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#!/usr/bin/env node
'use strict';
/* eslint-disable no-shadow, no-console */
const fs = require('fs');
const net = require('net');
const debug = require('debug')('webpack-dev-server');
const importLocal = require('import-local');
const yargs = require('yargs');
const webpack = require('webpack');
const Server = require('../lib/Server');
const setupExitSignals = require('../lib/utils/setupExitSignals');
const colors = require('../lib/utils/colors');
const processOptions = require('../lib/utils/processOptions');
const createLogger = require('../lib/utils/createLogger');
const getVersions = require('../lib/utils/getVersions');
const options = require('./options');
let server;
const serverData = {
server: null,
};
// we must pass an object that contains the server object as a property so that
// we can update this server property later, and setupExitSignals will be able to
// recognize that the server has been instantiated, because we will set
// serverData.server to the new server object.
setupExitSignals(serverData);
// Prefer the local installation of webpack-dev-server
if (importLocal(__filename)) {
debug('Using local install of webpack-dev-server');
return;
}
try {
require.resolve('webpack-cli');
} catch (err) {
console.error('The CLI moved into a separate package: webpack-cli');
console.error(
"Please install 'webpack-cli' in addition to webpack itself to use the CLI"
);
console.error('-> When using npm: npm i -D webpack-cli');
console.error('-> When using yarn: yarn add -D webpack-cli');
process.exitCode = 1;
}
yargs.usage(
`${getVersions()}\nUsage: https://webpack.js.org/configuration/dev-server/`
);
// webpack-cli@3.3 path : 'webpack-cli/bin/config/config-yargs'
let configYargsPath;
try {
require.resolve('webpack-cli/bin/config/config-yargs');
configYargsPath = 'webpack-cli/bin/config/config-yargs';
} catch (e) {
configYargsPath = 'webpack-cli/bin/config-yargs';
}
// eslint-disable-next-line import/no-extraneous-dependencies
// eslint-disable-next-line import/no-dynamic-require
require(configYargsPath)(yargs);
// It is important that this is done after the webpack yargs config,
// so it overrides webpack's version info.
yargs.version(getVersions());
yargs.options(options);
const argv = yargs.argv;
// webpack-cli@3.3 path : 'webpack-cli/bin/utils/convert-argv'
let convertArgvPath;
try {
require.resolve('webpack-cli/bin/utils/convert-argv');
convertArgvPath = 'webpack-cli/bin/utils/convert-argv';
} catch (e) {
convertArgvPath = 'webpack-cli/bin/convert-argv';
}
// eslint-disable-next-line import/no-extraneous-dependencies
// eslint-disable-next-line import/no-dynamic-require
const config = require(convertArgvPath)(yargs, argv, {
outputFilename: '/bundle.js',
});
function startDevServer(config, options) {
const log = createLogger(options);
let compiler;
try {
compiler = webpack(config);
} catch (err) {
if (err instanceof webpack.WebpackOptionsValidationError) {
log.error(colors.error(options.stats.colors, err.message));
// eslint-disable-next-line no-process-exit
process.exit(1);
}
throw err;
}
try {
server = new Server(compiler, options, log);
serverData.server = server;
} catch (err) {
if (err.name === 'ValidationError') {
log.error(colors.error(options.stats.colors, err.message));
// eslint-disable-next-line no-process-exit
process.exit(1);
}
throw err;
}
if (options.socket) {
server.listeningApp.on('error', (e) => {
if (e.code === 'EADDRINUSE') {
const clientSocket = new net.Socket();
clientSocket.on('error', (err) => {
if (err.code === 'ECONNREFUSED') {
// No other server listening on this socket so it can be safely removed
fs.unlinkSync(options.socket);
server.listen(options.socket, options.host, (error) => {
if (error) {
throw error;
}
});
}
});
clientSocket.connect({ path: options.socket }, () => {
throw new Error('This socket is already used');
});
}
});
server.listen(options.socket, options.host, (err) => {
if (err) {
throw err;
}
// chmod 666 (rw rw rw)
const READ_WRITE = 438;
fs.chmod(options.socket, READ_WRITE, (err) => {
if (err) {
throw err;
}
});
});
} else {
server.listen(options.port, options.host, (err) => {
if (err) {
throw err;
}
});
}
}
processOptions(config, argv, (config, options) => {
startDevServer(config, options);
});