react-native/local-cli/server/middleware/getDevToolsMiddleware.js

93 lines
3.2 KiB
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
'use strict';
var child_process = require('child_process');
var execFile = require('child_process').execFile;
var fs = require('fs');
var opn = require('opn');
var path = require('path');
function getChromeAppName() {
switch (process.platform) {
case 'darwin':
return 'google chrome';
case 'win32':
return 'chrome';
default:
return 'google-chrome';
}
}
function launchChromeDevTools(port) {
var debuggerURL = 'http://localhost:' + port + '/debugger-ui';
console.log('Launching Dev Tools...');
opn(debuggerURL, {app: [getChromeAppName()]}, function(err) {
if (err) {
console.error('Google Chrome exited with error:', err);
}
});
}
function escapePath(path) {
return '"' + path + '"'; // " Can escape paths with spaces in OS X, Windows, and *nix
}
function launchDevTools(options, isChromeConnected) {
// Explicit config always wins
var customDebugger = process.env.REACT_DEBUGGER;
if (customDebugger) {
var projects = options.projectRoots.map(escapePath).join(' ');
var command = customDebugger + ' ' + projects;
console.log('Starting custom debugger by executing: ' + command);
child_process.exec(command, function (error, stdout, stderr) {
if (error !== null) {
console.log('Error while starting custom debugger: ' + error);
}
});
} else if (!isChromeConnected()) {
// Dev tools are not yet open; we need to open a session
launchChromeDevTools(options.port);
}
}
module.exports = function(options, isChromeConnected) {
return function(req, res, next) {
if (req.url === '/debugger-ui') {
var debuggerPath = path.join(__dirname, '..', 'util', 'debugger.html');
res.writeHead(200, {'Content-Type': 'text/html'});
fs.createReadStream(debuggerPath).pipe(res);
} else if (req.url === '/debuggerWorker.js') {
var workerPath = path.join(__dirname, '..', 'util', 'debuggerWorker.js');
res.writeHead(200, {'Content-Type': 'application/javascript'});
fs.createReadStream(workerPath).pipe(res);
} else if (req.url === '/launch-safari-devtools') {
// TODO: remove `console.log` and dev tools binary
console.log(
'We removed support for Safari dev-tools. ' +
'If you still need this, please let us know.'
);
} else if (req.url === '/launch-chrome-devtools') {
// TODO: Remove this case in the future
console.log(
'The method /launch-chrome-devtools is deprecated. You are ' +
' probably using an application created with an older CLI with the ' +
' packager of a newer CLI. Please upgrade your application: ' +
'https://facebook.github.io/react-native/docs/upgrading.html');
launchDevTools(options, isChromeConnected);
res.end('OK');
} else if (req.url === '/launch-js-devtools') {
launchDevTools(options, isChromeConnected);
res.end('OK');
} else {
next();
}
};
};