REact.js, react-toolbox syntax error? - reactjs

Why am I getting this syntax error??? Driving me nuts, I know its some simple...I basically copied the example code from here:
http://react-toolbox.com/#/components/input
And I am simply trying to import it into here:
Any suggestions are hugely appreciated...
webpack.config.js:
const path = require('path');
const webpack = require('webpack');
const autoprefixer = require('autoprefixer');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
module.exports = {
context: __dirname,
devtool: 'inline-source-map',
entry: [
'webpack-hot-middleware/client',
'./app/index.jsx'
],
output: {
path: path.join(__dirname, 'build'),
filename: 'react-toolbox.js',
publicPath: '/'
},
resolve: {
extensions: ['', '.jsx', '.scss', '.js', '.json'],
modulesDirectories: [
'node_modules',
path.resolve(__dirname, './node_modules')
]
},
module: {
loaders: [
{
test: /(\.js|\.jsx)$/,
exclude: /(node_modules)/,
loader: 'babel',
query: {
presets:['es2015','react']
}
}, {
test: /(\.scss|\.css)$/,
loader: ExtractTextPlugin.extract('style', 'css?sourceMap&modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!postcss!sass?sourceMap!toolbox')
}
]
},
toolbox: {
theme: path.join(__dirname, 'app/toolbox-theme.scss')
},
postcss: [autoprefixer],
plugins: [
new ExtractTextPlugin('react-toolbox.css', { allChunks: true }),
new webpack.HotModuleReplacementPlugin(),
new webpack.NoErrorsPlugin(),
new webpack.DefinePlugin({
'process.env.NODE_ENV': JSON.stringify('development')
})
]
};
package.json:
{
"name": "react-toolbox-example",
"version": "0.11.4",
"description": "A set of complementary tools to ReactJS.",
"author": "React Toolbox Team (http://github.com/react-toolbox)",
"contributors": [
{
"name": "Javi Jimenez Villar",
"url": "http://soyjavi.com/",
"email": "javi.jimenez.villar#gmail.com"
},
{
"name": "Javi Velasco Arjona",
"url": "http://javivelasco.com/",
"email": "javier.velasco86#gmail.com"
}
],
"bugs": {
"url": "https://github.com/react-toolbox/react-toolbox/issues",
"email": "issues#react-toolbox.com"
},
"keywords": [
"react",
"react-component",
"material design",
"toolbox",
"components"
],
"license": "MIT",
"devDependencies": {
"autoprefixer": "6.3.6",
"babel-core": "6.7.7",
"babel-eslint": "6.0.3",
"babel-loader": "^6.0.1",
"babel-plugin-react-transform": "2.0.2",
"babel-preset-es2015": "^6.1.4",
"babel-preset-react": "^6.1.4",
"classnames": "^2.2.1",
"cross-env": "^1.0.1",
"css-loader": "0.23.1",
"express": "^4.13.3",
"extract-text-webpack-plugin": "1.0.1",
"node-sass": "3.4.2",
"normalize.css": "^4.0.0",
"postcss-loader": "0.8.2",
"react": "^15.0.0",
"react-addons-css-transition-group": "^15.0.0",
"react-dom": "^15.0.0",
"react-toolbox": "^0.16.2",
"react-transform-catch-errors": "^1.0.0",
"react-transform-hmr": "^1.0.1",
"redbox-react": "1.2.3",
"sass-loader": "3.2.0",
"style-loader": "0.13.1",
"toolbox-loader": "0.0.3",
"webpack": "1.13.0",
"webpack-dev-middleware": "1.6.1",
"webpack-hot-middleware": "2.10.0"
},
"scripts": {
"start": "node ./server",
"build": "cross-env NODE_ENV=production UV_THREADPOOL_SIZE=100 webpack --config ./webpack.config",
"deploy": "gh-pages -d build"
},
"repository": "github:react-toolbox/react-toolbox-example"
}
.babelrc
{
"presets": ["es2015", "stage-0", "react"]
}
https://github.com/malexanders/react-toolbox-example

Your code is crashing on the class property syntax which is currently a stage 1 Ecmascript proposal. In order for babel to transpile this correctly you need the stage-1 preset. I would say it's pretty common to have the stage-0 preset which includes everything above it as well.
You can even see from your repo's .babelrc file already wanting to include stage-0 preset:
{
"plugins": ["es2015", "stage-0"]
}
However it looks like you're overriding this file in your webpack config using the query key here:
query: {
presets:['es2015', 'react']
}
So what you need to do to fix this is
1) Install stage-0 preset
npm install --save-dev babel-preset-stage-0
2) Add the preset to your webpack.config.js query: presets array
query: {
presets: ['es2015', 'react', 'stage-0']
}

The equals should be a colon. Additionally, there needs to be a comma after the last curly brace.

Related

How to remove source maps from webpack 5 #React.js #webpack 5

The common solution for removing source maps from a CRA build is to add "GENERATE_SOURCEMAPS=false react-scripts build" in package.json build scripts and/or "GENERATE_SOURCEMAPS=false" in the CRA .env file. However, I do not use Create React App. Therefore, "react-scripts build" is not recognized as an internal command, my .env file has no effect on the bundled code, and simply adding "GENERATE_SOURCEMAPS=false" to my build scripts does nothing. I would like to remove source maps from the webpack bundle. Here is my package.json.
{
"name": "reactboilerplate",
"version": "1.0.0",
"description": "boilerplate code",
"main": "index.js",
"presets":
[
"#babel/preset-env",
"#babel/preset-react"
],
"scripts":
{
"build": "cross-env GENERATE_SOURCEMAP=false webpack --watch",
"start": "webpack serve",
"build-prod": "weback -p",
"winBuild": "set \"GENERATE_SOURCEMAP=false\" && build"
},
"keywords": [],
"author": "ziggy",
"license": "NONE",
"devDependencies":
{
"#babel/core": "^7.16.7",
"#babel/preset-env": "^7.16.8",
"#babel/preset-react": "^7.16.7",
"babel-loader": "^8.2.3",
"css-loader": "^6.5.1",
"file-loader": "^6.2.0",
"html-loader": "^3.1.0",
"html-webpack-plugin": "^5.5.0",
"node-polyfill-webpack-plugin": "^1.1.4",
"style-loader": "^3.3.1",
"webpack": "^5.66.0",
"webpack-cli": "^4.9.1",
"webpack-dev-server": "^4.7.3"
},
"dependencies":
{
"#aws-amplify/ui-react": "^2.1.9",
"aws-amplify": "^4.3.12",
"aws-amplify-react": "^5.1.9",
"bootstrap": "^5.1.3",
"pandadoc-node-client": "^4.1.0",
"react": "^17.0.2",
"react-bootstrap": "^2.1.1",
"react-dom": "^17.0.2",
"typewriter-effect": "^2.18.2"
}
}
Here is my webpack.config.js
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const webpack = require('webpack');
const NodePolyfillPlugin = require('node-polyfill-webpack-plugin');
module.exports = {
mode: 'development',
entry: './src/index.js',
output:
{
path: path.resolve(__dirname, 'dist'),
filename: 'bundle.js',
},
resolve:
{
modules: [path.join(__dirname, 'src'), 'node_modules'],
alias: { react: path.join(__dirname, 'node_modules', 'react') }
},
plugins:
[
new NodePolyfillPlugin(),
new HtmlWebpackPlugin({ template: './src/index.html' }),
],
module:
{
rules: [
{
test: /\.css/i,
use: ['style-loader', 'css-loader']
},
{
test: /\.js$/,
exclude: /node_modules/,
use:
{
loader: "babel-loader",
options:
{
presets: ['#babel/preset-env', '#babel/preset-react']
}
}
},
{
test: /\.(png|mp4)$/i,
type: "asset/resource"
},
{
test: /\.txt$/i,
type: 'asset/source'
},
{
test: /\.(woff|woff2|ttf)$/i,
type: "asset/resource"
},
{
test: /\.html$/,
use: ["html-loader"]
},
{
test: /\.(mov|mp4)$/,
use:
[
{
loader: 'file-loader',
options:
{
name: '[name].[ext]'
}
}
]
},
{
test: /\.m?js/,
resolve:
{
fullySpecified: false
}
},
]
}
}

Webpack live reload says "nothing changed" even if I modify a file. Why?

I have a react project and I'm using Webpack (webpack-dev-server) for my development.
Everything compiles well, and when I make a change in my file (for the first time), the live reloading works well.
BUT, after changing the same file twice (or more), the live reloading stop working. In the console it says "nothing changed" even when I made a change.
Looks like the webpack-dev-server memory doesn't pick up the change. Any idea why?
Webpack Config
const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const { ProvidePlugin } = require("webpack");
module.exports = {
target: "web",
mode: "development",
entry: ["regenerator-runtime/runtime.js", "./src/index.js"],
devtool: "inline-source-map",
devServer: {
historyApiFallback: true,
hot: true,
port: 8080,
static: "./dist",
watchFiles: "src/**/*,js",
},
output: {
path: path.resolve(__dirname, "dist"),
filename: "index_bundle.js",
},
resolve: { extensions: ["*", ".js", ".jsx"] },
module: {
rules: [
{
test: /\.(jsx|js)$/,
exclude: /(node_modules)/,
use: [
{
loader: "babel-loader",
options: {
presets: ["#babel/env", "#babel/react"],
},
},
],
},
{
test: /\.css$/,
// exclude: /node_modules/,
use: ["style-loader", "css-loader"],
},
{
test: /\.svg$/,
use: [
{
loader: "svg-url-loader",
options: {
limit: 10000,
},
},
],
},
],
},
plugins: [
new HtmlWebpackPlugin({
template: "src/index.html",
title: "Development",
}),
new ProvidePlugin({
React: "react",
}),
],
};
Package.json
{
"name": "timerfrontend",
"version": "1.0.0",
"main": "index.js",
"babel": {
"presets": [
"#babel/preset-env",
"#babel/preset-react"
]
},
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "webpack serve",
"create": "webpack -w",
"build": "webpack -p"
},
"keywords": [],
"author": "",
"license": "ISC",
"devDependencies": {
"#babel/core": "^7.16.5",
"#babel/preset-env": "^7.16.5",
"#babel/preset-react": "^7.16.5",
"babel-loader": "^8.2.3",
"css-loader": "^6.5.1",
"html-webpack-plugin": "^5.3.1",
"style-loader": "^3.3.1",
"webpack": "^5.65.0",
"webpack-cli": "^4.9.1",
"webpack-dev-server": "^4.6.0"
},
"dependencies": {
"#apollo/client": "^3.5.6",
"#apollo/link-context": "^2.0.0-beta.3",
"#apollo/react-hooks": "^4.0.0",
"#auth0/auth0-react": "^1.8.0",
"apollo-cache-inmemory": "^1.6.6",
"apollo-client": "^2.6.10",
"apollo-link-http": "^1.5.17",
"bootstrap": "^5.0.1",
"dayjs": "^1.10.5",
"npm-force-resolutions": "^0.0.10",
"prop-types": "^15.7.2",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-router-dom": "^6.1.1",
"regenerator-runtime": "^0.13.9",
"svg-url-loader": "^7.1.1"
},
"description": "",
"resolutions": {
"react": "17.0.2",
"graphql": "16.1.0"
}
}
I found the solution (hint: its weird)
I realized that my Webpack live reloading was working on my other components (except the I had issue with).
I finally resolved to deleting that component and create a new one (exact copy) and then it worked perfectly!?
I still don't know why Webpack didn't like this component specifically...
It was happening to me, I checked the files and class names, they have to be exactly the same, including caps and lowercase letters
In my case, the file I was modified is not being use anywhere in project, so webpack does not recognize it.
After import and use it in the code, then it work fine

Jest Unexpected Identifier require

I'm trying to set up Jest to test my app as it grows. I'm getting the below error:
SyntaxError: Unexpected identifier
> 1 | const screenSize = require("../src/index.js").screenSize;
| ^
I'm using Phaser 3, Webpack, Babel, and React.
I'm relatively new to all except React.
I followed Jest's Getting Started tutorial and using with webpack tutorial, but I'm still getting the error.
package.json
{
"name": "phaser3-project-template",
"version": "1.1.0",
"description": "A Phaser 3 Project Template",
"main": "src/index.js",
"scripts": {
"build": "webpack --config webpack/prod.js ",
"start": "webpack-dev-server --config webpack/base.js --open",
"test": "jest"
},
"repository": {
"type": "git",
"url": "git+https://github.com/photonstorm/phaser3-project-template.git"
},
"author": "Richard Davey <rdavey#gmail.com> (http://www.photonstorm.com)",
"license": "MIT",
"licenseUrl": "http://www.opensource.org/licenses/mit-license.php",
"bugs": {
"url": "https://github.com/photonstorm/phaser3-project-template/issues"
},
"homepage": "https://github.com/photonstorm/phaser3-project-template#readme",
"devDependencies": {
"#babel/core": "^7.4.3",
"#babel/plugin-proposal-class-properties": "^7.4.0",
"#babel/preset-env": "^7.4.3",
"#babel/preset-react": "^7.0.0",
"babel-jest": "^24.7.1",
"babel-loader": "^8.0.5",
"clean-webpack-plugin": "^1.0.0",
"file-loader": "^3.0.1",
"html-webpack-plugin": "^3.2.0",
"jest": "^24.7.1",
"path": "^0.12.7",
"raw-loader": "^1.0.0",
"react": "^16.8.6",
"react-dom": "^16.8.6",
"terser-webpack-plugin": "^1.2.1",
"webpack": "^4.28.3",
"webpack-cli": "^3.2.1",
"webpack-dev-server": "^3.1.14",
"webpack-merge": "^4.2.1"
},
"dependencies": {
"babel-core": "^6.26.3",
"babel-preset-es2015": "^6.24.1",
"babel-preset-react": "^6.24.1",
"css-loader": "^2.1.1",
"phaser": "^3.16.2",
"react-redux": "^7.0.2",
"redux": "^4.0.1",
"redux-thunk": "^2.3.0",
"style-loader": "^0.23.1"
},
"jest": {
"modulePaths": [
"node_modules"
],
"moduleFileExtensions": [
"js",
"jsx"
],
"moduleDirectories": [
"node_modules"
],
"moduleNameMapper": {
"\\.(css|less)$": "<rootDir>/__mocks__/styleMock.js",
"\\.(gif|ttf|eot|svg)$": "<rootDir>/__mocks__/fileMock.js"
}
}
}
webpack/base.js
const webpack = require("webpack");
const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const CleanWebpackPlugin = require("clean-webpack-plugin");
module.exports = {
mode: "development",
devtool: "eval-source-map",
entry: "./src/index.js", //do we need this?
output: {
path: path.resolve("dist"),
filename: "index_bundle.js"
},
module: {
rules: [
{
test: /\.css$/,
use: [{ loader: "style-loader" }, { loader: "css-loader" }]
},
{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: "babel-loader"
}
},
{
test: /\.jsx?$/,
exclude: /node_modules/,
use: "babel-loader"
},
{
test: [/\.vert$/, /\.frag$/],
use: "raw-loader"
},
{
test: /\.(gif|png|jpe?g|svg|xml)$/i,
use: "file-loader"
}
]
},
plugins: [
new CleanWebpackPlugin(["dist"], {
root: path.resolve(__dirname, "../")
}),
new webpack.DefinePlugin({
CANVAS_RENDERER: JSON.stringify(true),
WEBGL_RENDERER: JSON.stringify(true)
}),
new HtmlWebpackPlugin({
template: "./index.html",
filename: "index.html",
inject: "body"
})
]
};
.babelrc.js
const presets = [
[
"#babel/env",
{
targets: {
browsers: [">0.25%", "not ie 11", "not op_mini all"],
node: "current"
},
modules: false
}
],
"#babel/preset-react"
];
const plugins = ["#babel/plugin-proposal-class-properties"];
module.exports = { presets, plugins };
jest.config.js
"use strict";
module.exports = {
testMatch: ["<rootDir>/**/*.test.js"],
testPathIgnorePatterns: ["/src/", "node_modules"]
};
index.test.js
const screenSize = require("../src/index.js").screenSize;
//import toBeType from "jest-tobetype";
console.log(screenSize);
test("screenSize is an object", () => {
expect(typeof screenSize).toBe("object");
});
Github Repo
How can I get Jest to process the es6 syntax?
Require is a node environment syntax for importing variables, and Jest runs in node. More background on the differences between import/require and node can be seen in this SO question
You can add support for this with
npm install --save-dev #babel/plugin-proposal-class-properties #babel/plugin-transform-modules-commonjs
and include these as presets in your babelrc.js
const presets = [
[
"#babel/env",
{
targets: {
browsers: [">0.25%", "not ie 11", "not op_mini all"]
},
modules: false
}
],
"#babel/preset-react"
];
const plugins = [
"#babel/plugin-proposal-class-properties",
"#babel/plugin-transform-modules-commonjs"
];
module.exports = { presets, plugins };
The above code will still run into a number of errors details to resolve those can be seen here: https://medium.com/#Tnodes/setting-up-jest-with-react-and-phaser-422b174ec87e

ERROR from UglifyJs Unexpected token keyword, expected punc

I'm getting the following error when trying to run npm install on my project: ERROR in bundle.js from UglifyJs
Unexpected token keyword «function», expected punc «,»
I'm aware it's because I'm trying to use an ES6 feature, but I think something is wrong with my setup which is why it isn't getting compiled to ES5 by Babel.
I've looked at a number of problems on SO regarding the issue, and I've incorporated some of those answers, but none has solved the problem.
Here is my package.json:
{
"name": "my-project",
"version": "0.0.1",
"engines": {
"node": "8.9.1"
},
"private": true,
"scripts": {
"dev": "webpack --progress --colors --watch",
"postinstall": "NODE_ENV=prod webpack -p"
},
"dependencies": {
"babel-core": "^6.7.4",
"babel-loader": "^7.1.2",
"babel-plugin-transform-react-jsx": "^6.1.18",
"babel-preset-es2015": "^6.6.0",
"babel-preset-react": "^6.5.0",
"body-parser": "^1.18.2",
"express": "^4.16.2",
"material-ui": "^0.20.0",
"react": "^16.2.0",
"react-dom": "^16.2.0",
"react-player": "^1.1.2",
"react-render": "^1.2.1",
"webpack": "^3.11.0",
"yargs": "^11.0.0"
},
"babel": {
"plugins": [
"transform-react-jsx"
],
"presets": [
"es2015",
"react"
]
},
"devDependencies": {
"uglifyjs-webpack-plugin": "^1.2.0"
}
}
and my webpack.config.babel.js
var UglifyJSPlugin = require('uglifyjs-webpack-plugin');
module.exports = {
context: __dirname + "/static",
entry: {
client: ['./App.js']
},
output: {
filename: 'bundle.js',
path: __dirname + "/static/build"
},
resolve: {
extensions: ['*', '.js']
},
plugins: [
new UglifyJSPlugin({
include: /\.min\.js$/
})
],
module: {
loaders: [
{
test: /(\.js$)/,
loader: 'babel-loader',
exclude: /node_modules/,
query: {
presets: [
'react',
['es2015', {'modules': false}]
]
}
}
]
}
};

React via Webpack - Production flag increases file size

I'm pretty new to using React and Webpack so I'm likely doing something wrong, but when I build with the -p production flag my file size is considerably bigger (3.26MB vs 2.23MB) than when I build without.
package.json:
{
"name": "myProject",
"version": "0.0.1",
"description": "",
"main": "webpack.config.js",
"dependencies": {
"babel-loader": "^6.2.0",
"babel-plugin-add-module-exports": "^0.1.2",
"babel-plugin-react-html-attrs": "^2.0.0",
"babel-plugin-transform-class-properties": "^6.3.13",
"babel-plugin-transform-decorators-legacy": "^1.3.4",
"babel-preset-es2015": "^6.3.13",
"babel-preset-react": "^6.3.13",
"babel-preset-stage-0": "^6.3.13",
"flux": "^2.1.1",
"history": "^1.17.0",
"react": "^0.14.6",
"react-dom": "^0.14.6",
"react-router": "^1.0.3",
"webpack": "^1.12.9",
"webpack-dev-server": "^1.14.1"
},
"devDependencies": {},
"scripts": {
"dev": "webpack-dev-server --content-base src --inline --hot",
"build": "webpack",
"build-p": "webpack -p"
},
"author": ""
}
webpack.config.js:
var debug = process.env.NODE_ENV !== "production";
var webpack = require('webpack');
var path = require('path');
module.exports = {
context: path.join(__dirname, "src"),
devtool: debug ? "inline-sourcemap" : null,
entry: "./js/app.js",
module: {
loaders: [
{
test: /\.jsx?$/,
exclude: /(node_modules|bower_components)/,
loader: 'babel-loader',
query: {
presets: ['react', 'es2015', 'stage-0'],
plugins: ['react-html-attrs', 'transform-class-properties', 'transform-decorators-legacy'],
}
}
]
},
output: {
path: __dirname + "/src/",
filename: "app.min.js"
},
plugins: debug ? [] : [
new webpack.optimize.DedupePlugin(),
new webpack.optimize.OccurenceOrderPlugin(),
new webpack.optimize.UglifyJsPlugin({ mangle: false, sourcemap: false }),
],
};
I had the same problem and it got solved by removing the 'debug' property from webpack.conf.js. In stead I call webpack with the -d flag when I'm developing (and not when building the production bundle), as that adds the debug property automatically.
I see that debug is a conditional in your config, but at least it solved the problem for me.

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