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32 lines
1.1 KiB
JavaScript
32 lines
1.1 KiB
JavaScript
import expressStaticGzip from 'express-static-gzip';
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// Serve brotli-compressed static files if available
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const customCacheControlHandler=(response, path)=>{
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if(path.endsWith('.br')) {
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// Drop .br suffix to help mime understand the actual type of the file
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path = path.slice(0, -3);
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}
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if(path.endsWith('.js') || path.endsWith('.css')) {
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// .js and .css files are allowed to be cached up to 12 hours, but then
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// they must be revalidated to see if there are any updates
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response.setHeader('Cache-Control', 'public, max-age: 43200, must-revalidate');
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} else {
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// Everything else is cached up to a months as we don't update our images
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// or fonts frequently
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response.setHeader('Cache-Control', 'public, max-age=2592000, must-revalidate');
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}
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};
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const init=(pathToAssets)=>{
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return expressStaticGzip(pathToAssets, {
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enableBrotli : true,
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orderPreference : ['br'],
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index : false,
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serveStatic : {
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cacheControl : false, // we are going to use custom cache-control
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setHeaders : customCacheControlHandler
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} });
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};
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export default init;
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