56 lines
2.2 KiB
Markdown
56 lines
2.2 KiB
Markdown
# Astro SW
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[](https://www.npmjs.com/package/@ayco/astro-sw)
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[](https://www.npmjs.com/package/@ayco/astro-sw)
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[](#library-size)
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The integration accepts path to your own authored [service worker](https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API) and automatically injects dynamic variables such as `__assets` generated by Astro for caching. The goal is to [invert the control](https://en.wikipedia.org/wiki/Inversion_of_control) (i.e., compared to generating the service worker script code), and let devs retain the flexibility for various [caching strategies](https://developer.chrome.com/docs/workbox/caching-strategies-overview/).
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## Installation
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In your [Astro](https://astro.build) project:
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```bash
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# if using npm
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$ npm i -D @ayco/astro-sw
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# if using pnpm
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$ pnpm add -D @ayco/astro-sw
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```
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## Usage
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Example `astro.config.mjs`
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```js
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import { defineConfig } from "astro/config";
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import node from "@astrojs/node";
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import serviceWorker from "@ayco/astro-sw";
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export default defineConfig({
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output: "server",
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adapter: node({
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mode: "middleware"
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}),
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integrations: [
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serviceWorker({
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path: "./src/sw.js",
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assetCachePrefix: 'cozy-reader',
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})
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]
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});
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```
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## API
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The integration accepts a configuration object of type `ServiceWorkerConfig` with the following properties
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| property | type | required? | notes |
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| --- | --- | --- | --- |
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| path | string | required | path to your *own* service worker script; no surprises & easy debugging |
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| assetCachePrefix | string | optional | cache storage name prefix; useful for debugging |
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| assetCacheVersionID | string | optional | cache storage name versioning; by default, a random UUID is used but you can provide your own for easy debugging & invalidation |
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## Example sw.js
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You can find an example service worker (`example_sw.js`) in the [repository](https://ayco.io/gh/astro-sw), and here's the [raw file](https://raw.githubusercontent.com/ayoayco/astro-sw/main/example_sw.js) too.
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