rally-tools/rollup.config.js

import nodeResolve from "rollup-plugin-node-resolve";
import commonjs from "rollup-plugin-commonjs";
import json from "rollup-plugin-json";
import babel from "rollup-plugin-babel";

import packagejson from "./package.json";

let config = {
    input: "-----",
    external: [
        ...Object.keys(packagejson.dependencies),
        "path", "fs", "chalk", "os", "child_process", "perf_hooks"
    ],
    output: {
        file: "----",
        format: "cjs",

        banner: `
#!/usr/bin/env node
/*----------------------------------------------
 * Generated by rollup. Written by John Schmidt.
 * Rally Tools CLI v${packagejson.version}
 *--------------------------------------------*/
const importLazy = require("import-lazy")(require);
`.substring(1),

        name: "RallyTools",
        sourcemap: true,
    },
    plugins: [
        nodeResolve({
            preferBuiltins: true,
            module: true,
            //jsnext: true,
        }),
        commonjs({
            include: "node_modules/**",
            extensions: [".js"],
        }),
        json(),
        babel({
            presets: [
                ["@babel/env", {
                    "targets": {
                        "node": "8.11.3",
                    },
                    "modules": false,
                }]
            ],
            plugins: [
                ["@babel/proposal-decorators", {legacy: true}],
                "@babel/proposal-optional-chaining",
            ],
        }),
    ],
}

function newConfig(input, output, format="cjs"){
    let newOut = {...config.output};
    newOut.file = output;
    newOut.format = format
    if(format !== "cjs"){
        newOut.banner = "";
    }
    let c = {
        ...config,
        input, output: newOut,
    }
    return c;
}

export default [
    newConfig("src/cli.js", "./bundle.js", "cjs"),
    newConfig("src/index.js", "./web.js", "umd"),
];