rollup.config.js

import swc from 'rollup-plugin-swc'
import { nodeResolve } from '@rollup/plugin-node-resolve'
import replace from '@rollup/plugin-replace'
import commonjs from '@rollup/plugin-commonjs'
import browsersEsm from '@trigen/browserslist-config/browsers-esm'
import nodeEsm from '@trigen/browserslist-config/node-esm'
import browsers from '@trigen/browserslist-config/browsers'
import node from '@trigen/browserslist-config/node'
import pkg from './package.json'

const extensions = ['.js', '.ts']
const external = _ => /node_modules/.test(_) && !/@swc\/helpers/.test(_)
const plugins = targets => [
  nodeResolve({
    extensions
  }),
  replace({
    preventAssignment: true,
    values: {
      'process.env.NODE_ENV': JSON.stringify(
        process.env.ROLLUP_WATCH
          ? 'development'
          : 'production'
      )
    }
  }),
  swc({
    jsc: {
      parser: {
        syntax: 'typescript'
      },
      externalHelpers: true
    },
    env: {
      targets
    },
    module: {
      type: 'es6'
    },
    sourceMaps: true
  })
]

export default process.env.NODE_ENV !== 'development' ? [
  {
    input: pkg.main,
    plugins: plugins(browsersEsm.concat(nodeEsm).join(', ')),
    external,
    output: {
      file: pkg.publishConfig.module,
      format: 'es',
      sourcemap: true
    }
  },
  {
    input: pkg.main,
    plugins: plugins(browsers.concat(node).join(', ')),
    external,
    output: {
      file: pkg.publishConfig.main,
      format: 'cjs',
      sourcemap: true
    }
  }
] : {
  input: pkg.main,
  plugins: [...plugins(browsersEsm.join(', ')), commonjs()],
  output: {
    file: './dist/umd.js',
    format: 'umd',
    exports: 'named',
    name: 'canvg',
    sourcemap: true
  }
}