25 lines
733 B
TypeScript
25 lines
733 B
TypeScript
import {IncomingMessage, ServerResponse} from 'http'
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import generateETag from 'etag'
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import fresh from 'fresh'
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import { isResSent } from '../lib/utils'
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export function sendHTML (req: IncomingMessage, res: ServerResponse, html: string, { generateEtags }: {generateEtags: boolean}) {
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if (isResSent(res)) return
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const etag = generateEtags ? generateETag(html) : undefined
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if (fresh(req.headers, { etag })) {
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res.statusCode = 304
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res.end()
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return
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}
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if (etag) {
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res.setHeader('ETag', etag)
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}
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if (!res.getHeader('Content-Type')) {
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res.setHeader('Content-Type', 'text/html; charset=utf-8')
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}
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res.setHeader('Content-Length', Buffer.byteLength(html))
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res.end(req.method === 'HEAD' ? null : html)
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}
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