127 lines
3.5 KiB
JavaScript
127 lines
3.5 KiB
JavaScript
/**
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
var chalk = require('chalk');
|
|
var execSync = require('child_process').execSync;
|
|
var spawn = require('cross-spawn');
|
|
var opn = require('opn');
|
|
|
|
// https://github.com/sindresorhus/opn#app
|
|
var 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/opn#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 = spawn('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;
|
|
}
|
|
});
|
|
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 `open` to `opn` (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 opn
|
|
// (It will always open new tab)
|
|
try {
|
|
var options = { app: browser };
|
|
opn(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.
|
|
*/
|
|
function openBrowser(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.');
|
|
}
|
|
}
|
|
|
|
module.exports = openBrowser;
|