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Copy pathmiddleware.js
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53 lines (50 loc) 路 1.66 KB
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// Exports
// =============================================================================
export const config = {
matcher: ['/preview/(index.html)?'],
};
// Rewrite rules shared with local server configurations
export const rewriteRules = [
// Replace CDN URLs with local paths
{
match: /https?.*\/CHANGELOG.md/g,
replace: '/CHANGELOG.md',
},
{
// CDN versioned default
// Ex1: //cdn.com/package-name
// Ex2: http://cdn.com/package-name@1.0.0
// Ex3: https://cdn.com/package-name@latest
match: /(?:https?:)*\/\/.*cdn.*docsify[@\d.latest]*(?=["'])/g,
replace: '/dist/docsify.min.js',
},
{
// CDN paths to local paths
// Ex1: //cdn.com/package-name/path/file.js => /path/file.js
// Ex2: http://cdn.com/package-name@1.0.0/dist/file.js => /dist/file.js
// Ex3: https://cdn.com/package-name@latest/dist/file.js => /dist/file.js
match: /(?:https?:)*\/\/.*cdn.*docsify[@\d.latest]*\/(?:dist\/)/g,
replace: '/dist/',
},
];
// Serve virtual /preview/index.html
// Note: See vercel.json for preview routing configuration
// 1. Fetch index.html from /docs/ directory
// 2. Replace CDN URLs with local paths (see rewriteRules)
// 3. Return preview HTML
export default async function middleware(request) {
const { origin } = new URL(request.url);
const indexURL = `${origin}/docs/index.html`;
const indexHTML = await fetch(indexURL).then(res => res.text());
const previewHTML = rewriteRules.reduce(
(html, rule) => html.replace(rule.match, rule.replace),
indexHTML,
);
return new Response(previewHTML, {
status: 200,
headers: {
'content-type': 'text/html',
'x-robots-tag': 'noindex',
},
});
}