Webpack 2 Module not found: Error: Cannot resolve module - javascript

When I want to create my bundle.js with:
$ ./node_modules/.bin/webpack --config webpack.config.js
I get the following error
ERROR in ./dev/js/source/scripts/components/TextInput.js Module not
found: Error: Cannot resolve module
'source/scripts/components/IconButton' in
/Users/sebastien/Documents/Javascript/Tests/MyApp/dev/js/source/scripts/components
# ./dev/js/source/scripts/components/TextInput.js 4:18-65
ERROR in ./dev/js/source/scripts/components/TextInput.js Module not
found: Error: Cannot resolve module 'source/scripts/SDK/classNames' in
/Users/sebastien/Documents/Javascript/Tests/MyApp/dev/js/source/scripts/components
# ./dev/js/source/scripts/components/TextInput.js 15:17-57
The project tree is the following
/Users/sebastien/Documents/Javascript/Tests/MyApp
- webpack.config.js
- dev
- js
- index.js
- source
- scripts
- components
- TextInput.js
- IconButton.js
- SDK
- classNames.js
In TextInput.js there's the following statement
import IconButton from "source/scripts/components/IconButton";
and my webpack.config.js contains the following
var path = require('path');
var webpack = require('webpack');
module.exports = {
devServer: {
inline: true,
contentBase: './src',
port: 8080
},
devtool: 'cheap-module-eval-source-map',
entry: './dev/js/index.js',
module: {
loaders: [
{
test: /\.js$/,
loaders: ['babel'],
exclude: /node_modules/
},
{
test: /\.scss/,
loader: 'style-loader!css-loader!sass-loader'
}
]
},
output: {
path: 'src',
filename: 'js/bundle.min.js'
},
plugins: [
new webpack.optimize.OccurrenceOrderPlugin()
]
};
How can I configure webpack to add the path ./dev/js to search for modules? I have tried with:
- modules: [path.resolve(__dirname, "./dev/js"), "node_modules"]
without any success. Can you help?
Regards,

Try
import IconButton from "./source/scripts/components/IconButton";
and see if that helps.
or
import IconButton from "../source/scripts/components/IconButton";
but the first one should probably work. Give it a try.

Related

Webpack Can't resolve other modules while building in my boilerplate project

I've created boilder plate project with webpack, react, typescript etc. but whenever I build my project, webpack throw this errors on my entry point that Cannot resolve other modules (which is just simple Login component)
This is my webpack's error message
ERROR in ./src/index.tsx
Module not found: Error: Can't resolve './components/Login' in '/Users/myname/Desktop/Projects/front/src'
# ./src/index.tsx 6:14-43
This is my index.tsx file
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { BrowserRouter } from 'react-router-dom';
import Login from './components/Login';
ReactDOM.render(
<BrowserRouter>
<Login />
</BrowserRouter>,
document.getElementById('root')
);
And this is my Login components, which webpack cannot resolve
import * as React from 'react';
export default () => <div>Login</div>;
This is my webpack config and package.json's scripts
webpack.config.js
const HtmlWebpackPlugin = require('html-webpack-plugin');
const path = require('path');
const CleanWebpackPlugin = require('clean-webpack-plugin');
module.exports = {
entry: './src/index.tsx',
module: {
rules: [
{
test: /\.tsx?$/,
loader: 'awesome-typescript-loader',
options: {
useCache: true,
reportFiles: ['src/**/*.{ts,tsx}']
}
},
{
enforce: 'pre',
test: /\.js$/,
loader: 'source-map-loader'
}
]
},
plugins: [
new HtmlWebpackPlugin({
template: 'template/index.html'
})
],
mode: 'production',
output: {
path: path.resolve(__dirname, 'build/'),
filename: 'bundle.[hash].js'
},
plugins: [new CleanWebpackPlugin()]
};
package.json's scripts
"scripts": {
"build": "webpack"
},
I tried minimize my project as possible so you can focus on this single problem, why the hack my webpack cannot resolve ordinary component file? you can find this minimized project on https://github.com/sh2045/myproblem
you can just clone it, and run
npm i
npm run build
and you can see error message, please help :(
Instead of using awesome-typescript-loader why don't you try the loader's recommended by webpack for typescript
To fix your problem,
Install this node package npm install --save-dev typescript ts-loader. This is the loader that does ts to js conversion.
You need to remove awesome-typescript-loader and use ts-loader in webpack.config.js. Below is the updated webpack.config.js. You can use this configuration and execute npm run build and verify if your webpack bundles the project without errors
Modified webpack.config.js
const HtmlWebpackPlugin = require('html-webpack-plugin');
const path = require('path');
const CleanWebpackPlugin = require('clean-webpack-plugin');
module.exports = {
entry: './src/index.tsx',
module: {
rules: [
{
test: /\.tsx?$/,
use: 'ts-loader',
exclude: /node_modules/
},
{
enforce: 'pre',
test: /\.js$/,
loader: 'source-map-loader'
}
]
},
resolve: {
extensions: [ '.tsx', '.ts', '.js' ]
},
plugins: [
new HtmlWebpackPlugin({
template: 'template/index.html'
})
],
mode: 'production',
output: {
path: path.resolve(__dirname, 'build/'),
filename: 'bundle.[hash].js'
},
plugins: [new CleanWebpackPlugin()]
};
Note When i downloaded & setup your project from your git, this package npm i acorn --save was missing in your package.json i believe. so i had to install it manually

Webpack require unmanaged script

I have a problem with dynamic require js files after webpack bundling.
Environment:
webpack, ts-loader, typescript.
src/index.ts:
require(path.resolve(__dirname, './test.js'));
dist/test.js:
console.log('I should be printed after require # index');
I don't know why but webpack think that there is no file:
1) Warning while running webpack -p
WARNING in ./src/index.ts
5:0-43 Critical dependency: the request of a dependency is an expression
# ./src/index.ts
2) Error while running script:
Error: Cannot find module "C:\Users\user\path\to\dist\test.js".
3) My webpack config is:
const nodeExternals = require('webpack-node-externals');
module.exports = {
entry: {
index: "./src/index.ts"
},
output: {
filename: "[name].js"
},
target: "node",
externals: [ nodeExternals() ],
node: {
"__dirname": false
},
resolve: {
extensions: [".ts", ".tsx", ".js"]
},
module: {
rules: [
{ test: /\.tsx?$/, loader: "ts-loader" }
]
}
}
Expected:
NodeJS just dynamically require path while index.js script execution.
Please help to setup that properly.
Thanks!
Problem solved using __non_webpack_require__ function.

Getting Error: Module parse failed: ... unexpected character '#'

I am using webpack for the first time and want to use some css with my react/redux application. I followed a guide, but still seem to be having problems. I am getting the above error as you can see.
folder structure looks like this:
.git
-node_modules
-public
-bundle.js
-index.html
-src
-actions
-components
-reducers
app.js
-style
-style.css
.babelrc
.gitingore
package-lock.json
package.json
README.md
server.js
webpack.config.js
This is the exact error:
Uncaught Error: Module parse failed: C:\Users\Amazo\projects\reduxApp\style\style.css Unexpected character '#' (1:0)
You may need an appropriate loader to handle this file type.
| #row1 {
| margin-top: 15px;
| }
I will post my webpack config file below:
var path = require('path');
const webpack = require('webpack');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
var HTMLWebpackPlugin = require('html-webpack-plugin');
module.exports = {
entry: './src/app.js',
output: {
filename: 'bundle.js',
path: path.resolve(__dirname, 'public')
},
watch: true,
module: {
rules: [
{
test: /\.js$/,
exclude:/node_modules/,
loader: 'babel-loader',
query: {
presets: ['react', 'es2015', 'stage-1']
}
},
{
use: ['style-loader', 'css-loader'],
test: /\.css$/
}
]
},
resolve: {
extensions: ['.js','.jsx']
},
plugins: [
new HTMLWebpackPlugin({
template: 'public/index.html';
}),
new ExtractTextPlugin('style.css')
]
};
Add .css to your resolve
resolve: {
extensions: ['.js','.jsx', '.css']
},
Otherwise, webpack won't be able to process it correctly

Webpack unable to find jsx files

I am trying to bundle and server a small app I have on a webpack dev server. So far it has been good, however it seems to be unable to locate my jsx files. I have an index in each of my react smart component folders that looks like so :
import Component from './component';
import container from './container';
import reducers from './reducers';
export default {
Component,
container,
Container: container(),
reducers
};
Webpack is complaining when I try to run the bundle and saying
client:47 ./client/ux-demo/index.js
Module not found: Error: Cannot resolve 'file' or 'directory' ./component in /Users/me/projects/ux-demo/client/ux-demo
resolve file
The only real difference is it is a jsx file, rather than a js file, but I have babel-loader in place.
Here is my webpack.config file
var path = require('path');
var webpack = require('webpack');
module.exports = {
devtool: 'eval',
entry: [
'webpack-dev-server/client?http://localhost:3000',
'webpack/hot/only-dev-server',
'./client/app.jsx'
],
output: {
path: path.join(__dirname, 'client'),
filename: 'bundle.js',
publicPath: '/client/'
},
plugins: [
new webpack.HotModuleReplacementPlugin()
],
module: {
loaders: [{
test: /\.js$/,
loaders: ['react-hot', 'babel-loader'],
include: path.join(__dirname, 'client')
}, {
test: /\.jsx$/,
loaders: ['react-hot', 'babel-loader'],
include: path.join(__dirname, 'client')
}]
}
};
Unsure what I am doing wrong here, thanks!
You need to tell webpack that resolve .jsx files also
resolve:{
extensions:['.jsx']
}

Webpack error when importing CSS vendor library into index.js

I am moving existing javascript vendor libraries into a webpack setup, where possible using npm to install an npm module and deleting the old script tag on the individual page as bundle.js and bundle.css include it
In index.js, I have the following
import 'materialize-css/dist/css/materialize.min.css';
However, when webpack is run, it errors with the following
Module parse failed: .......Unexpected character ''
You may need an appropriate loader to handle this file type.
So, for some reason, webpack is looking at the entire materialize folder, rather than just the single minified css file, and is then error when it comes across materialize/fonts directory.
I am unclear why this is happening, and what to do to stop it. Any advice would be greatly appreciated.
My webpack config is below
const webpack = require('webpack');
const path = require('path');
var precss = require('precss');
var autoprefixer = require('autoprefixer');
var ExtractTextPlugin = require("extract-text-webpack-plugin");
var postcssImport = require('postcss-import');
module.exports = {
context: __dirname + '/frontend',
devtool: 'source-map',
entry: "./index.js",
output: {
filename: 'bundle.js',
path: path.join(__dirname, './static')
},
module: {
loaders: [
{
test: /\.js$/,
loader: 'babel',
exclude: /node_modules/,
query: {
presets: ['es2015']
}
},
{
test: /\.css$/,
loader: ExtractTextPlugin.extract('style-loader', '!css-loader?sourceMap&importLoaders=1!postcss-loader')
}
]
},
plugins: [
new ExtractTextPlugin("si-styles.css")
],
postcss: function(webpack) {
return [
postcssImport({ addDependencyTo: webpack }), // Must be first item in list
precss,
autoprefixer({ browsers: ['last 2 versions'] })
];
},
}

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