32 lines
1022 B
JavaScript
32 lines
1022 B
JavaScript
import manifest from '../rev-manifest.json';
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const __DEV__ = process.env.NODE_ENV === 'development';
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const manifestPath = '../rev-manifest.json';
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export default function({ globalPrepend = '' } = {}) {
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function rev(manifest, scopedPrepend, asset) {
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return `${globalPrepend}${scopedPrepend}/${ manifest[asset] || asset }`;
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}
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const boundRev = rev.bind(null, manifest);
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return function(req, res, next) {
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// in dev environment, we reread the manifest on every call
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// this means we do not need to restart server on every change to
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// client code
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if (__DEV__) {
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// we first need to remove the manifest from require cache
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delete require.cache[require.resolve(manifestPath)];
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// and re-require
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const manifest = require(manifestPath);
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res.locals.rev = rev.bind(null, manifest);
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return next();
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}
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// in production we take use the initially loaded manifest
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// since this should not change in production
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res.locals.rev = boundRev;
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next();
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};
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}
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