webpack 3多入口打包

const path = require('path');
const webpack = require('webpack');
const merge = require('webpack-merge');
const webpackBaseConfig = require('./webpack.base.config.js');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const CompressionPlugin = require('compression-webpack-plugin');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const glob = require("glob");

const VER = "20191214a";

const getEntries = (globPath, flag) => {
    const files = glob.sync(globPath);

    let entries = {},
        entry, dirname, basename, pathname, extname;

    files.forEach(item => {
        entry = item;
        dirname = path.dirname(entry);//当前目录
        extname = path.extname(entry);//后缀
        basename = path.basename(entry, extname);//文件名
        pathname = path.join(dirname, basename);//文件路径
        if (extname === '.html') {
            entries[pathname] = './' + entry;
        } else if (extname === '.js') {
            entries[basename] = entry;
        }
    });

    return entries;
}

const entries = getEntries('./src/*.js');

process.env.NODE_ENV = 'production';

module.exports = merge(webpackBaseConfig, {
    devtool: 'source-map',
    entry: entries,
    output: {
        path: path.resolve(__dirname, '../dist/' + VER),
        publicPath: '/dist/',
        filename: '[name].min.js',
        library: 'iViewPro',
        libraryTarget: 'umd',
        umdNamedDefine: true
    },
    externals: {
        vue: {
            root: 'Vue',
            commonjs: 'vue',
            commonjs2: 'vue',
            amd: 'vue'
        },
    },
    plugins: [
        new CleanWebpackPlugin({
            cleanOnceBeforeBuildPatterns: ["*.js", "*.gz"]
        }),
        // @todo
        new webpack.DefinePlugin({
            'process.env.NODE_ENV': '"production"'
        }),
        new UglifyJsPlugin({
            parallel: true,
            sourceMap: false
        }),
        new CompressionPlugin({
            asset: '[path].gz[query]',
            algorithm: 'gzip',
            test: /\.(js|css)$/,
            threshold: 10240,
            minRatio: 0.8
        })
    ]
});