes and features that are
supported in the latest version of Chrome, but **not natively supported by
NodeJS**, e.g. `import "statements"` or `{ ...objectSpreadSyntax }`.
On build, Babel will only add polyfills to your bundled script if, after
evaluating your code, it determines a polyfill is necessary for compatibility
with the latest version of Chrome (a _very_ unlikely scenario).
### Custom `.env` Variables
See [`example.env`](./example.env) for details and examples on adding and
injecting custom variables.
### Cloudflare Worker Secrets Vault
See [`example.env`](./example.env) for details and examples on including a
`metadata.json` secrets file.
### Route Patterns
See [`example.env`](./example.env) for details and examples on how route
patterns are parsed and deployed.
## Relevant Resources
- [Cloudflare Workers documentation](https://developers.cloudflare.com/workers/)
- [Clouflare-Worker-Webpack-Plugin documentation](https://github.com/detroitenglish/cloudflare-worker-webpack-plugin)
- [Webpack Config documentation](https://webpack.js.org/configuration/)
- [Babel's `preset-env` documentation](https://babeljs.io/docs/en/next/babel-preset-env.html)
- [`dotenv` documentation](https://github.com/motdotla/dotenv)
## Development
### Testing and Issue Reporting
I am not a Cloudflare employee, so as a peasant my testing is limited to my own
Workers, in my own zones for my own application in production.
So by all means, try to break stuff! And if something goes kaputt, please let me
know by
[creating an issue](https://github.com/detroitenglish/cloudflare-worker-webpack-boilerplate/issues).
### Contributing
PRs are very much welcome 👍
Committing will trigger - and must pass - linting and a few tests
([...which there could be more of!](https://media1.giphy.com/media/74d1H50VBuE2A/giphy.gif))
Fork away!
### Roadmap
Some ideas going forward:
- [x] Replace zone-id requirement with automatic zone-lookup of FQDN
- [ ] Setup CI for deployment tests with the Cloudflare API
- [ ] ~~Support single-shot deployment to multiple zones~~ Meh...
- [x] Add argument parsing (or actual binary?) for deployment via pure CLI
But I'm very open to suggestions - please share your ideas by
[creating an issue](https://github.com/detroitenglish/cloudflare-worker-webpack-boilerplate/issues).
## Software Stuff
### Disclaimer
Other than a happy customer, I am not affiliated with Cloudflare in any way.
Assume in good faith that I have no idea what I'm doing; **REVIEW THE SOURCE**,
and use at your own risk 🙈
### License
[MIT](./LICENSE)