generator-d3-plugin/app/templates/_rollup.node.js

Yeoman generator for D3 v4 plugins

var fs = require("fs"),
    rollup = require("rollup"),
    dependencies = require("./package.json").dependencies;

function abort(error) {
    // eslint-disable-next-line no-console
    console.error(error.stack);
}

rollup.rollup({
    entry: "index.js",
    external: Object.keys(dependencies)
}).then(function(bundle) {
    var code = bundle.generate({
        format: "cjs"
    }).code.replace(
        /^exports\.event = (.*);$/m,
        "Object.defineProperty(exports, \"event\", {get: function() { return $1; }});"
    );
    return new Promise(function(resolve, reject) {
        fs.writeFile("build/d3.node.js", code, "utf8", function(error) {
            if (error) return reject(error);
            else resolve();
        });
    });
}).catch(abort);