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app_vue/node_modules/@vue/cli-shared-utils/lib/openBrowser.js

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+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file at
+ * https://github.com/facebook/create-react-app/blob/master/LICENSE
+ */
+
+const open = require('open')
+const execa = require('execa')
+const chalk = require('chalk')
+const execSync = require('child_process').execSync
+
+// https://github.com/sindresorhus/open#app
+const OSX_CHROME = 'google chrome'
+
+const Actions = Object.freeze({
+  NONE: 0,
+  BROWSER: 1,
+  SCRIPT: 2
+})
+
+function getBrowserEnv () {
+  // Attempt to honor this environment variable.
+  // It is specific to the operating system.
+  // See https://github.com/sindresorhus/open#app for documentation.
+  const value = process.env.BROWSER
+  let action
+  if (!value) {
+    // Default.
+    action = Actions.BROWSER
+  } else if (value.toLowerCase().endsWith('.js')) {
+    action = Actions.SCRIPT
+  } else if (value.toLowerCase() === 'none') {
+    action = Actions.NONE
+  } else {
+    action = Actions.BROWSER
+  }
+  return { action, value }
+}
+
+function executeNodeScript (scriptPath, url) {
+  const extraArgs = process.argv.slice(2)
+  const child = execa('node', [scriptPath, ...extraArgs, url], {
+    stdio: 'inherit'
+  })
+  child.on('close', code => {
+    if (code !== 0) {
+      console.log()
+      console.log(
+        chalk.red(
+          'The script specified as BROWSER environment variable failed.'
+        )
+      )
+      console.log(chalk.cyan(scriptPath) + ' exited with code ' + code + '.')
+      console.log()
+    }
+  })
+  return true
+}
+
+function startBrowserProcess (browser, url) {
+  // If we're on OS X, the user hasn't specifically
+  // requested a different browser, we can try opening
+  // Chrome with AppleScript. This lets us reuse an
+  // existing tab when possible instead of creating a new one.
+  const shouldTryOpenChromeWithAppleScript =
+    process.platform === 'darwin' &&
+    (typeof browser !== 'string' || browser === OSX_CHROME)
+
+  if (shouldTryOpenChromeWithAppleScript) {
+    try {
+      // Try our best to reuse existing tab
+      // on OS X Google Chrome with AppleScript
+      execSync('ps cax | grep "Google Chrome"')
+      execSync('osascript openChrome.applescript "' + encodeURI(url) + '"', {
+        cwd: __dirname,
+        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 = { app: { name: browser }, url: true }
+    open(url, options).catch(() => {}) // Prevent `unhandledRejection` error.
+    return true
+  } catch (err) {
+    return false
+  }
+}
+
+/**
+ * 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.
+ */
+exports.openBrowser = function (url) {
+  const { action, value } = getBrowserEnv()
+  switch (action) {
+  case Actions.NONE:
+    // Special case: BROWSER="none" will prevent opening completely.
+    return false
+  case Actions.SCRIPT:
+    return executeNodeScript(value, url)
+  case Actions.BROWSER:
+    return startBrowserProcess(value, url)
+  default:
+    throw new Error('Not implemented.')
+  }
+}