How to setup node with webpack dev server? - node.js

I want to proxy all /bundle urls to webpack dev server.
I have followed the advice from this question which does the same thing.
However, I still can't see my publicFiles served from localhost:8081/bundle? The silly thing is I have another project not based on react which works just fine, but this just says:
Cannot GET /bundle/
when accessing localhost:8081/bundle .
If you can point out what I'm missing I would really appreciate it. It must be something silly since I know this has to work.
Working in development mode
Here is my webpack config
'use strict';
var webpack = require('webpack');
const autoprefixer = require('autoprefixer');
var ExtractTextPlugin = require('extract-text-webpack-plugin');
var CompressionPlugin = require('compression-webpack-plugin');
const SWPrecacheWebpackPlugin = require('sw-precache-webpack-plugin');
let getPlugins;
var isProd = (process.env.NODE_ENV === 'production');
console.log("Production: " + isProd);
let entryFill = null;
let publicPathFill = null;
if (isProd) {
entryFill = {
bootstrap: ['bootstrap/dist/css/bootstrap.css', 'bootstrap/dist/js/bootstrap.js'],
index: ['./src/bundle/index.tsx'],
vendor: ['react', 'react-dom', 'jquery', 'jquery-ui-bundle', "redux-thunk", 'redux', 'react-redux']
}
publicPathFill = "./dist/assets/bundle";
getPlugins = function () {
return [
new SWPrecacheWebpackPlugin(
{
cacheId: 'cleaning-website',
filename: 'service-worker.js',
maximumFileSizeToCacheInBytes: 4194304,
runtimeCaching: [{
handler: 'cacheFirst',
urlPattern: /[.]js$/
}],
}
),
new ExtractTextPlugin("site.css"),
new webpack.optimize.UglifyJsPlugin(),
new webpack.optimize.OccurrenceOrderPlugin(),
//new webpack.optimize.DedupePlugin(),
//new webpack.optimize.CommonsChunkPlugin('vendor', 'vendor.bundle.js'),
//new webpack.optimize.AggressiveMergingPlugin(),
new webpack.ProvidePlugin({
jQuery: 'jquery',
$: 'jquery',
jquery: 'jquery'
})
//new CompressionPlugin({
// asset: "[path].gz[query]",
// algorithm: "gzip",
// test: /\.js$|\.css$|\.tsx$/,
// threshold: 10240,
// minRatio: 0.8
//})
]
}
} else {
entryFill = {
bootstrap: ['bootstrap/dist/css/bootstrap.css', 'bootstrap/dist/js/bootstrap.js', 'webpack/hot/dev-server', 'webpack-dev-server/client?http://localhost:8081'],
index: ['./src/bundle/index.tsx', 'webpack/hot/dev-server', 'webpack-dev-server/client?http://localhost:8081'],
vendor: ['react', 'react-dom', 'jquery', 'jquery-ui-bundle', "redux-thunk", 'redux', 'react-redux', 'webpack/hot/dev-server', 'webpack-dev-server/client?http://localhost:8081']
}
publicPathFill = "http://localhost:8081/bundle/",
//publicPathFill = "/",
getPlugins = function () {
return [
new ExtractTextPlugin("site.css"),
new webpack.HotModuleReplacementPlugin()
]
}
}
module.exports = {
/**
* Entry for all client side code.
* #var {object} entry
*/
entry: entryFill,
plugins: getPlugins(),
output: {
path: publicPathFill,
filename: '[name].js',
libraryTarget: 'umd'
publicPath: 'http://localhost:8081/bundle/'
},
resolve: {
extensions: ["", ".webpack.js", ".web.js", ".ts", ".tsx", ".js"],
//alias: {
// 'react': 'preact-compat',
// 'react-dom': 'preact-compat',
// 'react-router': 'preact-compat'
//}
},
module: {
loaders: [
// { test: /\.(jpe?g|png|gif|svg)$/i, loader: 'url?limit=10000!img?progressive=true'},
{ test: /\.css$/, loader: "style-loader!css-loader" },
{
test: /\.scss$/,
loader: ExtractTextPlugin.extract(
//Need:?modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5] to set the right name for each css!
"style",
"css!postcss-loader!sass")
},
// { test: /bootstrap-sass\/assets\/javascripts\//, loader: 'imports?jQuery=jquery' },
{ test: /\.tsx?$/, loader: "ts-loader" },
{
test: /\.(pug|png|ttf|eot|svg|woff(2)?)(\?[a-z0-9]+)?$/,
loader: 'file-loader'
}
]
},
postcss: function () {
return [autoprefixer(
// { browsers: ['ie 10', 'firefox 20', 'safari 9.1','Chrome ] }
{ browsers: ['> 0%'] }
)];
}
};
and my webpack dev server running in node looks like:
import * as express from 'express';
import * as path from 'path'
let webpack = require('webpack');
let WebpackDevServer = require('webpack-dev-server');
let proxy = require('proxy-middleware');
let url = require('url');
let config = require('../../../webpack.config.js');
import { post } from "./post";
import { pages } from "./pages";
module.exports = function (app: any, passport: any) {
var router = express.Router();
post(router, passport);
pages(router);
if (process.env.NODE_ENV === 'development') {
let base = path.join(__dirname, "..", "..", "assets");
console.log("Base : " + base);
//console.log(__dirname);
let server = new WebpackDevServer(webpack(config), {
//contentBase: base,
hot: true,
quiet: false,
noInfo: false,
publicPath: "/bundle/",
stats: { colors: true }
});
server.listen(8081, "localhost", function () { });
app.use('/bundle', proxy(url.parse('http://localhost:8081/bundle')));
}
app.use('/', router);
};
I serve the html page like so:
import { createStore, bindActionCreators, applyMiddleware } from 'redux';
import { routerReducer } from 'react-router-redux'
import thunkMiddleware from 'redux-thunk'
import * as path from 'path'
import * as fs from "fs";
import { Routes, Navigation, RootReducer } from "../../client/index";
export function pages(router) {
router.get('/*', function (req: any, res: any, next) {
let initial = {};
const store = createStore(RootReducer, initial, applyMiddleware(thunkMiddleware))
const body = ReactDOMServer.renderToString(
<Provider store={store}>
<StaticRouter location={req.url}>
<Routes/>
</StaticRouter>
</Provider>
)
//const nav = ReactDOMServer.renderToString(
// <Navigation/>
//)
const nav = ReactDOMServer.renderToString(
<div> Nav</div>
)
console.log("Body:");
console.log(body);
//const state = store.getState()
const state = {};
res.send(`
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Clement Cleaning</title>
<meta name="description" content="A cleaning business">
<meta name="author" content="Mortonproductions">
<script src="/bundle/bootstrap.js"></script>
<link rel="stylesheet" href="/bundle/site.css">
</head>
<body>
<header>
<h1>
Clement Cleaning
</h1>
<h2>
A cleaning business based in Loch Lomond
</h2>
</header>
<nav>
<div id="react-nav">${nav}</div>
</nav>
<section>
<div id="react-router">${body}</div>
</section>
<footer>
Progressive web app produced my morton productions
</footer>
<script>window.__REDUX_STATE__ = ${JSON.stringify(state)}</script>
<script src="/bundle/vendor.bundle.js"></script>
<script src="/bundle/index.js"></script>
</body>
</html>`
)
});
}

Related

Unhandled Runtime Error ReferenceError: require is not defined (Nextron)

I want to use contextIsolation=true when i enabled contextIsolation=true and use import in renderer file like (import axios from 'axios') [it through this error message]
https://i.stack.imgur.com/b7lsz.png
its webpack error , but having no solution to handle this issue
Preload.js file in nextron main folder
import { contextBridge, ipcRenderer } from 'electron'
//i try both import or require
contextBridge.exposeInMainWorld('electronAPI', {
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})
**Renderer.js **
import React, { useEffect } from 'react';
import Head from 'next/head';
import Link from 'next/link';
//When i import axios here, it doesn't works
import axios from 'axios'
function Home() {
useEffect(() => {
const setButton = document.getElementById('btn')
const titleInput = document.getElementById('title')
setButton.addEventListener('click', () => {
const title = titleInput.value
window.electronAPI?.setTitle(title)
});
data()
}, [])
return (
<React.Fragment>
<Head>
<title>Home - Nextron (with-typescript-tailwindcss)</title>
</Head>
Title: <input id="title" />
<button id="btn" type="button">Set</button>
</React.Fragment>
);
}
export default Home;
Background.ts nextron main folder
import { app, ipcMain, BrowserWindow } from "electron";
import serve from "electron-serve";
import path from "path";
import { createWindow } from "./helpers";
const isProd: boolean = process.env.NODE_ENV === "production";
if (isProd) {
serve({ directory: "app" });
} else {
app.setPath("userData", `${app.getPath("userData")} (development)`);
}
(async () => {
await app.whenReady();
const mainWindow = createWindow("main", {
width: 1000,
height: 600,
webPreferences: {
nodeIntegration:true,
contextIsolation: true,
preload: path.join(__dirname, "preload.js"),
},
});
if (isProd) {
await mainWindow.loadURL("app://./home.html");
} else {
const port = process.argv[2];
await mainWindow.loadURL(`http://localhost:${port}/home`);
mainWindow.webContents.openDevTools();
}
})();
ipcMain.on("set-title", (event, title) => {
const webContents = event.sender;
const win = BrowserWindow.fromWebContents(webContents);
win.setTitle(title);
console.log(title, "title");
});
app.on("window-all-closed", () => {
app.quit();
});
NextConfig.js
module.exports = {
webpack: (config, { isServer }) => {
if (!isServer) {
config.target = 'electron-renderer';
config.node = {
__dirname: true,
};
}
config.output.globalObject = 'this';
return config;
},
};

How to setup webpack-hot-server-middleware with vue-server-renderer and vue-router?

I'm trying to setup an own express server with webpack to use hot module replacement & server side rendering. Everything seems to work except the integration of webpack-hot-server-middleware which needs an express middleware function with (res, req, next) params - but I can't get my head around about how to implement it correctly.
This is my configuration so far:
webpack.config.js
const webpack = require('webpack');
const path = require('path');
const config = [{
name: 'client',
entry: [
'webpack-hot-middleware/client',
'./src/js/entry_client.js'
],
output: {
path: path.resolve(__dirname, 'dist/js/'),
filename: 'app.js'
},
module: {
rules: [{
test: /\.vue$/,
loader: 'vue-loader'
}, {
test: /\.js$/,
exclude: /node_modules/,
loader: 'babel-loader'
}]
},
resolve: {
alias: {
vue$: 'vue/dist/vue.runtime.js'
}
}
}, {
name: 'server',
target: 'node',
entry: './src/js/entry_server.js',
output: {
path: path.resolve(__dirname, 'dist/js/'),
filename: 'app.server.js',
libraryTarget: 'commonjs2'
},
externals: require('webpack-node-externals')(),
module: {
rules: [{
test: /\.vue$/,
loader: 'vue-loader'
}]
},
resolve: {
alias: {
vue$: 'vue/dist/vue.runtime.js',
}
}
}];
if (process.env.NODE_ENV !== 'production') {
config[0].plugins = [new webpack.HotModuleReplacementPlugin()];
}
module.exports = config;
entry_client.js
import {createApp} from './app';
const {app, router} = createApp();
router.onReady(() => {
app.$mount('#app');
});
entry_server.js
import {createApp} from './app';
export default context => {
return new Promise((resolve, reject) => {
const {app, router} = createApp();
router.push(context.url);
router.onReady(() => {
if (!router.getMatchedComponents().length) return reject({code: 404});
resolve(app);
}, reject);
});
};
app.js
import Vue from 'vue';
import App from '../vue/app.vue';
import {createRouter} from './router';
export function createApp() {
const router = createRouter();
const app = new Vue({
router,
render: h => h(App)
});
return {app, router};
}
router.js
import Vue from 'vue';
import Router from 'vue-router';
import Home from '../vue/home.vue';
import About from '../vue/about.vue';
Vue.use(Router);
export function createRouter() {
return new Router({
mode: 'history',
routes: [{
path: '/',
component: Home
}, {
path: '/about',
component: About
}]
});
}
server.js
const express = require('express');
const fs = require('fs');
const path = require('path');
const bundle = require('./dist/js/app.server');
const renderer = require('vue-server-renderer').createRenderer({
template: fs.readFileSync('./src/html/index.html', 'utf-8')
});
const server = express();
// add vue HMR middleware
if (process.env.NODE_ENV !== 'production') {
const webpack = require('webpack');
const compiler = webpack(require('./webpack.config'));
server.use(require('webpack-dev-middleware')(compiler, {
noInfo: true,
serverSideRender: true
}));
server.use(require('webpack-hot-middleware')(compiler.compilers.find(compiler => compiler.name === 'client')));
// server.use(require('webpack-hot-server-middleware')(compiler));
} else {
// static file serving
server.use(require('serve-favicon')(path.join(__dirname, 'src/png/favicon-32x32.png')));
server.use(express.static(path.join(__dirname, 'dist/'), {index: false}));
}
server.get('*', (req, res) => {
bundle.default({url: req.url}).then(app => {
renderer.renderToString(app, {
title: 'Some title',
description: 'Some description'
}, (err, html) => {
if (err) {
console.error('Error in renderToString:', err);
return res.status(500).send('Internal Server Error');
}
res.send(html);
});
}, err => {
if (err.code === 404) return res.status(404).send('Page not found');
console.error(err);
return res.status(500).send('Internal Server Error');
});
});
server.listen(4040);

Getting found-relay to work with universal-webpack

I'm encountering this error on npm run start:
TypeError: Cannot read property 'pathname' of undefined
Which is getting thrown by:
ReactDOMServer.renderToString(element)
Edit: Got some better logging and found that createResolver(fetcher) is returning an object with:
lastQueries: [ undefined, undefined ],
/src/server.js
import path from 'path';
import express from 'express';
import bodyParser from 'body-parser';
import httpProxy from 'http-proxy';
import { getFarceResult } from 'found/lib/server';
import ReactDOMServer from 'react-dom/server';
import serialize from 'serialize-javascript';
import { ServerFetcher } from './fetcher';
import { createResolver, historyMiddlewares, render, routeConfig } from './router';
const {PRIVATE_IP, API_IP, PORT, API_PORT} = process.env;
const publicPath = path.join(__dirname, '/..', 'public');
export default parameters => {
const app = express();
const proxy = httpProxy.createProxyServer({ ignorePath: true });
const proxyOptions = {
target: `http://${API_IP}:${API_PORT}/graphql-api`,
ignorePath: true,
};
function getFromProxy (req, res) {
req.removeAllListeners('data');
req.removeAllListeners('end');
process.nextTick(_ => {
if (req.body) {
req.emit('data', JSON.stringify(req.body));
}
req.emit('end');
});
proxy.web(req, res, proxyOptions);
}
app.use(express.static(publicPath));
app.use(bodyParser.json({ limit: '1mb' }));
app.use('/graphql-api', getFromProxy);
app.use(async (req, res) => {
const fetcher = new ServerFetcher(`http://${PRIVATE_IP}:${PORT}/graphql-api`);
const { redirect, status, element } = await getFarceResult({
url: req.url,
historyMiddlewares,
routeConfig,
resolver: createResolver(fetcher),
render,
});
if (redirect) {
res.redirect(302, redirect.url);
return;
}
res.status(status).send(`
<!DOCTYPE html>
<html lang="en">
...
<body>
<div id="root">${ReactDOMServer.renderToString(element)}</div>
<script>
window.__RELAY_PAYLOADS__ = ${serialize(fetcher, { isJSON: true })};
</script>
<script src="/bundle.js"></script>
</body>
</html>
`);
});
app.listen(PORT, PRIVATE_IP, err => {
if (err) {
console.log(`[Error]: ${err}`);
}
console.info(`[express server]: listening on ${PRIVATE_IP}:${PORT}`);
});
};
Other files:
/package.json
"scripts": {
"schema": "gulp load-schema",
"relay": "relay-compiler --src ./src --schema ./data/schema.graphql",
"start": "npm-run-all schema relay prepare-server-build start-development-workflow",
"start-development-workflow": "npm-run-all --parallel development-webpack-build-for-client development-webpack-build-for-server development-start-server",
"prepare-server-build": "universal-webpack --settings ./webpack.isomorphic.settings.json prepare",
"development-webpack-build-for-client": "webpack-dev-server --hot --inline --config \"./webpack.isomorphic.client.babel.js\" --port 8080 --colors",
"development-webpack-build-for-server": "webpack --watch --config \"./webpack.isomorphic.server.babel.js\" --colors",
"development-start-server": "nodemon \"./start-server.babel\" --watch \"./build/dist/server\"",
...
},
/start-server.babel
require('babel-register')({ ignore: /\/(build|node_modules)\// });
require('babel-polyfill');
require('./src/start-server.js');
/src/start-server
import 'source-map-support/register';
import startServer from 'universal-webpack/server';
import settings from '../webpack.isomorphic.settings.json';
import configuration from '../webpack.config';
startServer(configuration, settings);
/webpack.config
import webpack from 'webpack';
import path from 'path';
import env from 'gulp-env';
import CopyWebpackPlugin from 'copy-webpack-plugin';
import ExtractTextPlugin from 'extract-text-webpack-plugin';
// process.traceDeprecation = true;
if (!process.env.NODE_ENV) {
env({file: './.env', type: 'ini'});
}
const {
NODE_ENV,
PRIVATE_IP,
API_IP,
PORT,
API_PORT,
GOOGLE_ANALYTICS_KEY,
} = process.env;
const PATHS = {
root: path.join(__dirname),
src: path.join(__dirname, 'src'),
public: path.join(__dirname, 'build', 'public'),
shared: path.join(__dirname, 'src', 'shared'),
fonts: path.join(__dirname, 'src', 'shared', 'fonts'),
robots: path.join(__dirname, 'src', 'robots.txt'),
};
let devtool;
const plugins = [
new webpack.DefinePlugin({
'process.env': {
NODE_ENV: JSON.stringify(NODE_ENV),
PRIVATE_IP: JSON.stringify(PRIVATE_IP),
API_IP: JSON.stringify(API_IP),
PORT: JSON.stringify(PORT),
API_PORT: JSON.stringify(API_PORT),
GOOGLE_ANALYTICS_KEY: JSON.stringify(GOOGLE_ANALYTICS_KEY),
},
}),
new ExtractTextPlugin('styles.css'),
];
if (NODE_ENV === 'production') {
devtool = 'source-map';
plugins.push(
new webpack.optimize.UglifyJsPlugin({
compress: {
warnings: false,
screw_ie8: true,
},
}),
new webpack.NoErrorsPlugin(),
new CopyWebpackPlugin([
{ from: PATHS.robots, to: PATHS.public },
]),
);
} else {
devtool = 'eval-source-map';
plugins.push(
new webpack.NamedModulesPlugin(),
);
}
const config = {
devtool,
context: PATHS.root,
entry: [
PATHS.src,
],
output: {
path: PATHS.public,
filename: 'bundle.js',
publicPath: '/',
},
plugins,
module: {
rules: [
{
test: /\.js$/,
include: PATHS.src,
loader: 'babel-loader',
},
{
test: /\.css$/,
include: PATHS.src,
use: ExtractTextPlugin.extract({
fallback: 'style-loader',
use: {
loader: 'css-loader',
options: {
modules: true,
localIdentName: '[name]_[local]__[hash:base64:5]',
},
},
}),
},
{
test: /\.svg$/,
include: PATHS.src,
use: [
{ loader: 'url-loader', options: { limit: 10000 } },
],
},
{
test: /\.png$/,
include: PATHS.src,
use: [
{ loader: 'url-loader', options: { limit: 65000 } },
],
},
{
test: /\.(woff|woff2)$/,
include: PATHS.fonts,
loader: 'url-loader',
options: {
name: 'font/[hash].[ext]',
limit: 50000,
mimetype: 'application/font-woff',
},
},
],
},
resolve: {
modules: [
PATHS.src,
'node_modules',
],
alias: {
root: PATHS.root,
},
},
};
export default config;
/webpack.isomorphic.settings.json
{
"server": {
"input": "./src/server.js",
"output": "./build/dist/server.js"
}
}
/webpack.isomorphic.client.babel.js
import { client } from 'universal-webpack/config';
import settings from './webpack.isomorphic.settings.json';
import configuration from './webpack.config';
export default client(configuration, settings);
/webpack.isomorphic.server.babel.js
import { server } from 'universal-webpack/config';
import settings from './webpack.isomorphic.settings.json';
import configuration from './webpack.config';
export default server(configuration, settings);
/src/fetcher.js
import 'isomorphic-fetch';
// TODO: Update this when someone releases a real, production-quality solution
// for handling universal rendering with Relay Modern. For now, this is just
// enough to get things working.
class FetcherBase {
constructor (url) {
this.url = url;
}
async fetch (operation, variables) {
const response = await fetch(this.url, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({ query: operation.text, variables }),
});
return response.json();
}
}
export class ServerFetcher extends FetcherBase {
constructor (url) {
super(url);
this.payloads = [];
}
async fetch (...args) {
const i = this.payloads.length;
this.payloads.push(null);
const payload = await super.fetch(...args);
this.payloads[i] = payload;
return payload;
}
toJSON () {
return this.payloads;
}
}
export class ClientFetcher extends FetcherBase {
constructor (url, payloads) {
super(url);
this.payloads = payloads;
}
async fetch (...args) {
if (this.payloads.length) {
return this.payloads.shift();
}
return super.fetch(...args);
}
}
/src/router.js
import queryMiddleware from 'farce/lib/queryMiddleware';
import createRender from 'found/lib/createRender';
import makeRouteConfig from 'found/lib/makeRouteConfig';
import Route from 'found/lib/Route';
import { Resolver } from 'found-relay';
import React from 'react';
import { Environment, Network, RecordSource, Store } from 'relay-runtime';
// static
import CorePage from 'core/components/CorePage';
import LoadingComponent from 'core/components/LoadingComponent';
import ErrorComponent from 'core/components/ErrorComponent';
import HomePage from 'home/components/HomePage';
import NotFound from 'not-found/components/NotFoundPage';
// user
import UserContainer from 'user/containers/UserContainer';
import UserContainerQuery from 'user/queries/UserContainerQuery';
export const historyMiddlewares = [queryMiddleware];
export function createResolver (fetcher) {
const environment = new Environment({
network: Network.create((...args) => fetcher.fetch(...args)),
store: new Store(new RecordSource()),
});
return new Resolver(environment);
}
export const routeConfig = makeRouteConfig(
<Route path={'/'} Component={CorePage}>
<Route Component={HomePage} />
<Route
path={'user/:userId'}
Component={UserContainer}
query={UserContainerQuery}
/>
<Route path={'*'} component={NotFound} />
</Route>,
);
export const render = createRender({
renderPending: _ => <LoadingComponent />,
renderError: error => {
console.error(`Relay renderer ${error}`);
return <ErrorComponent />; // renderArgs.retry?
},
});
/src/index.js
import BrowserProtocol from 'farce/lib/BrowserProtocol';
import createInitialFarceRouter from 'found/lib/createInitialFarceRouter';
import React from 'react';
import ReactDOM from 'react-dom';
import injectTapEventPlugin from 'react-tap-event-plugin';
import { AppContainer } from 'react-hot-loader';
import { ClientFetcher } from './fetcher';
import { createResolver, historyMiddlewares, render, routeConfig } from './router';
injectTapEventPlugin();
(async () => {
// eslint-disable-next-line no-underscore-dangle
const fetcher = new ClientFetcher('/graphql-api', window.__RELAY_PAYLOADS__);
const resolver = createResolver(fetcher);
const Router = await createInitialFarceRouter({
historyProtocol: new BrowserProtocol(),
historyMiddlewares,
routeConfig,
resolver,
render,
});
const rootRender = Component => {
ReactDOM.render(
<AppContainer>
<Component resolver={resolver} />
</AppContainer>,
document.getElementById('root'),
);
};
rootRender(Router);
})();
I had some legacy code for a component that was referencing context.router.isActive from when I was using react-router-relay. Getting rid of that cleared up the problem

Truffle solidity loader Not working with Truffle 3.2.1

I was using truffle-webpack-demo but started getting errors since I upgraded to truffle 3.2.1. I found the new branch of the same repo and copied config from there. Which should be working, but now npm start gives me the following error.
Starting the development server...
Failed to compile.
Error in ./contracts/MetaCoin.sol
Module build failed: Error: You must specify the network name to deploy to. (network)
# ./src/components/AccountList/AccountListContainer.js 37:16-49
I have upgraded to the following versions of truffle, webpack-dev-server, webpack and truffle-solidity-loader
truffle-solidity-loader: "git+https://github.com/sogoiii/truffle-solidity-loader.git#1f1e213d52f033b6863218307b8968ae68220fe1"
truffle: 3.2.1
webpack-dev-server: 2.4.1
webpack: 2.2.1
Below is my config/webpack.config.dev.js
var path = require('path')
var autoprefixer = require('autoprefixer')
var webpack = require('webpack')
var HtmlWebpackPlugin = require('html-webpack-plugin')
var precss = require('precss')
// TODO: hide this behind a flag and eliminate dead code on eject.
// This shouldn't be exposed to the user.
var isInNodeModules = path.basename(path.resolve(path.join(__dirname, '..', '..'))) === 'node_modules'
var relativePath = isInNodeModules ? '../../..' : '..'
var isInDebugMode = process.argv.some(arg =>
arg.indexOf('--debug-template') > -1
)
if (isInDebugMode) {
relativePath = '../template'
}
var srcPath = path.resolve(__dirname, relativePath, 'src')
var nodeModulesPath = path.join(__dirname, '..', 'node_modules')
var indexHtmlPath = path.resolve(__dirname, relativePath, 'index.html')
var faviconPath = path.resolve(__dirname, relativePath, 'favicon.ico')
var buildPath = path.join(__dirname, isInNodeModules ? '../../..' : '..', 'build')
var provided = {
'Web3': 'web3'
}
module.exports = {
devtool: 'eval',
entry: [
require.resolve('webpack-dev-server/client') + '?http://localhost:3000',
require.resolve('webpack/hot/dev-server'),
path.join(srcPath, 'index')
],
output: {
// Next line is not used in dev but WebpackDevServer crashes without it:
path: buildPath,
pathinfo: true,
filename: 'bundle.js',
publicPath: '/'
},
resolve: {
root: srcPath,
extensions: ['', '.js'],
alias: {
contracts: path.resolve('contracts'),
// config: require('../truffle').networks.development,
config: path.resolve('truffle.js')
}
},
module: {
preLoaders: [
{
test: /\.js$/,
loader: 'eslint',
include: srcPath
}
],
loaders: [
{
test: /\.js$/,
include: srcPath,
loader: 'babel',
query: require('./babel.dev')
},
{
test: /\.css$/,
include: srcPath,
loader: 'style!css!postcss'
},
{
test: /\.json$/,
loader: 'json'
},
{
test: /\.(jpg|png|gif|eot|svg|ttf|woff|woff2)$/,
loader: 'file'
},
{
test: /\.(mp4|webm)$/,
loader: 'url?limit=10000'
},
{
test: /\.sol/,
loader: 'truffle-solidity',
loaders: ['json-loader', 'truffle-solidity-loader?migrations_directory=' + path.resolve(__dirname, '../migrations') + '&network=development&contracts_build_directory=' + path.resolve(__dirname, '../dist/contracts')]
}
]
},
eslint: {
configFile: path.join(__dirname, 'eslint.js'),
useEslintrc: false
},
postcss: function () {
return [precss, autoprefixer]
},
plugins: [
new HtmlWebpackPlugin({
inject: true,
template: indexHtmlPath,
favicon: faviconPath
}),
new webpack.ProvidePlugin(provided),
new webpack.DefinePlugin({
'myEnv': JSON.stringify(require('../truffle').networks.development),
'process.env.NODE_ENV': '"development"'
}),
new webpack.EnvironmentPlugin(['NODE_ENV']),
new webpack.HotModuleReplacementPlugin()
]
}
Here's my MetaCoin.sol
pragma solidity ^0.4.4;
import "./ConvertLib.sol";
// This is just a simple example of a coin-like contract.
// It is not standards compatible and cannot be expected to talk to other
// coin/token contracts. If you want to create a standards-compliant
// token, see: https://github.com/ConsenSys/Tokens. Cheers!
contract MetaCoin {
mapping (address => uint) balances;
event Transfer(address indexed _from, address indexed _to, uint256 _value);
function MetaCoin() {
balances[tx.origin] = 6000000000;
}
function sendCoin(address receiver, uint amount) returns(bool sufficient) {
if (balances[msg.sender] < amount) return false;
balances[msg.sender] -= amount;
balances[receiver] += amount;
Transfer(msg.sender, receiver, amount);
return true;
}
function getBalanceInEth(address addr) returns(uint){
return convert(getBalance(addr),2);
}
function getBalance(address addr) returns(uint) {
return balances[addr];
}
function convert(uint amount,uint conversionRate) returns (uint convertedAmount)
{
return amount * conversionRate;
}
}
Here's my AccountListContainer.js
import React, { Component } from 'react'
import AccountList from 'components/AccountList/AccountList'
import SendCoin from 'components/SendCoin/SendCoin'
import Contract from 'truffle-contract'
import MetaCoinArtifact from 'contracts/MetaCoin.sol';
const MetaCoin = Contract(MetaCoinArtifact)
import Web3 from 'web3';
const provider = new Web3.providers.HttpProvider('http://localhost:8545')
MetaCoin.setProvider(provider);
class AccountListContainer extends Component {
constructor(props) {
super(props)
this.state = {
accounts: [],
coinbase: ''
}
this._getAccountBalance = this._getAccountBalance.bind(this)
this._getAccountBalances = this._getAccountBalances.bind(this)
}
_getAccountBalance (account) {
return MetaCoin.deployed()
.then(meta => {
return meta.getBalance.call(account, {from: account})
})
.then(function (value) {
return { account: value.valueOf() }
})
.catch(function (e) {
console.log(e)
throw e
})
}
_getAccountBalances () {
this.props.web3.eth.getAccounts(function (err, accs) {
if (err != null) {
window.alert('There was an error fetching your accounts.')
console.error(err)
return
}
if (accs.length === 0) {
window.alert("Couldn't get any accounts! Make sure your Ethereum client is configured correctly.")
return
}
this.setState({coinbase: accs[0]})
var accountsAndBalances = accs.map((account) => {
return this._getAccountBalance(account).then((balance) => { return { account, balance } })
})
Promise.all(accountsAndBalances).then((accountsAndBalances) => {
this.setState({accounts: accountsAndBalances, coinbaseAccount: accountsAndBalances[0]})
})
}.bind(this))
}
componentDidMount() {
const refreshBalances = () => {
this._getAccountBalances()
}
refreshBalances()
setInterval(()=>{
refreshBalances();
return refreshBalances
}, 5000)
}
render() {
return (
<div>
<AccountList accounts={this.state.accounts} />
<SendCoin sender={this.state.coinbase} />
</div>
)
}
}
export default AccountListContainer
Here's the truffle.js
module.exports = {
networks: {
development: {
host: "localhost",
port: 8545,
network_id: "*"
},
staging: {
host: "localhost",
port: 8546,
network_id: 1337
}
}
};
Given the error Module build failed: Error: You must specify the network name to deploy to. (network), I suspect your truffle.js file has not been updated to the new truffle 3 spec.
Review how the config changed at the migration guided. It should look something like.
module.exports = {
networks: {
development: {
host: "localhost",
port: 8545,
network_id: "*"
},
staging: {
host: "localhost",
port: 8546,
network_id: 1337
},
ropsten: {
host: "158.253.8.12",
port: 8545,
network_id: 3
}
}
};

How to implement a react js websocket client?

I want to create a react js application as a web-socket client, In which react js will request a server which I'm already created in node js and working on port no 1234.
I'm beginner to react js. In my application react js client is not requesting to node js server. what I'm missing in following code?
Node_js Server-
var server = require('websocket').server, http = require('http');
require('events').EventEmitter.prototype._maxListeners = 100;
nconf = require('nconf');
var socket = null;
var connection = null;
var filePath = ''
var timeInteval = 0
var LineByLineReader;
var sleep = require('sleep');
function init(){
nconf.argv().env().file({file: 'config.json'});
filePath = nconf.get('file-path');
timeInteval = nconf.get('time-inteval');
}
var main = function () {
init();
socket = new server({
httpServer: http.createServer().listen(1234)
});
console.log('Waiting for Client... On Port No : 1234');
socket.on('request', function (request) {
connection = request.accept(null, request.origin);
var connections = []
connections.push(connection);
console.log(connection.remoteAddress + '=====>>> Connection accepted.');
var lineReader = require('line-reader');
lineReader.eachLine(filePath, function(line, last) {
for (var i = 0; i < connections.length; i++) {
connections[i].sendUTF(line);
}
sleep.sleep(timeInteval)
});
connection.on('message', function (message) {
});
connection.on('close', function (connection) {
console.log('=====>>> Connection closed');
var index = connections.indexOf(connection);
connections.splice(index, 1);
});
connection.on('error', function (connection) {
console.log(connection.remoteAddress + ' : error');
});
});
}
if (require.main === module) {
main();
}
This node js server is working fine for any number of clients.
App.jsx -
var React = require('react')
var ws = require('ws');
var ReactDOM = require('react-dom');
const Echo = React.createClass({
getInitialState(){
return { messages : [] }
},
componentDidMount: function() {
var wsc = new ws('ws://localhost:1234');
wsc.onmessage = function(message) {
this.setState({ messages: message.data });
}.bind(this);
},
render: function() {
return ( this.state.messages );
}
});
const component = ReactDOM.render(
<Echo />,
document.getElementById('container')
);
index.html-
<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset = "UTF-8">
<title>React App</title>
</head>
<body>
<div id="container">
</div>
<script src = "index.js"></script>
</body>
</html>
webpack.config.js-
var config = {
entry: './App.jsx',
output: {
path:'./',
filename: 'index.js',
},
devServer: {
inline: true,
port: 8090
},
module: {
loaders: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel',
query: {
presets: ['es2015', 'react']
}
}
]
}
}
module.exports = config;

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