When running tests using Jest, I need my .babelrc file for it to run.
When running npm start, it only works without the .babelrc file, with the error:
Unknown option: C:\...\babelrc.presets
I'm guessing it's to do with the version of babel I have, but I have tried to following "answer" to this question: Unknown option: .../.babelrc.presets
but to no avail.
Here is my package.json:
{
"name": "reactjs",
"version": "1.0.0",
"description": "",
"main": "src/app.js",
"author": "x",
"license": "ISC",
"scripts": {
"start": "webpack-dev-server --port 3000",
"test": "jest"
},
"jest": {
"scriptPreprocessor": "<rootDir>/node_modules/babel-jest",
"unmockedModulePathPatterns": [
"react",
"react-dom",
"react-addons-test-utils",
"fbjs"
]
},
"devDependencies": {
"babel-core": "^6.7.*",
"babel-jest": "^11.0.2",
"babel-loader": "^5.0.0",
"babel-preset-es2015": "^6.6.0",
"babel-preset-react": "^6.5.0",
"jest-cli": "^11.0.2",
"react-addons-test-utils": "^0.14.8",
"webpack": "^1.12.*",
"webpack-dev-server": "^1.10.*"
},
"dependencies": {
"react": "^0.13.3"
}
}
and my .babelrc:
{
"presets": [
"react",
"es2015"
]
}
and my webpack config, if it's relevant:
module.exports = {
entry: [
'./src/app.js'
],
output: {
path: __dirname,
filename: "bundle.js"
},
module: {
loaders: [{
test: /\.jsx?$/,
loader: 'babel',
exclude: /node_modules/
}]
}
};
You've listed babel-core#^6 but are using babel-loader#5, update your babel-loader to the most recent version.
I can work with babel src --out-dir lib, but not with npm run XXX using babel-core#6.20.0 and babel-loader#6.2.9 .While I install Babel-cli#6.18.0 CLI globally on my machine, after I install babel-cli# locally project, it can works with npm run.
Related
I have been learning webpack and babel...
All things are working fine but my webpack config is not working as it should, I think something I missed here.
Here are my webpack.config.js code
const path = require('path');
module.export = {
entry: './src/index.js',
output: {
path: path.resolve(__dirname, 'dist/assets'),
filename:'bundle.js'
},
devServer: {
contentBase: path.resolve(__dirname, 'dist'),
publicPath:'/assets/'
},
module:{
rules: [{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader',
options: {
presets:['#babel/preset-env']
}
}
}]
}
};
and here are all dev dependencies
{
"name": "chapter-22",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"build": "./node_modules/.bin/webpack src/index.js -o dist/assets/bundle.js --mode production",
"serve": "webpack-dev-server --mode development"
},
"author": "Jabid",
"license": "MIT",
"devDependencies": {
"#babel/cli": "^7.11.6",
"#babel/core": "^7.11.6",
"#babel/preset-env": "^7.11.5",
"babel-loader": "^8.1.0",
"webpack": "^4.44.2",
"webpack-cli": "^3.3.12"
},
"dependencies": {
"#babel/polyfill": "^7.11.5",
"webpack-dev-server": "^3.11.0"
}
}
problem solved , i mistakenly wrote module.export instead of module.exports.
When I'm trying to install babel to use it webpack and make the configuration, I face this error. I tried different versions from babel and webpack and I tried so many configurations, non of them worked and they keeping throw the same error.
Notice: I already have another plugins like webpack-server and webpack-html but I'm pretty sure they doesn't affect babel.
ERROR in ./node_modules/core-js/modules/es6.regexp.exec.js 1:3
Module parse failed: Unexpected character ' ' (1:3)
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
(Source code omitted for this binary file)
# ./node_modules/core-js/es6/index.js 102:0-37
# ./node_modules/#babel/polyfill/lib/noConflict.js
# ./node_modules/#babel/polyfill/lib/index.js
# multi #babel/polyfill ./src/js/index.js
.babelrc file:
// projectname/.babelrc
{
"presets": [
[ "#babel/preset-env", {
"modules": false,
"targets": {
"browsers": [
"last 2 Chrome versions",
"last 2 Firefox versions",
"last 2 Safari versions",
"last 2 iOS versions",
"last 1 Android version",
"last 1 ChromeAndroid version",
"ie 11"
]
}
} ]
]
}
webpack.config.js file:
// webpack.config.js
const path = require( 'path' );
const HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
context: __dirname,
entry: ['#babel/polyfill', './src/js/index.js'],
output: {
path: path.resolve( __dirname, 'dist' ),
filename: 'js/bundle.js',
},
devServer: {
contentBase: './dist'
},
plugins: [
new HtmlWebpackPlugin({
filename: 'index.html',
template: './src/index.html'
})
],
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
use: 'babel-loader'
}
]
}
};
package.json file:
{
"name": "forkify",
"version": "1.0.0",
"description": "forkify project",
"main": "index.js",
"scripts": {
"dev": "webpack --mode development",
"build": "webpack --mode production",
"start": "webpack-dev-server --mode development --open"
},
"author": "Ahmed Hossam",
"license": "ISC",
"devDependencies": {
"#babel/cli": "^7.6.4",
"#babel/core": "^7.6.4",
"#babel/preset-env": "^7.6.3",
"babel-loader": "^8.0.6",
"html-webpack-plugin": "^3.2.0",
"path": "^0.12.7",
"webpack": "^4.41.2",
"webpack-cli": "^3.3.9",
"webpack-dev-server": "^3.9.0"
},
"dependencies": {
"#babel/polyfill": "^7.6.0"
}
}
I keep getting this really annoying error in webpack and even when I run webpack --display-error-details, I get no errors. But anytime I run webpack-dev-server I get the following error. I really can't see where I am going wrong in my configuration.
Entry module not found: Error: Cannot resolve 'file' or 'directory'
./frontend/app.jsx
module.exports = {
context: __dirname,
entry: './frontend/app.jsx',
output: {
filename: 'bundle.js',
path: __dirname
},
module: {
loaders: [
{
test: [ /\.js$/, /\.jsx$/],
exclude: /(node_modules)/,
loader: 'babel-loader',
query: {
presets: ['es2015', 'react']
}
},
{
test: /\.scss$/,
use: ['style-loader', 'css-loader', 'sass-loader']
}
]
},
devtool: 'source-map',
resolve: {
extensions: ['.js', '.jsx', '.scss' ]
}
};
{
"name": "basicapp",
"version": "1.0.0",
"description": "",
"main": "app.jsx",
"author": "",
"license": "ISC",
"scripts": {
"start": "webpack-dev-server --env development",
"dev-server": "nodemon ./server.js localhost 8080",
"build": "webpack --env production"
},
"dependencies": {
"babel-cli": "^6.24.0",
"babel-core": "^6.24.0",
"babel-loader": "^6.4.1",
"babel-preset-es2015": "^6.24.0",
"babel-preset-react": "^6.23.0",
"css-loader": "^0.27.3",
"express": "^4.15.2",
"express-graphql": "^0.6.3",
"lodash": "^4.17.4",
"node-sass": "^4.5.1",
"react": "^15.4.2",
"react-dom": "^15.4.2",
"react-redux": "^5.0.3",
"react-router": "^4.0.0",
"redux": "^3.6.0",
"sass-loader": "^6.0.3",
"webpack": "^2.3.2"
},
"devDependencies": {
"html-webpack-plugin": "^2.28.0",
"node-sass": "^4.5.1",
"nodemon": "^1.11.0",
"sass-loader": "^6.0.3"
}
}
Webpack may not be treating __dirname as you want it to and may be resolving it to / instead. Try adding this to your webpack config:
{
node: {
__dirname: true
}
}
this can be because of multiple reasons the best way to identify the exact issue is to tryout the below two commands:
if you are running webpack 1/2 alone then use the snippet:
webpack --display-error-details
if you are running the webpack dev server then use the snippet:
webpack-dev-server --display-error-details
this would provide a detailed error report in the console
So I am trying to compile some vue.js code using webpack, but when I try to run webpack from command prompt I get the following error:
ERROR in Cannot find module 'core-js/library/fn/symbol/iterator'.
I can't get my head around this error and I don't know if I'm missing any dependencies.
Please let me know if there's something that's not right.
Here's my webpack.config:
module.exports = {
// This is the "main" file which should include all other modules
entry: './view/vue/main.js',
// Where should the compiled file go?
output: {
path: './layout/standard/js',
filename: 'vue-build.js'
},
module: {
// Special compilation rules
loaders: [
{
test: /\.js$/,
loader: 'babel',
exclude: /node_modules/
},
{
test: /\.vue$/,
loader: 'vue'
}
]
},
vue: {
loaders: {
js: 'babel'
}
}
}
And package.json:
{
"author": "CDG",
"license": "ISC",
"private": true,
"scripts": {
"prod": "gulp -p | webpack -p",
"dev": "gulp watch | webpack --watch"
},
"dependencies": {
"vue": "^1.0.27",
"vue-clickaway": "^1.1.3",
"vue-resource": "^0.9.3",
"vue-socket.io": "^1.0.2",
"vue-spinner": "^1.0.2",
"vuex": "^1.0.0-rc.2"
},
"devDependencies": {
"babel-core": "^6.1.2",
"babel-loader": "^6.1.0",
"babel-plugin-transform-runtime": "^6.1.2",
"babel-preset-es2015": "^6.14.0",
"babel-preset-stage-0": "^6.1.2",
"babel-runtime": "^5.8.0",
"css-loader": "^0.23.0",
"style-loader": "^0.13.0",
"vue-html-loader": "^1.0.0",
"vue-loader": "^7.3.0",
"webpack": "^1.12.2"
}
}
And .babelrc:
{
"presets": ["es2015", "stage-0"],
"plugins": ["transform-runtime"]
}
Please help me with this problem, it's really bugging me.
Thank you!
EDIT:
I did manage to solve the issue running npm i core-js, but now I have the following error when typing webpack: ERROR in Cannot find module "./_baseClone", what am I missing?
Clearly I'm missing something incredibly simple here, so I apologize in advance for the dumb question. I have no errors so it's difficult to Google.
I'm trying to export something, anything, from an npm package written in ES6, compiled with babel and webpack.
I followed this http://jamesknelson.com/using-es6-in-the-browser-with-babel-6-and-webpack/ for my webpack setup, leaving it mostly-identical, but find it below for reference. I made a test export repo just to make sure it wasn't anything in the code of the module I was trying to export; find that below as well. Any help would be greatly appreciated; at this point I feel like I'm taking crazy pills.
src/index.js
const test = "test";
export default test;
webpack.config.js
var path = require("path");
var webpack = require("webpack");
module.exports = {
entry: [
"babel-polyfill",
"./src/index"
],
output: {
//path: path.join(__dirname, "lib"),
//filename: "[name].js"
filename: "./lib/index.js"
},
// import bare, .js, and .jsx files
resolve: {
extensions: ["", ".js", ".jsx"]
},
devtool: "source-map",
module: {
loaders: [
{
loader: "babel-loader",
// only load src
include: [
path.resolve(__dirname, "src")
],
// only compile .js and .jsx files
test: /\.jsx?$/,
query: {
plugins: ["transform-runtime", "transform-decorators-legacy"],
//plugins: ["transform-decorators-legacy"],
presets: ["es2015", "stage-0", "react"]
}
},
]
},
debug: true
};
package.json
{
"name": "test-package",
"version": "0.0.1",
"description": "test",
"main": "lib/index.js",
"repository": {
"type": "git",
"url": "git+https://github.com/xxx/xxx.git"
},
"scripts": {
"start": "webpack-dev-server"
},
"keywords": [
"es6"
],
"author": "me",
"license": "MIT",
"bugs": {
"url": "https://github.com/xxx/xxx/issues"
},
"homepage": "https://github.com/xxx/xxx#readme",
"dependencies": {
"babel-polyfill": "^6.5.0",
"babel-runtime": "^6.5.0"
},
"devDependencies": {
"babel-core": "^6.5.2",
"babel-loader": "^6.2.3",
"babel-plugin-transform-decorators-legacy": "^1.3.4",
"babel-plugin-transform-runtime": "^6.5.2",
"babel-preset-es2015": "^6.5.0",
"babel-preset-react": "^6.5.0",
"babel-preset-stage-0": "^6.5.0",
"webpack": "^1.12.14",
"webpack-dev-server": "^1.14.1"
}
}
webpack -p
other project
npm i ../test-package
(verify actually installed, search for "test" in lib/index.js and find what should be the export)
import test from "test-package";
console.log(test);
console.log(Object.keys(test));
output: empty object, empty array
Why not trying
import * as test from "test-package";
And then
console.log(test);