mirror of https://github.com/embarklabs/embark.git
115 lines
3.7 KiB
JavaScript
115 lines
3.7 KiB
JavaScript
// Do this as the first thing so that any code reading it knows the right env.
|
|
process.env.BABEL_ENV = 'development';
|
|
process.env.NODE_ENV = 'development';
|
|
|
|
// Makes the script crash on unhandled rejections instead of silently
|
|
// ignoring them. In the future, promise rejections that are not handled will
|
|
// terminate the Node.js process with a non-zero exit code.
|
|
process.on('unhandledRejection', err => {
|
|
throw err;
|
|
});
|
|
|
|
// Ensure environment variables are read.
|
|
require('../config/env');
|
|
|
|
|
|
const fs = require('fs');
|
|
const chalk = require('chalk');
|
|
const webpack = require('webpack');
|
|
const WebpackDevServer = require('webpack-dev-server');
|
|
const clearConsole = require('react-dev-utils/clearConsole');
|
|
const checkRequiredFiles = require('react-dev-utils/checkRequiredFiles');
|
|
const {
|
|
choosePort,
|
|
createCompiler,
|
|
prepareProxy,
|
|
prepareUrls,
|
|
} = require('react-dev-utils/WebpackDevServerUtils');
|
|
const openBrowser = require('react-dev-utils/openBrowser');
|
|
const paths = require('../config/paths');
|
|
const config = require('../config/webpack.config.dev');
|
|
const createDevServerConfig = require('../config/webpackDevServer.config');
|
|
|
|
const useYarn = fs.existsSync(paths.yarnLockFile);
|
|
const isInteractive = process.stdout.isTTY;
|
|
|
|
// Warn and crash if required files are missing
|
|
if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
|
|
process.exit(1);
|
|
}
|
|
|
|
// Tools like Cloud9 rely on this.
|
|
const DEFAULT_PORT = parseInt(process.env.PORT, 10) || 3000;
|
|
const HOST = process.env.HOST || '0.0.0.0';
|
|
|
|
if (process.env.HOST) {
|
|
console.log(
|
|
chalk.cyan(
|
|
`Attempting to bind to HOST environment variable: ${chalk.yellow(
|
|
chalk.bold(process.env.HOST)
|
|
)}`
|
|
)
|
|
);
|
|
console.log(
|
|
`If this was unintentional, check that you haven't mistakenly set it in your shell.`
|
|
);
|
|
console.log(
|
|
`Learn more here: ${chalk.yellow('http://bit.ly/CRA-advanced-config')}`
|
|
);
|
|
console.log();
|
|
}
|
|
|
|
// We require that you explictly set browsers and do not fall back to
|
|
// browserslist defaults.
|
|
const { checkBrowsers } = require('react-dev-utils/browsersHelper');
|
|
checkBrowsers(paths.appPath, isInteractive)
|
|
.then(() => {
|
|
// We attempt to use the default port but if it is busy, we offer the user to
|
|
// run on a different port. `choosePort()` Promise resolves to the next free port.
|
|
return choosePort(HOST, DEFAULT_PORT);
|
|
})
|
|
.then(port => {
|
|
if (port == null) {
|
|
// We have not found a port.
|
|
return;
|
|
}
|
|
const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
|
|
const appName = require(paths.appPackageJson).name;
|
|
const urls = prepareUrls(protocol, HOST, port);
|
|
// Create a webpack compiler that is configured with custom messages.
|
|
const compiler = createCompiler(webpack, config, appName, urls, useYarn);
|
|
// Load proxy config
|
|
const proxySetting = require(paths.appPackageJson).proxy;
|
|
const proxyConfig = prepareProxy(proxySetting, paths.appPublic);
|
|
// Serve webpack assets generated by the compiler over a web server.
|
|
const serverConfig = createDevServerConfig(
|
|
proxyConfig,
|
|
urls.lanUrlForConfig
|
|
);
|
|
const devServer = new WebpackDevServer(compiler, serverConfig);
|
|
// Launch WebpackDevServer.
|
|
devServer.listen(port, HOST, err => {
|
|
if (err) {
|
|
return console.log(err);
|
|
}
|
|
if (isInteractive) {
|
|
clearConsole();
|
|
}
|
|
console.log(chalk.cyan('Starting the development server...\n'));
|
|
openBrowser(urls.localUrlForBrowser);
|
|
});
|
|
|
|
['SIGINT', 'SIGTERM'].forEach(function(sig) {
|
|
process.on(sig, function() {
|
|
devServer.close();
|
|
process.exit();
|
|
});
|
|
});
|
|
})
|
|
.catch(err => {
|
|
if (err && err.message) {
|
|
console.log(err.message);
|
|
}
|
|
process.exit(1);
|
|
});
|