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

122 lines
4.0 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';
const chalk = require('chalk');
const formatBanner = require('./formatBanner');
const path = require('path');
const runServer = require('./runServer');
const findSymlinksPaths = require('./findSymlinksPaths');
const NODE_MODULES = path.resolve(__dirname, '..', '..', '..');
/**
* Starts the React Native Packager Server.
*/
function server(argv, config, args) {
args.projectRoots = args.projectRoots.concat(
args.root,
findSymlinksPaths(NODE_MODULES)
);
console.log(formatBanner(
'Running packager on port ' + args.port + '.\n\n' +
'Keep this packager running while developing on any JS projects. ' +
'Feel free to close this tab and run your own packager instance if you ' +
'prefer.\n\n' +
'https://github.com/facebook/react-native', {
marginLeft: 1,
marginRight: 1,
paddingBottom: 1,
})
);
console.log(
'Looking for JS files in\n ',
chalk.dim(args.projectRoots.join('\n ')),
'\n'
);
process.on('uncaughtException', error => {
if (error.code === 'EADDRINUSE') {
console.log(
chalk.bgRed.bold(' ERROR '),
chalk.red('Packager can\'t listen on port', chalk.bold(args.port))
);
console.log('Most likely another process is already using this port');
console.log('Run the following command to find out which process:');
console.log('\n ', chalk.bold('lsof -n -i4TCP:' + args.port), '\n');
console.log('You can either shut down the other process:');
console.log('\n ', chalk.bold('kill -9 <PID>'), '\n');
console.log('or run packager on different port.');
} else {
console.log(chalk.bgRed.bold(' ERROR '), chalk.red(error.message));
const errorAttributes = JSON.stringify(error);
if (errorAttributes !== '{}') {
console.error(chalk.red(errorAttributes));
}
console.error(chalk.red(error.stack));
}
console.log('\nSee', chalk.underline('http://facebook.github.io/react-native/docs/troubleshooting.html'));
console.log('for common problems and solutions.');
process.exit(1);
});
runServer(args, config, () => console.log('\nReact packager ready.\n'));
}
module.exports = {
name: 'start',
func: server,
description: 'starts the webserver',
options: [{
command: '--port [number]',
default: 8081,
parse: (val) => Number(val),
}, {
command: '--host [string]',
default: '',
}, {
command: '--root [list]',
description: 'add another root(s) to be used by the packager in this project',
parse: (val) => val.split(',').map(root => path.resolve(root)),
default: [],
}, {
command: '--projectRoots [list]',
description: 'override the root(s) to be used by the packager',
parse: (val) => val.split(','),
default: (config) => config.getProjectRoots(),
}, {
command: '--assetRoots [list]',
description: 'specify the root directories of app assets',
parse: (val) => val.split(',').map(dir => path.resolve(process.cwd(), dir)),
default: (config) => config.getAssetRoots(),
}, {
command: '--assetExts [list]',
description: 'Specify any additional asset extentions to be used by the packager',
parse: (val) => val.split(','),
default: (config) => config.getAssetExts(),
}, {
command: '--skipflow',
description: 'Disable flow checks'
}, {
command: '--nonPersistent',
description: 'Disable file watcher'
}, {
command: '--transformer [string]',
default: require.resolve('../../packager/transformer'),
description: 'Specify a custom transformer to be used (absolute path)'
}, {
command: '--reset-cache, --resetCache',
description: 'Removes cached files',
}, {
command: '--verbose',
description: 'Enables logging',
}],
};