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svelte.config.js
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svelte.config.js
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import adapterNetlify from '@sveltejs/adapter-netlify';
import { mdsvex } from 'mdsvex';
import headings from 'remark-autolink-headings';
import remarkExternalLinks from 'remark-external-links';
import slug from 'remark-slug';
import remarkSetImagePath from './src/lib/utils/remark-set-image-path.js';
import remarkEmbedVideo from './src/lib/utils/remark-embed-video.js';
import remarkLinkWithImageAsOnlyChild from './src/lib/utils/remark-link-with-image-as-only-child.js';
import remarkHeadingsPermaLinks from './src/lib/utils/remark-headings-permalinks.js';
import { toString } from 'mdast-util-to-string';
import rehypeWrap from 'rehype-wrap-all';
import rehypeImgSize from 'rehype-img-size';
import { highlightCode } from './src/lib/utils/highlight.js';
import { mdsvexGlobalComponents } from './src/lib/utils/mdsvex-global-components.js';
import { h } from 'hastscript';
import { visit } from 'unist-util-visit';
import getHeadings from './src/lib/utils/get-headings.js';
import { vitePreprocess } from '@sveltejs/kit/vite';
/** @type {import('@sveltejs/kit').Config} */
const config = {
extensions: ['.svelte', '.md'],
kit: {
adapter: adapterNetlify({
edge: false,
split: false,
}),
// Temporary workaround for https://github.com/sveltejs/kit/issues/8026#issuecomment-1605293431 in dev mode
csrf: {
checkOrigin: process.env.NODE_ENV === 'development' ? false : true,
},
prerender: {
crawl: true,
handleMissingId: 'warn',
handleHttpError: (details) => {
// Handle docs trying to prerender relative links that it can't
if (
details.status == 404 &&
details.path.startsWith('/docs') &&
details.referenceType == 'linked'
) {
console.warn(`PRERENDER ignored route ${details.path}`);
return;
}
throw new Error(
`${details.status} ${details.path} from ${details.referrer}`,
);
},
},
alias: {
$content: 'src/content',
},
},
// options passed to svelte.preprocess (https://svelte.dev/docs#svelte_preprocess)
preprocess: [
vitePreprocess(),
mdsvexGlobalComponents({
dir: `$lib/components`,
list: [['CodeFence', 'code-fence.svelte']],
extensions: ['.md'],
}),
mdsvex({
extensions: ['.md'],
highlight: {
highlighter: highlightCode,
},
rehypePlugins: [
[
rehypeWrap,
{ selector: 'table', wrapper: 'div.overflow-auto' },
],
[rehypeImgSize, { dir: './static' }],
[
/** Custom rehype plugin to add loading="lazy" to all images */
() => {
return (tree) => {
visit(tree, 'element', (node) => {
if (node.tagName === 'img') {
node.properties.loading = 'lazy';
}
});
};
},
],
],
remarkPlugins: [
[
remarkExternalLinks,
{
target: '_blank',
},
],
slug,
[
headings,
{
behavior: 'append',
linkProperties: {},
content: function (node) {
return [
h('span.icon.icon-link header-anchor', {
ariaLabel: toString(node) + ' permalink',
}),
];
},
},
],
remarkSetImagePath,
remarkLinkWithImageAsOnlyChild,
remarkHeadingsPermaLinks,
getHeadings,
[
remarkEmbedVideo,
{
width: 800,
height: 400,
noIframeBorder: true,
},
],
],
}),
],
};
export default config;