webpack.config.js

const path = require("path");
const webpack = require("webpack");
const argv = require("yargs").argv;
const fs = require("fs");
const fnPrefix = JSON.parse(fs.readFileSync(path.resolve(__dirname, "package.json"), "utf-8")).name.replace("grimoirejs", "grimoire");

const getBuildTask = (fileName, plugins, needPolyfill) => {

    return {
        cache: true,
        entry: needPolyfill ? ['babel-polyfill', path.resolve(__dirname, "src/index.ts")] : path.resolve(__dirname, "src/index.ts"),
        output: {
            path: __dirname,
            filename: "/register/" + fileName,
            libraryTarget: "umd"
        },
        module: {
            loaders: [{
                test: /\.ts$/,
                exclude: /node_modules/,
                loader: "babel-loader?presets[]=es2015,presets[]=stage-2!ts-loader"
            }]
        },
        resolve: {
            extensions: ['.ts', '.js']
        },
        plugins: plugins,
        devtool: 'source-map'
    }
};

module.exports = (env) => {
    env = env || {};
    const buildTasks = [getBuildTask(fnPrefix + ".js", [])]

    if (env.prod) {
        buildTasks.push(getBuildTask("index.js", [])); // for npm registeirng
        buildTasks.push(getBuildTask(fnPrefix + ".min.js", [
            new webpack.optimize.UglifyJsPlugin({
                compress: {
                    warnings: false
                }
            }),
            new webpack.optimize.OccurrenceOrderPlugin(),
            new webpack.optimize.AggressiveMergingPlugin()
        ]));
    }
    return buildTasks;
};