【Webpack】JavaScriptを古いブラウザでも動作させる

npm i -D @babel/core @babel/preset-env babel-loader

const path = require('path');

module.exports = {
    mode: 'production',
    output: {
        path: path.resolve(__dirname, 'dist')
    },
    module: {
        rules: [
            {
                test: /\.m?js$/,
                exclude: /node_modules/,
                use: [
                    'babel-loader'
                ]
            }
        ]
    }
}

{
    "presets": ["@babel/preset-env"]
}

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