I have a bundled app with webpack with this script. This script alsa exports files as well.
I import this app from another app. The bundled app works pretty well inside the paretn app but I couldn't find how to display and use this exported images in the parent app. They aren't shown. My guess is webpack doesn't see the images as module.
module.exports = {
devtool: 'source-map',
entry: './src/App.js',
output: {
path: path.join(__dirname, 'build'),
filename: 'bundle.js',
libraryTarget: 'commonjs2'
},
plugins: commonConfig.plugins.concat([
new webpack.optimize.OccurrenceOrderPlugin()
]),
resolve: commonConfig.resolve,
module: {
rules: commonConfig.module.rules.concat({
test: /\.less$/,
use: [
'style-loader',
'css-loader?modules&importLoaders=1&localIdentName=[path]___[name]__[local]___[hash:base64:5]!postcss-loader',
'less-loader'
]
})
},
externals: {
'react': 'commonjs react'
}
};
The solution I found for now is include images (small svg and png files) to bundle with this kind of configs. it may be a better solution with code splitting.
{
test: /.*\.(svg)$/i,
include: path.resolve(mainPath, 'ui/svg/inline'),
use: "svg-inline-loader"
},
{
test: /.*\.(svg)$/i,
include: path.resolve(mainPath, 'ui/svg/default'),
use: {
loader: "url-loader",
options: {
limit: 100000
}
}
},
Related
I am trying to deploy the front-end of my web application, but when I deploy to my hosting platform (currently AWS Amplify/S3) - no content displays on the website
I created the application using create-react-app, so the project structure follows their standard (public, src folders etc.).
When I run the application locally it works fine.
From the console errors, and looking at the index.html page that is generated by webpack, it looks like it is not replacing the %PUBLIC_URL% field that should be replaced with the public directory on build.
Please can someone explain how to fix this issue?
I have included my webpack.config file below and the full repo can be found here
const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const config = {
entry: ['react-hot-loader/patch', './src/index.js'],
output: {
path: path.resolve(__dirname, 'build'),
filename: 'bundle.js',
},
module: {
rules: [
{
test: /\.(js|jsx)$/,
use: 'babel-loader',
exclude: /node_modules/,
},
{
test: /\.css$/,
use: ['style-loader', 'css-loader'],
},
{
test: /\.svg$/,
use: 'file-loader',
},
{
test: /\.png$/,
use: [
{
loader: 'url-loader',
options: {
mimetype: 'image/png',
},
},
],
},
{
test: /\.(ttf|eot|woff|woff2)$/,
use: 'file-loader',
},
],
},
resolve: {
extensions: ['.js', '.jsx'],
alias: {
'react-dom': '#hot-loader/react-dom',
},
},
devServer: {
contentBase: './build',
},
plugins: [
new HtmlWebpackPlugin({
template: path.resolve('./public/index.html'),
}),
],
}
module.exports = config
Turns out this was an issue with me trying to add a custom Webpack configuration to a create-react-app project.
I've removed the Webpack config now, and instead used the dist files created when using the create-react-app build process.
I am unable to display images within a React component. After many trials (attempted this, this, this, this, this, this, this and this) and only errors, I am requesting for help. I'm in the development build (not production build).
I still get this error:
Module parse failed: /project/src/images/net.png Unexpected character '�' (1:0)
You may need an appropriate loader to handle this file type.
(Source code omitted for this binary file)
Component
import thumbnail from '../images/net.png';
<img src={thumbnail}/>
Webpack config:
devtool: 'cheap-module-eval-source-map',
entry: [
'eventsource-polyfill',
'webpack-hot-middleware/client',
'./src/index'
],
target: 'web',
output: {
path: path.resolve(__dirname, 'dist'),
task `npm run build`.
publicPath: 'http://localhost:3000/',
filename: 'bundle.js'
},
devServer: {
contentBase: './src'
},
plugins: [new webpack.HotModuleReplacementPlugin(), new webpack.NoEmitOnErrorsPlugin()],
module: {
rules: [
{
test: /\.js$/,
include: path.join(__dirname, 'src'),
loader: 'babel-loader'
},
{
test: /(\.css)$/,
use: [
'style-loader',
{
loader: 'css-loader',
options: { sourcemap: true }
}
]
},
{
test: /\.(svg|png|jpg|jpeg|gif)$/,
include: './src/images',
use: {
loader: 'file-loader',
options: {
name: '[path][name].[ext]',
outputPath: paths.build
}
}
}
]
}
Directory Structure
Project
-- src
-----components
-----images
-----index.js
How can I display the image ?
Sample code here: githublink
See /src/components/home/HomePage.js
What can I do to see the image on the home page ?
Have you tried this webpack configuration
{
test: /\.(png|svg|jpg|gif)$/,
use: [
'file-loader'
]
}
I am using url-loader instead.
{
test: /\.(png|jpg)$/,
use: {
loader: 'url-loader',
options: {
limit: 25000 // Max file size = 25kb
}
}
}
I am not sure. But, I think you should install it first as devDependencies e.g. yarn add -D url-loader.
test: /\.(jpe|jpg|woff|woff2|eot|ttf|svg)(\?.*$|$)/,
Try using this with your file-loader loader.
notice the (?.*$|$) instead of a plain $.
{
test: /.(png|jp(e*)g|svg|gif)$/,
use:[{
loader: 'url-loader?limit=8192'
}]
}
I loaded png with url-loader instead inside webpack. You need to rebuild webpack as well.
I am using webpack with babel-loader to transform .jsx react files.
However, adding a file-loader or style- and css-loader does not correctly process the images required() in the react components or style sheets.
They get recognized by webpack and copied to the dist folder. The path to the image file is correct, I've verified this in the css and js output.
The server is also able to display the files, I've checked with some manually copied ones.
What is happening is that the images themselves get corrupted. No image viewer nor the browser can display the image which results in an invisible image in the browser.
What I've tried so far:
using only babel-loader as suggested in: https://github.com/webpack/file-loader/issues/35, results in Error: No handler for file type.
using file-loader directly
using image-webpack-loader (which seems to be using file-loader under the hood)
using IsomorphicLoaderPlugin (https://github.com/jchip/isomorphic-loader) which seems to be a simpler alternative to webpack-isomorphic-tools
using css background-images with url() and ExtractTextPlugin('style-loader", 'css-loader')
All of the above steps resulted in either errors with webpack not finding an appropriate handler or corrupted image files.
Here is my current webpack config for reference (I've included all of it in case there are any problems/conflicts I am overlooking):
var ExtractTextPlugin = require('extract-text-webpack-plugin'),
webpack = require('webpack');
IsomorphicLoaderPlugin = require("isomorphic-loader/lib/webpack-plugin");
module.exports = {
context: __dirname + '/client',
entry: ['babel-polyfill', './index.jsx'],
output: {
filename: 'app.js',
path: __dirname + '/dist',
publicPath: '/'
},
resolve: {
ignore: /node_modules/,
extensions: ['', '.js', '.jsx']
},
devtool: 'source-map',
plugins: [
new ExtractTextPlugin('styles.css'),
new IsomorphicLoaderPlugin({ keepExistingConfig: false }),
new webpack.DefinePlugin({
"process.env": {
BROWSER: JSON.stringify(true)
}
})
],
module: {
preLoaders: [
{
loaders: ['isomorphine']
}
],
loaders: [
{
test: /\.jsx?$/,
loader: 'babel',
exclude: /node_modules/,
query: {
cacheDirectory: true,
plugins: ['transform-runtime', 'transform-decorators-legacy', 'transform-class-properties', 'transform-object-rest-spread'],
presets: ['react', 'es2015', 'stage-0']
}
},
{
test: /\.css$/,
loader: ExtractTextPlugin.extract('style-loader', 'css-loader')
},
{
test: /\.(jpe?g|png|gif|svg)$/i,
loader: "file!isomorphic"
}
]
}
};
I am facing this strange issue with Webpack. After spending hours couldn't find solution.
In my jsx file when I a try to set image source via this
let img = require('../../../img/imgN.png');
It is working perfectly but when I try to set the background image using scss via
$bg-img: url('../img/bg-img.png');
Image is not getting loading by webpack.
This is my webpack file
module.exports = {
devtool: 'source-map',
entry: {
main: [
'webpack-dev-server/client?http://localhost:8080',
'webpack/hot/only-dev-server',
'./src/index.js'
]
},
output: {
path: path.join(__dirname, 'public'),
publicPath: '/public/',
filename: 'bundle.js'
},
plugins: [
new webpack.HotModuleReplacementPlugin(),
new webpack.NoErrorsPlugin()
],
module: {
loaders: [
{
test: /\.jsx?$/,
include: path.join(__dirname, 'src'),
loader: 'react-hot!babel'
},
{
test: /\.scss$/,
include: path.join(__dirname, 'sass'),
loaders: ["style", "css?sourceMap", "sass?sourceMap"]
},
{
test: /\.(png|jpg)$/,
include: path.join(__dirname, 'img'),
loader: 'url-loader?limit=30000'
} // inline base64 URLs for <=30k images, direct URLs for the rest
]
},
resolve: {
extensions: ['', '.js', '.jsx']
},
devServer: {
historyApiFallback: true,
contentBase: './'
}
}
Problem was occurring because of using sourceMap with style-loader.
There is some issue on github for the same problem.
Solution:
1 . While source-maps is enabled
Style-loader uses a Blob, so it requires absolute urls to work.
Changed publicPath: '/public/', to
publicPath: 'http://localhost:8080/public/',
It worked.
Without source-maps
Just remove source map from style loaders.
Now style-loader will use an inline style tag, so there is no problem.
{
test: /\.scss$/,
include: path.join(__dirname, 'sass'),
loaders: ["style", "css", "sass"]
},
Can you try to see if $bg-img: url('~/img/bg-img.png'); would work? When I was trying out webpack in my bootstrap.scss files I had to modify the font url's using ~ (I think I read it somewhere but ya just giving you something to try)
I'm trying to setup a React project with react-css-modules, webpack and Hot Module Replacement. Everything is working like a charm but I can't get the CSS sourcemaps to work.
I followed this guide to make HMR work. It involves a BrowserSync setup to update the css file after Webpack writes it to disk.
I use (as suggested by react-css-modules) the ExtractTextPlugin to extract all of the css:
{
test: /\.scss$/,
loader: ExtractTextPlugin.extract('style','css?modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!sass')
}
But if I change this to sourcemaps, as suggested here
loader: ExtractTextPlugin.extract('style', 'css?sourceMap!sass-loader outputStyle=expanded&sourceMap=true&sourceMapContents=true')
I get the error: "root" CSS module is undefined. in my browser console.
You can find my example repo here, but here's the full webpack config I'm using for development.
var webpack = require('webpack');
var path = require('path');
var ExtractTextPlugin = require('extract-text-webpack-plugin');
var WriteFilePlugin = require('write-file-webpack-plugin').default;
module.exports = {
entry: {
bundle: [
'webpack/hot/dev-server',
'webpack-hot-middleware/client',
'./index.js'
]
},
devtool: 'cheap-module-source-map',
debug: true,
devServer: devServer,
context: path.resolve(__dirname, './src'),
output: {
path: path.resolve(__dirname, './builds'),
filename: '[name].js',
publicPath: '/builds/'
},
plugins: [
new webpack.HotModuleReplacementPlugin(),
new webpack.OldWatchingPlugin(),
new WriteFilePlugin(),
new ExtractTextPlugin('[name].css', {
allChunks: true
})
],
module: {
loaders: [
{
test: /\.js$/,
loaders: ['react-hot', 'babel-loader'],
exclude: /node_modules/
},
{
test: /\.scss$/,
loader: ExtractTextPlugin.extract('style','css?modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!sass')
}
]
},
resolve: {
extensions: ['', '.js', '.json']
}
};
How to make the sourcemap work?
Use this:
ExtractTextPlugin.extract('style','css?sourceMap&modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!sass?sourceMap')
i.e. add the sourceMap param to both css & sass loaders. It said so in sass-loader docs.
This is how I have my css modules set up:
'css-loader?modules&sourceMap&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!',