การกำหนดค่าสำหรับBabel 7 & Webpack 4
package.json
...
"scripts": {
"start": "webpack-dev-server --env.dev",
"build": "webpack --env.prod",
},
"keywords": [],
"author": "",
"license": "ISC",
"devDependencies": {
"@babel/core": "^7.0.0",
"@babel/plugin-proposal-class-properties": "^7.0.0",
"@babel/preset-env": "^7.0.0",
"@babel/preset-react": "^7.0.0",
"@babel/register": "^7.0.0",
"babel-loader": "^8.0.0",
...
"webpack": "^4.17.2",
"webpack-cli": "^3.1.0",
"webpack-config-utils": "^2.3.1",
"webpack-dev-server": "^3.1.8"
.babelrc
{
"presets": ["@babel/preset-env", "@babel/preset-react"],
"plugins": ["@babel/plugin-proposal-class-properties"]
}
webpack.config.babel.js
import webpack from 'webpack';
import { resolve } from 'path';
import { getIfUtils, removeEmpty } from 'webpack-config-utils';
export default env => {
const { ifProd, ifNotProd } = getIfUtils(env);
return {
mode: ifProd('production', 'development'),
devtool: ifNotProd('cheap-module-source-map'),
output: {
path: resolve(__dirname, ifProd('prod', 'dev')),
filename: 'bundle.js'
},