metro/react-packager/index.js

71 lines
2.0 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';
require('../babelRegisterOnly')([/react-packager\/src/]);
var debug = require('debug');
var Activity = require('./src/Activity');
exports.createServer = createServer;
exports.Activity = Activity;
exports.getOrderedDependencyPaths = function(options, bundleOptions) {
var server = createNonPersistentServer(options);
return server.getOrderedDependencyPaths(bundleOptions)
.then(function(paths) {
server.end();
return paths;
});
};
function enableDebug() {
// react-packager logs debug messages using the 'debug' npm package, and uses
// the following prefix throughout.
// To enable debugging, we need to set our pattern or append it to any
// existing pre-configured pattern to avoid disabling logging for
// other packages
var debugPattern = 'ReactNativePackager:*';
var existingPattern = debug.load();
if (existingPattern) {
debugPattern += ',' + existingPattern;
}
debug.enable(debugPattern);
}
function createServer(options) {
// the debug module is configured globally, we need to enable debugging
// *before* requiring any packages that use `debug` for logging
if (options.verbose) {
enableDebug();
}
var Server = require('./src/Server');
return new Server(omit(options, ['verbose']));
}
function createNonPersistentServer(options) {
Activity.disable();
// Don't start the filewatcher or the cache.
if (options.nonPersistent == null) {
options.nonPersistent = true;
}
return createServer(options);
}
function omit(obj, blacklistedKeys) {
return Object.keys(obj).reduce((clone, key) => {
if (blacklistedKeys.indexOf(key) === -1) {
clone[key] = obj[key];
}
return clone;
}, {});
}