rollup.config.js

import typescript from "rollup-plugin-typescript";
import { uglify } from 'rollup-plugin-uglify';
import * as tsc from "typescript";
import { argv } from "yargs";

let CONFIG;

if (process.env.es2015) {
  CONFIG = {
    format: "es",
    plugins: [
      typescript({
        typescript: tsc,
        module: "es2015",
        target: "es2015",
        types: [],
        exclude: [
          "node_modules",
          "**/*.spec.ts"
        ]
      })
    ]
  };
}

if (process.env.es5) {
  CONFIG = {
    format: "es",
    plugins: [
      typescript({
        typescript: tsc,
        module: "es2015",
        target: "es5",
        types: [],
        exclude: [
          "node_modules",
          "**/*.spec.ts"
        ]
      })
    ],
    external: ["tslib"]
  };
}

if (process.env.umd) {
  CONFIG = {
    format: "umd",
    exports: "named",
    moduleName: argv.name,
    plugins: [
      typescript({
        typescript: tsc,
        module: "es2015",
        target: "es5",
        types: [],
        exclude: [
          "node_modules",
          "**/*.spec.ts"
        ]
      })
    ],
    external: ["tslib"]
  };
}

if (process.env.min) {
  CONFIG = {
    format: "umd",
    exports: "named",
    moduleName: argv.name,
    plugins: [
      typescript({
        typescript: tsc,
        module: "es2015",
        target: "es5",
        types: [],
        exclude: [
          "node_modules",
          "**/*.spec.ts"
        ]
      }),
      uglify()
    ],
    external: ["tslib"]
  };
}

export default CONFIG;