ts-transformer-visualizer/lib/rollup.config.js

import typescript from "rollup-plugin-typescript2";
import commonjs from "rollup-plugin-commonjs";
import external from "rollup-plugin-peer-deps-external";
// import postcss from 'rollup-plugin-postcss-modules'
import postcss from "rollup-plugin-postcss";
import resolve from "rollup-plugin-node-resolve";
import url from "rollup-plugin-url";
import svgr from "@svgr/rollup";

import pkg from "./package.json";

export default {
  input: "src/index.tsx",
  output: [
    {
      file: pkg.main,
      format: "cjs",
      exports: "named",
      sourcemap: true
    },
    {
      file: pkg.module,
      format: "es",
      exports: "named",
      sourcemap: true
    }
  ],
  plugins: [
    external(),
    postcss({
      modules: true
    }),
    url(),
    svgr(),
    resolve(),
    typescript({
      rollupCommonJSResolveHack: true,
      clean: true
    }),
    commonjs({
      namedExports: {
        // left-hand side can be an absolute path, a path
        // relative to the current directory, or the name
        // of a module in node_modules
        "react-is": ["isValidElementType", "isContextConsumer"]
      }
    })
  ]
};