rollup.config.js

import swc from 'rollup-plugin-swc';
import { nodeResolve } from '@rollup/plugin-node-resolve';
import { terser } from 'rollup-plugin-terser';
import pkg from './package.json';

const extensions = ['.js', '.ts', '.tsx'];
const external = _ => /node_modules/.test(_) && !/@swc\/helpers/.test(_);
const plugins = (targets, minify) =>
  [
    nodeResolve({
      extensions
    }),
    swc({
      jsc: {
        parser: {
          syntax: 'typescript'
        },
        externalHelpers: true
      },
      env: {
        targets
      },
      module: {
        type: 'es6'
      },
      sourceMaps: true
    }),
    minify && terser()
  ].filter(Boolean);

export default [
  {
    input: pkg.main,
    plugins: plugins('defaults, not ie 11, not ie_mob 11'),
    external,
    output: {
      file: pkg.publishConfig.main,
      format: 'cjs',
      exports: 'named',
      sourcemap: true
    }
  },
  {
    input: pkg.main,
    plugins: plugins('defaults, not ie 11, not ie_mob 11', true),
    external: () => false,
    output: {
      file: pkg.unpkg,
      format: 'umd',
      name: 'Chartist',
      exports: 'named',
      sourcemap: true
    }
  },
  {
    input: pkg.main,
    plugins: plugins('defaults and supports es6-module'),
    external,
    output: {
      file: pkg.publishConfig.module,
      format: 'es',
      sourcemap: true
    }
  }
];