paymail-client/rollup.config.js at master · samooth/paymail-client · GitHub

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import babel from '@rollup/plugin-babel'
import builtins from 'rollup-plugin-node-builtins'
import commonJS from '@rollup/plugin-commonjs'
import fs from 'fs'
import globals from 'rollup-plugin-node-globals'
import terser  from '@rollup/plugin-terser'
import path from 'path';
import {fileURLToPath} from 'url';
import pkg from './package.json' with { type: "json" };
import replace from '@rollup/plugin-replace'
import resolve from '@rollup/plugin-node-resolve'

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

const PRODUCTION_BUILD = process.env.NODE_ENV === 'production'

export default [
  {
    input: path.resolve(__dirname, 'src', 'index.js'),
    external: isExternal,
    output: [
      {
        file: pkg.main,
        format: 'cjs'
      },
      {
        file: pkg.module,
        format: 'es'
      }
    ],
    plugins: [
      replace(getReplacements()),
      babel({
        presets: [
          [
            '@babel/preset-env',
            {
              modules: false,
              targets: {
                node: '10'
              }
            }
          ]
        ],
        plugins: getBabelPlugins()
      })
    ]
  },
  ...(PRODUCTION_BUILD
    ? [{
        input: path.resolve(__dirname, 'src', 'index.js'),
        external: ['bsv2'],
        output: [
          {
            file: pkg.unpkg,
            format: 'iife',
            name: pkg.library,
            globals: { bsv: 'bsv2' }
          }
        ],
        context: 'window',
        plugins: [
          replace(getReplacements()),
          globals(),
          builtins(),
          resolve({
            browser: true,
            preferBuiltins: true
          }),
          commonJS({ }),
          babel({
            exclude: ['../../node_modules/**', 'node_modules/**'],
            presets: [
              [
                '@babel/preset-env',
                {
                  modules: false,
                  targets: {
                    browsers: ['> 2%']
                  }
                }
              ]
            ],
            babelHelpers: 'runtime',
            plugins: getBabelPlugins({ includeTransformRuntime: true })
          }),
          terser({
            output: {
              preamble: getBanner()
            }
          })
        ]
      }]
    : [])
]

function isExternal (candidate) {
  return Object.keys(pkg.dependencies).some(dependency => {
    return candidate.startsWith(dependency)
  })
}

function getBanner () {
  const filePath = path.resolve(__dirname, 'src', 'banner.js')
  return fs.readFileSync(filePath).toString().trim()
}

function getBabelPlugins (options = {}) {
  const plugins = [
    '@babel/plugin-proposal-object-rest-spread'
  ]
  if (options.includeTransformRuntime) {
    plugins.push('@babel/plugin-transform-runtime')
  }
  return plugins
}

function getReplacements () {
  const replacements = {}
  for (const key in process.env) {
    replacements[`process.env.${key}`] = JSON.stringify(process.env[key])
  }
  replacements["preventAssignment"]=true
  return replacements
}