hello i just made environment setup for react js and it gives me error
ReferenceError: Unknown option: .present. and here is codes of .babelrc webpack.config.js, package.json and react.js (file)
.babelrc
{
"presets": [
"#babel/preset-env",
"#babel/preset-react"
]
}
webpack.config.js :
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
entry: './react.js',
output:{
path: path.join(__dirname, '/frapp'),
filename: 'bundled.js'
},
devServer:{
inline: true,
port: 8001
},
module: {
rules: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel-loader',
query:{
present:['es2015', 'react']
}
}
]
},
plugins: [
new HtmlWebpackPlugin({
template: './index.html'
})
]
}
package.json :
{
"name": "reacc",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "webpack-dev-server --mode development --open --hot",
"build": "webpack --mode production"
},
"author": "",
"license": "ISC",
"dependencies": {
"#babel/core": "^7.2.2",
"#babel/preset-env": "^7.3.1",
"#babel/preset-react": "^7.0.0",
"babel-loader": "^8.0.5",
"html-webpack-plugin": "^3.2.0",
"react": "^16.8.1",
"react-dom": "^16.8.1",
"webpack": "^4.29.3",
"webpack-cli": "^3.2.3",
"webpack-dev-server": "^3.1.14"
}
}
for more details i would like to screenshot my directory here it is
here is part of error : Module build failed (from ./node_modules/babel-loader/lib/index.js):
ReferenceError: Unknown option: .present. Check out https://babeljs.io/docs/en/b
abel-core/#options for more information about options.
as a matter of fact, react is opens html page but does not display text in div
It's presets, not present:['es2015', 'react']. There's a typo in your webpack.config.js.
Also what's that query key?
query: {
present:['es2015', 'react']
}
From what I know it should be options. So:
options: {
presets: ['es2015', 'react']
}
Related
I have an issue with babel and Webpack. I shared configurations. I am getting below error while i am running webpack build command. However i already added #babel/preset-react in .babelrc (also tried babel.config.json) files. I need some suggestion for solve this error.
{
"name": "#mahiraltinkaya/react-image-upload",
"version": "1.2.1",
"description": "",
"main": "dist/index.js",
"scripts": {
"build": "webpack --mode production"
},
"repository": {
"type": "git",
"url": "git+ssh://git#github.com/mahiraltinkaya/react-file-upload.git"
},
"keywords": [
"react",
"next",
"react-image",
"image-drag-n-drop"
],
"author": "Mahir Altinkaya",
"license": "ISC",
"bugs": {
"url": "https://github.com/mahiraltinkaya/react-file-upload/issues"
},
"homepage": "https://github.com/mahiraltinkaya/react-file-upload#readme",
"devDependencies": {
"#babel/cli": "^7.20.7",
"#babel/core": "^7.20.12",
"#babel/preset-env": "^7.20.2",
"#babel/preset-react": "^7.18.6",
"babel-loader": "^9.1.2",
"css-loader": "^6.7.3",
"style-loader": "^3.3.1",
"webpack": "^5.75.0",
"webpack-cli": "^5.0.1"
},
"dependencies": {
"prop-types": "^15.8.1",
"react": "^16.14.0"
}
}
babel.config.json
{
"presets": ["#babel/preset-env", "#babel/preset-react"]
}
webpack.config.json
var path = require("path");
module.exports = {
mode: "production",
entry: "./src/index.js",
output: {
path: path.resolve("dist"),
filename: "index.js",
libraryTarget: "commonjs2",
},
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
loader: "babel-loader",
},
{
test: /\.css$/,
loader: "css-loader",
},
],
},
externals: {
react: "react",
},
};
For some reason, your file babel.config.json is not parsed. webpack is not reading it. convert it to
.babelrc
or convert it to babel.config.js and have this
module.exports={"presets": ["#babel/preset-env", "#babel/preset-react"]}
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)$/,
use:
[
{
loader: 'file-loader',
options:
{
name: '[name].[ext]'
}
}
]
},
{
test: /\.m?js/,
resolve:
{
fullySpecified: false
}
},
]
}
}
I am trying to create a react app using webpack and babel,but when i actually start webpack dev server,using yarn run start,it shows the following error:-
i am using babel-loader version 8.1.0 and #babel/core version 7.10.2
My package.json:-
{
"name": "reactTemplate",
"version": "1.0.0",
"main": "index.js",
"license": "MIT",
"scripts": {
"start": "webpack-dev-server --mode development --open --hot",
"build": "webpack --mode production"
},
"dependencies": {
"react": "^16.13.1",
"react-dom": "^16.13.1"
},
"devDependencies": {
"babel-loader": "^8.1.0",
"#babel/core": "^7.10.2",
"#babel/preset-env": "^7.10.2",
"#babel/preset-react": "^7.10.1",
"html-webpack-plugin": "^4.3.0",
"webpack": "^4.43.0",
"webpack-cli": "^3.3.11",
"webpack-dev-server": "^3.11.0"
}
}
My .babelrc:-
{
"presets": ["#babel/preset-env", "#babel/preset-react"]
}
My webpack.config.js:-
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
entry: './src/index',
output: {
path: path.join(__dirname, './dist'),
filename: 'index_bundle.js',
},
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader',
},
},
],
},
plugins: [
new HtmlWebpackPlugin({
template: './src/index.html',
}),
],
};
If you are running a very simple hello world example and extension is js then your settings seem fine. If you are using jsx files as well the add this to the webpack
test: /\.(js|jsx)$/,
Trying to set up a react web app but keep running into this error after trying to implement semantic-UI by putting import "semantic-ui-css/semantic.min.css"; in index.jsx.
I npm installed css-loader and style-loader as thats the error I was getting prior to this new error.
My guess is a webpack.config needs to be adjusted to handle the loaders differently but I'm unsure on how to proceed with this.
ERROR in ./node_modules/semantic-ui-css/themes/default/assets/fonts/outline-icons.woff
Module parse failed: C:\Users\Shawn\Documents\GitHub\Galavue\Galavue\node_modules\semantic-ui-css\themes\default\assets\fonts\outline-icons.woff Unexpected character ' ' (1:4)
You may need an appropriate loader to handle this file type.
(Source code omitted for this binary file)
# ./node_modules/css-loader/dist/cjs.js!./node_modules/semantic-ui-css/semantic.min.css 15:42-101
# ./node_modules/semantic-ui-css/semantic.min.css
# ./react-client/src/index.jsx
Package.json
{
"name": "galavue",
"version": "0.0.0",
"description": "Galavue",
"main": "server.js",
"author": "Shawn",
"scripts": {
"dev": "webpack -d --watch",
"start": "node ./server/index.js",
"build": "webpack -p",
"react-dev": "webpack -d --watch",
"server-dev": "nodemon server/index.js"
},
"repository": {
"type": "git",
"url": "git+https://github.com/www.github.com/shawnSFU.git"
},
"license": "ISC",
"bugs": {
"url": "https://github.com/www.github.com/shawnSFU/issues"
},
"homepage": "https://github.com/www.github.com/shawnSFU#readme",
"dependencies": {
"babel-core": "^6.25.0",
"babel-loader": "^7.1.1",
"babel-preset-es2015": "^6.24.1",
"babel-preset-react": "^6.24.1",
"body-parser": "^1.17.2",
"express": "^4.15.3",
"react": "^15.6.1",
"react-dom": "^15.6.1",
"react-router": "^4.1.2",
"react-router-dom": "^4.1.2",
"semantic-ui-css": "^2.4.1",
"semantic-ui-react": "^0.85.0",
"webpack": "^3.4.1"
},
"devDependencies": {
"css-loader": "^2.1.0",
"style-loader": "^0.23.1"
}
}
webpack.config.js
//defines the entry and output points for our application
const path = require('path');
const SRC_DIR = path.join(__dirname, '/react-client/src');
const DIST_DIR = path.join(__dirname, '/react-client/dist');
const webpack = require('webpack');
module.exports = {
entry: `${SRC_DIR}/index.jsx`,
output: {
path: DIST_DIR,
filename: 'bundle.js',
},
resolve: {
extensions: ['.js', '.jsx', '.json', '.css'],
},
module: {
rules: [
{
test: /\.css$/,
loader: 'style-loader!css-loader'
},
{
test: /\.png$/,
loader: 'url-loader?limit=100000&minetype=image/png'
},
{
test: /\.jpg/,
loader: 'file-loader'
},
{
test: /\.jsx?/,
include: SRC_DIR,
loader: 'babel-loader',
query: {
presets: ['react', 'es2015']
}
}
]
},
plugins: [
new webpack.DefinePlugin({
'process.env.NODE_ENV': JSON.stringify('production')
})
]
};
There are a few things you need to do. Ensure that you have use ~ for CSS imports from node_modules like:
import '~semantic-ui-css/semantic.min.css';
Second, this CSS file semantic.min.css also references *.woff files. I believe it is used for referencing external font files. You would need either url-loader or file-loader to handle those types of files. Sample loader configuration for url-loader would look like:
{
test: /\.(png|jpg|gif|svg|eot|ttf|woff|woff2)$/,
loader: 'url-loader',
options: {
limit: 10000,
},
}
Further documentation:
url-loader
file-loader
{
"name": "reactApp",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "webpack --mode development",
"build": "webpack --mode production"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"react": "^16.7.0",
"react-dom": "^16.7.0",
"webpack": "^4.29.0",
"webpack-cli": "^3.2.1",
"webpack-dev-server": "^3.1.14"
},
"devDependencies": {
"babel-core": "^6.26.3",
"babel-loader": "^8.0.5",
"babel-preset-env": "^1.7.0",
"babel-preset-es2015": "^6.24.1",
"babel-preset-react": "^6.24.1",
"html-webpack-plugin": "^3.2.0"
}
}
Please help me to solve this issue , i am still getting this issue after doing many changes like , i degraded the babel to lowest version & i installed npm using this command and also i did many changes but there is no result.
And webpack.config.js file
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
entry: './main.js',
output: {
path: path.join(__dirname, '/bundle'),
filename: 'index_bundle.js'
},
devServer: {
inline: true,
port: 8080
},
module: {
rules: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel-loader',
query: {
presets: ['es2015', 'react']
}
}
]
},
plugins:[
new HtmlWebpackPlugin({
template: './index.html'
})
]
}
i think this could help as i dont know what is webpack file configration
but you can give it try in your webpack file
resolveLoader: {
root: path.join(__dirname, 'node_modules')
}
please share your webpack.config file