| 1 | const https = require('https')
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| 2 | const { URL } = require('url')
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| 3 | module.exports = (urlString) => {
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| 4 | const { host, port, pathname } = new URL(urlString)
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| 5 | return new Promise((resolve, reject) => {
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| 6 | const options = {
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| 7 | host,
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| 8 | port,
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| 9 | path: pathname,
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| 10 | method: 'HEAD'
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| 11 | }
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| 12 | const req = https.request(options, (res) => {
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| 13 | resolve(res.headers)
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| 14 | })
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| 15 | req.end()
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| 16 | })
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| 17 | }
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