wiki.trwnh.com/content/tech/tutorials/sveltekit.md

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2023-01-02 04:52:57 +00:00
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# stuff i learned by me fucking around with sveltekit for a bit
{{<toc>}}
## prerequisites
```sh
npm i -D @sveltejs/adapter-static # for static file output
npm i -D svelte-preprocess # to allow for <style global>
npm i -D html-minifier # to minify html/css/js output
```
## allow global styles
you need to install and initialize svelte-preprocess instead of vitePreprocess if you want to use `<style global>` instead of `:global(selector)` for every single selector
svelte.config.js:
```js
import adapter from '@sveltejs/adapter-static';
import preprocess from 'svelte-preprocess';
/** @type {import('@sveltejs/kit').Config} */
const config = {
kit: {
adapter: adapter()
},
preprocess: [preprocess()]
};
export default config;
```
## static site generation with zero javascript
enable prerendering (keep ssr enabled) to have a static build. if you turn off ssr then your build will be empty
however you can turn off csr to disable routing, and this results in a zero-js build output
src/routes/+layout.js:
```js
import {dev} from '$app/environment'
export const prerender = true;
export const csr = dev;
```
## minifying
if you wanna minify the build output you can create a Handle hook to minify each page before it is server-side-rendered
src/hooks.server.js:
```js
import { minify } from 'html-minifier';
import { building } from '$app/environment';
 
const minification_options = {
collapseBooleanAttributes: true,
collapseWhitespace: true,
conservativeCollapse: true,
decodeEntities: true,
html5: true,
ignoreCustomComments: [/^#/],
minifyCSS: true,
minifyJS: true,
removeAttributeQuotes: true,
removeComments: false, // some hydration code needs comments, so leave them in
removeOptionalTags: true,
removeRedundantAttributes: true,
removeScriptTypeAttributes: true,
removeStyleLinkTypeAttributes: true,
sortAttributes: true,
sortClassName: true
};
 
/** @type {import('@sveltejs/kit').Handle} */
export async function handle({ event, resolve }) {
let page = '';
 
return resolve(event, {
transformPageChunk: ({ html, done }) => {
page += html;
if (done) {
return building ? minify(page, minification_options) : page;
}
}
});
}
```