rollup.config.js

/* eslint-disable no-undef */
import pluginTypescript from "@rollup/plugin-typescript";
import pluginCommonjs from "@rollup/plugin-commonjs";
import pluginNodeResolve from "@rollup/plugin-node-resolve";
import clear from "rollup-plugin-clear";
import { babel } from "@rollup/plugin-babel";
import * as path from "path";
import pkg from "./package.json";

const moduleName = pkg.name.replace(/^@.*\//, "");
const inputFileName = "src/index.ts";
const author = pkg.author;
const banner = `
  /**
   * @license
   * author: ${author}
   * ${moduleName}.js v${pkg.version}
   * Released under the ${pkg.license} license.
   */
`;
const arExternals = [
  ...Object.keys(pkg.dependencies || {}),
  ...Object.keys(pkg.devDependencies || {}),
  ...Object.keys(pkg.peerDependencies || {}),
];

export default [
  {
    input: inputFileName,
    output: [
      {
        file: pkg.module,
        format: "es",
        sourcemap: "inline",
        banner,
        exports: "named",
      },
      {
        file: pkg.main,
        format: "cjs",
        sourcemap: "inline",
        banner,
        exports: "named",
      },
    ],
    external: arExternals,
    plugins: [
      clear({
        targets: ["dist"],
      }),
      pluginTypescript(),
      pluginCommonjs({
        extensions: [".js", ".ts"],
      }),
      babel({
        babelHelpers: "bundled",
        configFile: path.resolve(__dirname, ".babelrc.js"),
      }),
      pluginNodeResolve({
        browser: false,
      }),
    ],
  },
];