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const { open } = require('@npmcli/promise-spawn')
const { output, input } = require('proc-log')
const { URL } = require('node:url')
const readline = require('node:readline/promises')
const { once } = require('node:events')
const assertValidUrl = (url) => {
try {
if (!/^https?:$/.test(new URL(url).protocol)) {
throw new Error()
}
} catch {
throw new Error('Invalid URL: ' + url)
}
}
const outputMsg = (json, title, url) => {
if (json) {
output.buffer({ title, url })
} else {
output.standard(`${title}:\n${url}`)
}
}
// attempt to open URL in web-browser, print address otherwise:
const openUrl = async (npm, url, title, isFile) => {
url = encodeURI(url)
const browser = npm.config.get('browser')
const json = npm.config.get('json')
if (browser === false) {
outputMsg(json, title, url)
return
}
// We pass this in as true from the help command so we know we don't have to
// check the protocol
if (!isFile) {
assertValidUrl(url)
}
try {
await input.start(() => open(url, {
command: browser === true ? null : browser,
}))
} catch (err) {
if (err.code !== 127) {
throw err
}
outputMsg(json, title, url)
}
}
// Prompt to open URL in browser if possible
const openUrlPrompt = async (npm, url, title, prompt, { signal }) => {
const browser = npm.config.get('browser')
const json = npm.config.get('json')
assertValidUrl(url)
outputMsg(json, title, url)
if (browser === false || !process.stdin.isTTY || !process.stdout.isTTY) {
return
}
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
})
try {
await input.read(() => Promise.race([
rl.question(prompt, { signal }),
once(rl, 'error'),
once(rl, 'SIGINT').then(() => {
throw new Error('canceled')
}),
]))
rl.close()
await openUrl(npm, url, 'Browser unavailable. Please open the URL manually')
} catch (err) {
rl.close()
if (err.name !== 'AbortError') {
throw err
}
}
}
// Rearrange arguments and return a function that takes the two arguments
// returned from the npm-profile methods that take an opener
const createOpener = (npm, title, prompt = 'Press ENTER to open in the browser...') =>
(url, opts) => openUrlPrompt(npm, url, title, prompt, opts)
module.exports = {
openUrl,
openUrlPrompt,
createOpener,
}