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index.js
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index.js
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#! /usr/bin/env node
//@flow
import webpack from "webpack";
import path from "path";
import fs from "fs";
import chalk from "chalk";
import minimist from "minimist";
import findUp from "find-up";
import logger from "./logger";
import config from "./webpack.config.js";
import { spawn } from "child_process"
const {
_: [inputPath],
middleware
} = minimist(process.argv.slice(2));
if (typeof inputPath !== "string") {
logger.error("You must provide a valid path to your root App component");
process.exit(1);
}
// $FlowFixMe - for some reason flow isn't picking up the process.exit above
const appPath = path.resolve(process.cwd(), inputPath);
if (!fs.existsSync(appPath)) {
logger.error(`${appPath} is not a valid filepath 😿`);
process.exit(1);
}
let middlewarePath;
if (middleware) {
middlewarePath = path.resolve(process.cwd(), middleware);
if (!fs.existsSync(middlewarePath)) {
logger.error(`${middlewarePath} is not a valid filepath 😿`);
process.exit(1);
}
}
if (!findUp.sync(".babelrc", { cwd: path.dirname(appPath) })) {
logger.info(
`Looks like you don't have a .babelrc file set up for your app 👻`
);
logger.info(
` * by default startd transpiles your app using the react babel preset`
);
logger.info(` * add a .babelrc file for other transpile options`);
}
logger.info("Starting webpack compilation... 🕸");
const appConfig = config.map(singleConfig => ({
...singleConfig,
plugins: [
...singleConfig.plugins,
new webpack.DefinePlugin({
...{ APP_PATH: JSON.stringify(appPath), PORT: 3000 },
...(middleware
? { MIDDLEWARE_PATH: JSON.stringify(middlewarePath) }
: {}),
...(process.env.NODE_ENV === "production"
? {
"process.env": {
"NODE_ENV": JSON.stringify("production")
},
BUNDLE_PATH: JSON.stringify("/" + config[1].output.filename)
}
: {
BUNDLE_PATH: JSON.stringify(
"http://localhost:8080/" + config[1].output.filename
)
})
})
]
}));
let server;
webpack(appConfig, (err, multiStats) => {
if (err || multiStats.hasErrors()) {
// Handle errors here
logger.error(`Webpack ${chalk.red("failed")} to compile 😿`);
multiStats.stats.forEach(stats => {
if (stats.compilation.errors && stats.compilation.errors.length > 0) {
logger.debug(stats.compilation.errors);
}
});
} else {
logger.info(`Webpack comilation ${chalk.green("successful!")} 🍾`);
logger.info("Launching startd server 🛫");
// launch the server
// $FlowFixMe webpack bundle will only exist under /lib
if (server) {
server.kill();
}
server = spawn("node", [path.resolve(__dirname, "server.bundle.js")], {
stdio: 'inherit',
env: process.env,
});
// if we're in development mode, run a dev server in parallel, to enable
// watch mode and hot module replacement for the client code
if (process.env.NODE_ENV !== "production") {
logger.info(
'startd running in dev mode 🛠 make sure to add "--prod" flag when running in production'
);
logger.info("🛠 compiling webpack for dev server... 🕸");
const Koa = require("koa");
const webpackDevMiddleware = require("koa-webpack");
const devApp = new Koa();
const clientConfig = appConfig[1];
webpackDevMiddleware({
config: {
...clientConfig,
output: {
...clientConfig.output,
publicPath: "http://localhost:8080/"
}
},
devMiddleware: {
// since we're running the dev server for the client independently of
// the backend server, we need to specify access control for the request
// from the original host (3000) to connect to the websocket server (8081)
headers: {
"Access-Control-Allow-Origin": "http://localhost:3000"
},
logLevel: "silent",
reporter: () => {
// @TODO should combine this with above
webpack(appConfig, () => {
if (server) {
server.kill();
}
server = spawn("node", [path.resolve(__dirname, "server.bundle.js")], {
stdio: 'inherit',
env: process.env,
});
});
}
}
}).then(middleware => {
logger.info(
`🛠 dev server launched ${chalk.green("successfully!")} 🍾 🛫`
);
logger.info(
`Your app is now listening on ports ${chalk.cyan(
"3000"
)}, ${chalk.cyan("8000")}, and ${chalk.cyan("8081")} 🤘`
);
logger.info(
`You can access your app at ${chalk.underline.magenta(
"http://localhost:3000"
)}
---------------
| browser |
---------------
↙↗ ↖↘
---------------------- ------------------------------
| server | | dev-server |
| (initial response) | | (app bundle) |
| localhost:3000 | | localhost:8080 |
---------------------- | websocket server (for HMR) |
| localhost:8081 |
------------------------------`
);
devApp.use(middleware);
devApp.listen(8080);
});
} else {
logger.info(
`App successfully running production build. Your app is listening on port ${chalk.magenta(
"3000"
)}`
);
}
}
});