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const npm = require('../npm.js')
const output = require('./output.js')
const opener = require('opener')
const { URL } = require('url')
const isUrlValid = url => {
try {
return /^(https?|file):$/.test(new URL(url).protocol)
} catch (_) {
return false
}
}
// attempt to open URL in web-browser, print address otherwise:
module.exports = function open (url, errMsg, cb, browser = npm.config.get('browser')) {
function printAlternateMsg () {
const json = npm.config.get('json')
const alternateMsg = json
? JSON.stringify({
title: errMsg,
url,
}, null, 2)
: `${errMsg}:\n ${url}\n`
output(alternateMsg)
}
if (browser === false) {
printAlternateMsg()
return cb()
}
if (!isUrlValid(url))
return cb(new Error('Invalid URL: ' + url))
const command = browser === true ? null : browser
opener(url, { command }, (er) => {
if (er && er.code === 'ENOENT') {
printAlternateMsg()
return cb()
} else
return cb(er)
})
}
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