creates a minimum configuration of rollup from an object, similar to the operation of microbundle, but without intervening on the dependencies of plugins.

import pkg from "./package.json";
import prepare from "rollup-prepare";

export default {
   ...prepare({
       pkg,
       ignore: ["umd:es5"],
       globals: {
           atomico: "atomico"
       },
       external : ["atomico"]
   })
};

"main": "dist/example.js",
"umd:main": "dist/example.umd.js",
"umd:es5": "dist/example.es5.umd.js",
"module": "dist/example.m.js",
"source": "src/index.js",

umd:*, generate more than one output associated with the type of build.

By default, the name of the file will be taken for the definition of the UMD and IIFE module.

Ignore properties associated with the build main|umd|module|iife type.

Define global dependencies, these can also be defined within package.globals

Define the external dependencies, these defaults are extracted from ** package.dependencies **

By default, the rollup log is ignored based on the following regular expression /MIXED_EXPORTS|MISSING_GLOBAL_NAME|MIXED_EXPORTS/. to disable this option simply define logger: false.