rollup.config.js

import typescript from '@rollup/plugin-typescript';
import pkg from './package.json';

function getAuthors() {
  const { contributors, author } = pkg;
  const authors = new Set();

  if (contributors) {
    contributors.forEach((contributor) => {
      authors.add(contributor.name);
    });
  }
  if (author) authors.add(author.name);

  return Array.from(authors).join(', ');
}

const banner = `/*!
  * ${pkg.name} v${pkg.version}
  * (c) ${new Date().getFullYear()} ${getAuthors()}
  * @license ${pkg.license}
  */`;

const name = 'vuecloak';
const globals = {
  'keycloak-js': 'Keycloak',
};

const outputConfigs = {
  cjs: pkg.main,
  es: pkg.module,
  umd: pkg.browser,
};

const outputFormats = Object.keys(outputConfigs);

function createOutput(file, format) {
  return {
    file, format, banner, name, globals,
  };
}

export default {
  input: 'src/index.ts',
  output: outputFormats.map((format) => createOutput(outputConfigs[format], format)),
  external: ['keycloak-js', '@vue/devtools-api'],
  plugins: [typescript()],
};