text: import babel from "rollup-plugin-babel";
  import babelrc from "babelrc-rollup";
  import resolve from "rollup-plugin-node-resolve";
  import commonjs from "rollup-plugin-commonjs";
  import json from "rollup-plugin-json";
  import multiEntry from "rollup-plugin-multi-entry";
  
  export default {
      plugins: [
          json(),
          babel(babelrc()),
          resolve({ preferBuiltins: true }),
          commonjs(),
          multiEntry()
      ],
      output: {
  
          format: "umd",
          name: "practice-1",
          sourcemap: true
      }
  };
  