41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
import etag from 'etag';
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import getContentTypeHeader from '../utils/getContentTypeHeader.js';
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import rewriteBareModuleIdentifiers from '../utils/rewriteBareModuleIdentifiers.js';
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export default function serveJavaScriptModule(req, res) {
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try {
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const code = rewriteBareModuleIdentifiers(
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req.entry.content.toString('utf8'),
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req.packageConfig
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);
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res
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.set({
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'Content-Length': Buffer.byteLength(code),
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'Content-Type': getContentTypeHeader(req.entry.contentType),
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'Cache-Control': 'public, max-age=31536000', // 1 year
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ETag: etag(code),
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'Cache-Tag': 'file, js-file, js-module'
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})
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.send(code);
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} catch (error) {
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console.error(error);
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const errorName = error.constructor.name;
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const errorMessage = error.message.replace(
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/^.*?\/unpkg-.+?\//,
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`/${req.packageSpec}/`
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);
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const codeFrame = error.codeFrame;
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const debugInfo = `${errorName}: ${errorMessage}\n\n${codeFrame}`;
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res
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.status(500)
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.type('text')
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.send(
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`Cannot generate module for ${req.packageSpec}${req.filename}\n\n${debugInfo}`
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);
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}
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}
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