Develop Reference

Vue-i18n loader webpack config with Laravel Mix

We have a project setup with Laravel and Mix, Vue (2.7) and Vue-i18n which was working up to now. We recently had to ugprade to Mix 6 and Webpack 5 in order to install TailwindCSS and the Vue-i18n loader is no longer working.
Here's my config:
webpack.mix.js:
const mix = require('laravel-mix');
mix.extend( 'i18n', new class {
webpackRules() {
return [{
resourceQuery: /blockType=i18n/,
type: 'javascript/auto',
loader: '#intlify/vue-i18n-loader',
}];
}
}());
mix.js('resources/js/app.js', 'public/js')
.sass('resources/sass/app.scss', 'public/css/app.css')
.options({
postCss: [
require("tailwindcss"),
]
})
.i18n();
package.json:
{
"private": true,
"scripts": {
"development": "mix",
"watch": "mix watch",
"watch-poll": "mix watch -- --watch-options-poll=1000",
"hot": "mix watch --hot",
"production": "mix --production"
},
"dependencies": {
"autoprefixer": "^10.4.13",
"axios": "^0.19.0",
"bootstrap": "^4.4.1",
"bootstrap-vue": "^2.5.0",
"browserslist": "^4.8.7",
"caniuse-lite": "^1.0.30001030",
"cross-env": "^5.2.1",
"jquery": "^3.4.1",
"laravel-echo": "^1.6.1",
"laravel-mix": "^6.0.49",
"lodash": "^4.17.15",
"nprogress": "^0.2.0",
"popper.js": "^1.16.1",
"postcss": "^8.4.19",
"pusher-js": "^4.4.0",
"resolve-url-loader": "^5.0.0",
"sass": "^1.32.13",
"sass-loader": "^11.1.0",
"tailwindcss": "^3.2.4",
"vue": "^2.7.14",
"vue-bootstrap-typeahead": "^0.2.6",
"vue-i18n": "^8.15.3",
"vue-progressbar": "^0.7.5",
"vue-router": "^3.1.5",
"vue-template-compiler": "^2.6.11",
"vuejs-datepicker": "^1.6.2",
"vuex": "^3.1.2"
},
"devDependencies": {
"webpack-cli": "^5.0.1"
},
"main": "tailwind.config.js"
}
The error I'm getting now is:
Module parse failed: Unexpected token (1:0) You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
in every file where I'm referencing vue-i18n

Published npm package does not apply styles

I'm currently working on creating an npm package. Which is basically a React component with added styles using SCSS. When I test it out, the class names are there, but no styles are being applied.
Here is the repo for the package. I use a separated webpack config for building the specific folder where the component is.
Here's the webpack configuration I'm using:
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const EsLintFormatter = require('eslint-formatter-pretty');
const path = require('path');
const pkg = require('../../package.json');
const { SRC_PATH, BUILD_PATH } = require('./constants');
const setStyleLoaders = require('./style-loaders');
const alias = require('./alias');
const packageName = pkg.name;
module.exports = ({ NODE_ENV }) => ({
mode: 'production',
entry: `${SRC_PATH}/components/Carousel/Carousel.js`,
output: {
path: BUILD_PATH,
filename: 'index.js',
library: packageName,
libraryTarget: 'commonjs2',
umdNamedDefine: true,
publicPath: '/build/',
},
node: {
net: 'empty',
tls: 'empty',
dns: 'empty',
},
resolve: {
alias: {
...alias,
react: path.resolve(__dirname, './node_modules/react'),
'react-dom': path.resolve(__dirname, './node_modules/react-dom'),
},
},
externals: {
react: 'react',
reactDom: 'react-dom',
},
module: {
rules: [
{
test: /\.js$/,
exclude: /(node_modules)/,
use: [
{ loader: 'babel-loader' },
{
loader: 'eslint-loader',
options: {
formatter: EsLintFormatter,
},
},
],
},
{
test: /\.(sa|sc|c)ss$/,
use: setStyleLoaders(NODE_ENV),
},
{
test: /\.(png|pje?g|gif|svg)$/,
use: [
{
loader: 'file-loader',
options: {
outputPath: 'images',
},
},
],
},
{
test: /\.(woff|woff2|tff|otf|eot)$/,
use: [
{
loader: 'file-loader',
options: {
outputPath: 'fonts',
},
},
],
},
],
},
plugins: [
new CleanWebpackPlugin(),
new MiniCssExtractPlugin({ filename: 'index.css' }),
],
});
...and here's my package.json
{
"name": "react-clear-carousel",
"version": "0.1.0-beta.1",
"description": "A test",
"main": "build/index.js",
"scripts": {
"start": "cross-env NODE_ENV=development webpack-dev-server --env.NODE_ENV=development --config config/webpack/webpack.config.js",
"build": "cross-env NODE_ENV=production webpack --env.NODE_ENV=production --config config/webpack/webpack.config.publish.js",
"stylelint": "stylelint 'src/**/*.scss' --config stylelint.config.js; exit 0",
"eslint": "eslint 'src/**/*.js'; exit 0",
"es:fix": "eslint 'src/**/*.js' --fix",
"style:fix": "stylelint 'src/**/*.scss' --fix",
"lint": "npm run eslint && npm run stylelint",
"publish:beta": "npm publish --tag=beta",
"test": "jest"
},
"repository": {
"type": "git",
"url": "git+https://github.com/RobCC/web-playground.git"
},
"author": "robcc",
"license": "ISC",
"bugs": {
"url": "https://github.com/RobCC/web-playground/issues"
},
"files": [
"dist"
],
"jest": {
"setupFilesAfterEnv": [
"<rootDir>/config/jest/setup.js"
],
"moduleNameMapper": {
"\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/config/jest/fileMock.js",
"\\.(css|less|scss)$": "identity-obj-proxy",
"^~/(.*)": "<rootDir>/$1",
"^#/(.*)": "<rootDir>/src/$1"
}
},
"homepage": "https://github.com/RobCC/web-playground#readme",
"peerDependencies": {
"react": "^16.13.1",
"react-dom": "^16.13.1",
"prop-types": "^15.7.2"
},
"devDependencies": {
"#babel/cli": "^7.8.4",
"#babel/core": "^7.9.0",
"#babel/plugin-proposal-class-properties": "^7.8.3",
"#babel/plugin-proposal-export-default-from": "^7.8.3",
"#babel/plugin-proposal-export-namespace-from": "^7.8.3",
"#babel/preset-env": "^7.9.0",
"#babel/preset-react": "^7.9.1",
"#types/jest": "^25.1.4",
"#types/node": "^13.9.2",
"#types/react": "^16.9.25",
"#types/react-dom": "^16.9.5",
"#welldone-software/why-did-you-render": "^4.0.5",
"autoprefixer": "^9.7.4",
"babel-eslint": "^10.1.0",
"babel-loader": "^8.1.0",
"chalk": "^3.0.0",
"clean-webpack-plugin": "^3.0.0",
"core-js": "^3.6.4",
"cross-env": "^7.0.2",
"css-loader": "^3.4.2",
"cssnano": "^4.1.10",
"enzyme": "^3.11.0",
"enzyme-adapter-react-16": "^1.15.2",
"eslint": "^6.8.0",
"eslint-config-airbnb": "^18.1.0",
"eslint-formatter-pretty": "^3.0.1",
"eslint-import-resolver-alias": "^1.1.2",
"eslint-loader": "^3.0.3",
"eslint-plugin-import": "^2.20.1",
"eslint-plugin-jsx-a11y": "^6.2.3",
"eslint-plugin-react": "^7.19.0",
"eslint-plugin-react-hooks": "^2.5.1",
"file-loader": "^6.0.0",
"html-webpack-plugin": "^3.2.0",
"identity-obj-proxy": "^3.0.0",
"jest": "^25.1.0",
"log-symbols": "^3.0.0",
"mini-css-extract-plugin": "^0.9.0",
"postcss-loader": "^3.0.0",
"pr*op-types": "^15.7.2",
"react": "^16.13.1",
"react-dom": "^16.13.1",
"regenerator-runtime": "^0.13.5",
"sass": "^1.26.3",
"sass-loader": "^8.0.2",
"style-loader": "^1.1.3",
"stylelint": "^13.2.1",
"stylelint-config-recommended": "^3.0.0",
"stylelint-formatter-pretty": "^2.0.0",
"stylelint-scss": "^3.16.0",
"stylelint-webpack-plugin": "^1.2.3",
"ts-loader": "^6.2.1",
"typescript": "^3.8.3",
"webpack": "^4.42.0",
"webpack-cli": "^3.3.11",
"webpack-dev-server": "^3.10.3"
},
"dependencies": {
"weak-key": "^1.0.2"
}
}
This is the result when testing the published package:
Edit 1:
There are no errors on the Network and Console tab in devtools. I also can't find the file loaded, even though it's there in the package. It seems like the js file is not using it, but it should.
Edit 2:
Thanks for pointing me on the right direction!
I added import 'react-clear-carousel/build/index.css'; to include the CSS file from my package. I can see the file now (on devtools), but the styles are not being applied since css-loader is modularizing it and adding additional suffix and prefix (even though it already had them), thus having different class names that the ones my component has.
eg. My component is rendered as <div class="carousel_swimlane--kXSjh">, but the styles in the DOM are named as index_carousel_swimlane--kXSjh--2C.
I guess the question is now, how do I tell Webpack to pass this CSS as is? And if there's a way for me to deliver the CSS file without other people having to change their Webpack configuration.

Looking at your repo I see that you are importing your scss but attributing it's properties to classNames.
className should be the name of the class, and you can either attribute your imported styles to style or you can load your compiled css into the DOM using <link rel="stylesheet" type="text/css" href="styles.min.css">
The reason you're not seeing a stylesheet in the network tab is because you've simply forgotten to declare a stylesheet.

How to prevent webpack to fail build on eslint error?

i used the default vue-cli command to create a vue project.
When webpack is building, it fails, as shown in the image:
I am not using any special webpack configuration. What am i doing wrong?
My package.json:
{
"name": "myapp",
"version": "0.1.0",
"private": true,
"scripts": {
"serve": "vue-cli-service serve",
"build": "vue-cli-service build",
"lint": "vue-cli-service lint"
},
"dependencies": {
"core-js": "^3.4.4",
"firebase": "^7.6.2",
"register-service-worker": "^1.6.2",
"vue": "^2.6.10",
"vue-router": "^3.1.3",
"vuex": "^3.1.2"
},
"devDependencies": {
"#vue/cli-plugin-babel": "^4.1.0",
"#vue/cli-plugin-eslint": "^4.1.0",
"#vue/cli-plugin-pwa": "^4.1.0",
"#vue/cli-plugin-router": "^4.1.0",
"#vue/cli-plugin-vuex": "^4.1.0",
"#vue/cli-service": "^4.1.0",
"babel-eslint": "^10.0.3",
"eslint": "^5.16.0",
"eslint-plugin-vue": "^5.0.0",
"node-sass": "^4.12.0",
"sass-loader": "^8.0.0",
"vue-template-compiler": "^2.6.10"
},
"browserslist": [
"> 1%",
"last 2 versions"
]
}

You can force ESLint to always emit just warnings instead of errors by webpack configuration. That will not stop your build as you expect. You need to set emitWarning option to true in your webpack.config.js file.
eg.
module.exports = {
module: {
rules: [
{
test: /\.vue$/,
exclude: /node_modules/,
loader: "eslint-loader",
options: {
emitWarning: true
}
}
]
}
};
You can read more in the documentation https://github.com/webpack-contrib/eslint-loader#errors-and-warning

i guess with the new eslint/webpack stuff, this is default behaviour.
So this is my workaround in my .lintrc.js file:
'no-console': process.env.NODE_ENV === 'production' ? 2 : 1

NoEmitOnErrorsPlugin is now automatically enabled in webpack 4, when mode is either unset, or set to production. So even ESLint warnings will fail the build. No matter what error settings are used for eslint-loader, except if emitWarning enabled.
https://webpack.js.org/loaders/eslint-loader/#noemitonerrorsplugin

Slow initial webpack build

I'm using React + Redux + Webpack but having an annoying development experience when every time I rerun the node server (using JetBrains WebStorm) it takes 2.5 minutes for webpack to bunde everything together.
I tried every possible technique to make webpack initial build faster but with no success. It takes 2.5 minutes to run this.
I tried:
Babel caching
Webpack module analyzer
excluding node_modules
Here is my webpack.config.js file:
let path = require('path')
let webpack = require('webpack')
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
let entry = {
bundle: './src/index',
vendor: [
'react',
'react-dom',
'redux',
'react-redux',
'react-router',
'react-router-dom',
'react-router-redux',
'redux-thunk',
'd3',
'immutable',
'moment',
'axios',
'openlayers',
'react-table',
'react-select',
'reselect'
]
}
let plugins = [
new webpack.optimize.CommonsChunkPlugin({ name: 'vendor', filename: 'vendor.bundle.js' }),
new webpack.DefinePlugin({
'process.env': {
NODE_ENV: JSON.stringify(ENV === 'prod' ? 'production' : 'development'),
API_URL: JSON.stringify(API_URL),
BASIC: JSON.stringify(BASIC)
}
}),
new webpack.optimize.UglifyJsPlugin({
beautify: false,
comments: false,
compress: {
sequences : true,
booleans : true,
loops : true,
unused : true,
warnings : false,
drop_console: true,
unsafe : true
}
})
]
const config = {
entry: entry,
cache: true,
devtool: 'cheap-module-source-map',
output: {
path: path.join(__dirname, 'dist'),
filename: 'bundle.js',
publicPath: '/dist/'
},
plugins: plugins,
module: {
rules: [
{
enforce: "pre",
test: /\.js$/,
exclude: /node_modules/,
loader: "eslint-loader",
},
{
test: /\.js$/,
loader: 'babel-loader?cacheDirectory',
query: {
plugins: ['transform-runtime']
},
include: [path.resolve(__dirname, "src")],
exclude: /node_modules/
},
{
test: /\.(css|less)$/,
use: ['style-loader', 'css-loader', 'less-loader', 'postcss-loader']
},
{
test: /\.(jpe?g|png|gif|svg)$/i,
loaders: [
'file-loader?hash=sha512&digest=hex&name=[hash].[ext]',
`image-webpack-loader?${JSON.stringify(query)}`
]
},
{
test: /\.(eot|woff|woff2|ttf)$/,
loader: 'url-loader?limit=30000&name=[name]-[hash].[ext]'
}
]
}
}
module.exports = config
and here is my package.json file:
{
"name": "Aloha",
"version": "1.0.0",
"description": "",
"main": "server.js",
"scripts": {
"start": "node server.js",
"start-debug": "node $NODE_DEBUG_OPTION server.js",
"build": "webpack",
"test": "jest --verbose",
"test:watch": "npm test -- --watch",
"test-coverage": "jest --coverage",
"webpack-stats": "webpack --profile",
"startwatch": "nodemon server.js"
},
"author": "Aloha",
"license": "ISC",
"devDependencies": {
"#amcharts/amcharts3-react": "^3.0.0",
"babel-core": "^6.11.4",
"babel-eslint": "^8.0.3",
"babel-loader": "^7.1.2",
"babel-plugin-transform-runtime": "^6.9.0",
"babel-preset-react": "^6.11.1",
"babel-preset-stage-0": "^6.5.0",
"css-loader": "^0.28.4",
"eslint": "^4.12.1",
"eslint-loader": "^1.4.1",
"eslint-plugin-react": "^7.0.1",
"file-loader": "^1.1.5",
"image-webpack-loader": "^3.3.1",
"less": "^2.7.1",
"less-loader": "^4.0.5",
"postcss-loader": "^2.0.9",
"redux-mock-store": "^1.2.1",
"style-loader": "^0.19.0",
"url-loader": "^0.6.2",
"webpack-bundle-analyzer": "^2.9.1",
"webpack-dev-middleware": "^1.10.2",
"webpack-hot-middleware": "^2.12.1"
},
"dependencies": {
"axios": "^0.17.1",
"babel-preset-es2017": "^6.24.1",
"body-parser": "^1.17.2",
"classnames": "^2.2.5",
"compression": "^1.6.2",
"connect-multiparty": "^2.0.0",
"cookie-parser": "^1.4.3",
"d3": "^4.3.0",
"dotenv": "^4.0.0",
"express": "^4.15.3",
"history": "^4.7.2",
"http-proxy-middleware": "^0.17.4",
"immutable": "^3.8.1",
"lodash": "^4.17.4",
"moment": "^2.14.1",
"moment-timezone": "^0.5.13",
"nodemon": "^1.12.1",
"openlayers": "^4.5.0",
"prop-types": "^15.5.10",
"querystring": "^0.2.0",
"rc-collapse": "^1.7.5",
"react": "^16.2.0",
"react-block-ui": "^1.1.1",
"react-datetime": "^2.8.6",
"react-dom": "^16.2.0",
"react-imageloader": "^2.1.0",
"react-notification-system": "^0.2.15",
"react-redux": "^5.0.5",
"react-router-dom": "^4.2.2",
"react-router-redux": "^5.0.0-alpha.8",
"react-select": "^1.0.0-rc.5",
"react-table": "^6.7.4",
"react-tabs": "^2.1.1",
"redux": "^3.7.2",
"redux-thunk": "^2.1.0",
"request": "^2.74.0",
"reselect": "^3.0.1",
"webpack": "^3.9.1"
}
}
Help will be deeply appreciated !

This is honestly not that surprising. It depends a lot on the complexity of your code and your machine. It takes about 1 min 15 seconds for my project on a high end iMac.
Personally if you’re new to development create-react-app is still a great starting point as it has hot reloading. Use webpack watch or something similar so you can see updates as you develop.
There should be no reason to rerun the node server after changes. The only time to rerun node will be when you deploy.

You can wire in webpack dev server, and I'm quite sure a solution can be found by using concurrently
In package.json, wire in "dev":"concurrently \"npm run server\" \"npm run client\""
where "server":"nodemon index.js" and "client":"webpack-dev-server ...".
I haven't tested this exact setup, but do use it with create react app where client is simply
npm run start --prefix client

It depends a lot on your machine. Make sure you have enough disk space and good processor for your project.
Apart from this, for more improvements you can go through this link.

React.js Error: Invariant Violation: Minified React error #37

I've tried looking up in the internet, but I can't find the solution for this error.
Essentially, when I run my app in my localhost via npm start, it runs without a problem.
However, when I switch to git branch gh-pages to host in the gh-pages, I see the following error in my console.log
Uncaught Invariant Violation: Minified React error #37
_registerComponent(...): Target container is not a DOM element is what error #37 means.
Link to Git App Repository gh-pages branch
Here's my current setup:
webpack.config.js
var path = require('path');
var webpack = require('webpack');
var ghpages = require('gh-pages');
var WriteFilePlugin = require('write-file-webpack-plugin');
module.exports = {
devtool: 'source-map',
entry: [
'./src/index.js'
],
output: {
publicPath: '/',
filename: 'bundle.js',
sourceMapFilename: "./bundle.js.map",
path: path.join(__dirname, './static')
},
module: {
loaders: [{
exclude: /node_modules/,
loader: 'babel',
query: {
presets: ['react', 'es2015', 'stage-1']
}
},{
test: /\.s?css$/,
loaders: ['style','css','sass'],
include: path.join(__dirname, 'src')
}]
},
resolve: {
extensions: ['', '.js', '.jsx'],
alias: {
'jquery': path.join(__dirname, 'node_modules/jquery/dist/jquery'),
}
},
devServer: {
historyApiFallback: true,
contentBase: './',
outputPath: path.join(__dirname, './dist')
}
};
package.json
{
"name": "recipe-box",
"version": "1.0.0",
"description": "Portfolio",
"main": "index.js",
"repository": "",
"scripts": {
"start": "node ./node_modules/webpack-dev-server/bin/webpack-dev-server.js",
"test": "mocha --compilers js:babel-core/register --require ./test/test_helper.js --recursive ./test",
"test:watch": "npm run test -- --watch",
"postinstall": "webpack -p"
},
"author": "",
"license": "ISC",
"devDependencies": {
"babel-core": "^6.2.1",
"babel-loader": "^6.2.0",
"babel-preset-es2015": "^6.1.18",
"babel-preset-react": "^6.1.18",
"chai": "^3.5.0",
"chai-jquery": "^2.0.0",
"file-loader": "^0.9.0",
"gh-pages": "^0.11.0",
"image-webpack-loader": "^2.0.0",
"jquery": "^3.1.0",
"jsdom": "^9.5.0",
"mocha": "^3.0.2",
"node-sass": "^3.8.0",
"react-addons-test-utils": "^15.3.1",
"webpack": "^1.13.2",
"webpack-dev-server": "^1.14.0",
"write-file-webpack-plugin": "^3.3.0"
},
"dependencies": {
"babel-preset-stage-1": "^6.1.18",
"css-loader": "^0.25.0",
"express": "^4.14.0",
"jquery": "^2.2.4",
"lodash": "^4.16.1",
"materialize-css": "^0.97.7",
"node-sass": "^3.8.0",
"react": "^15.3.1",
"react-bootstrap": "^0.30.3",
"react-dom": "^15.3.1 ",
"react-materialize": "^0.16.4",
"react-redux": "^4.0.0",
"react-router": "^2.0.1",
"react-tap-event-plugin": "^1.0.0",
"redux": "^3.0.4",
"redux-logger": "^2.6.1",
"sass-loader": "^4.0.0",
"shortid": "^2.2.6",
"style-loader": "^0.13.1"
}
}

Answered my own question
It looked like I had to move bundle.js out from dist folder to the same directory where my index.html was.