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openBrowser.ts
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openBrowser.ts
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/**
* The following is modified based on source found in
* https://github.com/facebook/create-react-app
*
* MIT Licensed
* Copyright (c) 2015-present, Facebook, Inc.
* https://github.com/facebook/create-react-app/blob/master/LICENSE
*
*/
import { join } from 'node:path'
import { execSync } from 'node:child_process'
import open from 'open'
import spawn from 'cross-spawn'
import colors from 'picocolors'
import type { Logger } from '../logger'
import { VITE_PACKAGE_DIR } from '../constants'
/**
* Reads the BROWSER environment variable and decides what to do with it.
* Returns true if it opened a browser or ran a node.js script, otherwise false.
*/
export function openBrowser(
url: string,
opt: string | true,
logger: Logger
): boolean {
// The browser executable to open.
// See https://github.com/sindresorhus/open#app for documentation.
const browser = typeof opt === 'string' ? opt : process.env.BROWSER || ''
if (browser.toLowerCase().endsWith('.js')) {
return executeNodeScript(browser, url, logger)
} else if (browser.toLowerCase() !== 'none') {
return startBrowserProcess(browser, url)
}
return false
}
function executeNodeScript(scriptPath: string, url: string, logger: Logger) {
const extraArgs = process.argv.slice(2)
const child = spawn(process.execPath, [scriptPath, ...extraArgs, url], {
stdio: 'inherit'
})
child.on('close', (code) => {
if (code !== 0) {
logger.error(
colors.red(
`\nThe script specified as BROWSER environment variable failed.\n\n${colors.cyan(
scriptPath
)} exited with code ${code}.`
),
{ error: null }
)
}
})
return true
}
const supportedChromiumBrowsers = [
'Google Chrome Canary',
'Google Chrome Dev',
'Google Chrome Beta',
'Google Chrome',
'Microsoft Edge',
'Brave Browser',
'Vivaldi',
'Chromium'
]
function startBrowserProcess(browser: string | undefined, url: string) {
// If we're on OS X, the user hasn't specifically
// requested a different browser, we can try opening
// a Chromium browser with AppleScript. This lets us reuse an
// existing tab when possible instead of creating a new one.
const preferredOSXBrowser =
browser === 'google chrome' ? 'Google Chrome' : browser
const shouldTryOpenChromeWithAppleScript =
process.platform === 'darwin' &&
(!preferredOSXBrowser ||
supportedChromiumBrowsers.includes(preferredOSXBrowser))
if (shouldTryOpenChromeWithAppleScript) {
try {
const ps = execSync('ps cax').toString()
const openedBrowser =
preferredOSXBrowser && ps.includes(preferredOSXBrowser)
? preferredOSXBrowser
: supportedChromiumBrowsers.find((b) => ps.includes(b))
// Try our best to reuse existing tab with AppleScript
execSync(
`osascript openChrome.applescript "${encodeURI(
url
)}" "${openedBrowser}"`,
{
cwd: join(VITE_PACKAGE_DIR, 'bin'),
stdio: 'ignore'
}
)
return true
} catch (err) {
// Ignore errors
}
}
// Another special case: on OS X, check if BROWSER has been set to "open".
// In this case, instead of passing the string `open` to `open` function (which won't work),
// just ignore it (thus ensuring the intended behavior, i.e. opening the system browser):
// https://github.com/facebook/create-react-app/pull/1690#issuecomment-283518768
if (process.platform === 'darwin' && browser === 'open') {
browser = undefined
}
// Fallback to open
// (It will always open new tab)
try {
const options: open.Options = browser ? { app: { name: browser } } : {}
open(url, options).catch(() => {}) // Prevent `unhandledRejection` error.
return true
} catch (err) {
return false
}
}