metro/getDevToolsMiddleware.js

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/**
* 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 execFile = require('child_process').execFile;
var fs = require('fs');
var path = require('path');
module.exports = function(options) {
return function(req, res, next) {
if (req.url === '/debugger-ui') {
var debuggerPath = path.join(__dirname, '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, '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') {
var debuggerURL = 'http://localhost:' + options.port + '/debugger-ui';
var script = 'launchChromeDevTools.applescript';
console.log('Launching Dev Tools...');
execFile(
path.join(__dirname, script), [debuggerURL],
function(err, stdout, stderr) {
if (err) {
console.log('Failed to run ' + script, err);
}
console.log(stdout);
console.warn(stderr);
}
);
res.end('OK');
} else {
next();
}
};
};