rollup.config.js

const { defineConfig } = require('rollup')
const path = require('path')
const chalk = require('chalk')
const ts = require('rollup-plugin-typescript2')
const { nodeResolve } = require('@rollup/plugin-node-resolve')
const commonjs = require('@rollup/plugin-commonjs')
const json = require('@rollup/plugin-json')
const strip = require('@rollup/plugin-strip')
const alias = require('@rollup/plugin-alias')
const inject = require('@rollup/plugin-inject')

function createConfig(target) {
  const packagesDir = path.resolve(__dirname, 'packages')
  const packageDir = path.resolve(packagesDir, target)
  const resolve = (p) => path.resolve(packageDir, p)
  const packageJson = require(resolve('package.json'))
  const banner = `\
/*!
 * ${packageJson.name} v${packageJson.version}
 * https://github.com/voldikss/${target}
 * Released under the MIT License.
 */
`
  return defineConfig({
    input: resolve('src/index.ts'),
    output: {
      file: resolve(packageJson.main ?? 'lib/index.js'),
      format: 'cjs',
      sourcemap: false,
      inlineDynamicImports: true,
      banner,
    },
    external: ['coc.nvim'],
    plugins: [
      json(),
      ts({
        check: false,
        tsconfig: path.resolve(__dirname, 'tsconfig.json'),
        exclude: ['**/__tests__'],
      }),
      alias({
        entries: [
          {
            find: 'adapter',
            replacement: path.resolve(
              __dirname,
              './packages/coc-translator/node_modules/axios/lib/adapters/http.js',
            ),
          },
        ],
      }),
      strip({
        include: ['**/*.ts', '**/*.js'],
        functions: ['console.*'],
      }),
      commonjs({
        sourceMap: false,
        requireReturnsDefault: 'auto',
      }),
      nodeResolve({
        preferBuiltins: true,
      }),
      // related: https://github.com/neoclide/coc.nvim/issues/3405
      inject({
        URL: ['url', 'URL'],
      }),
    ],
    onwarn: (msg, warn) => {
      if (msg.code === 'CIRCULAR_DEPENDENCY') {
        if (/index\.ts$/.test(msg.cycle.at(0)) && /index\.ts$/.test(msg.cycle.at(-1))) {
          console.error(chalk.red('Circular Dependency Detected:'))
          console.error(chalk.red(msg.message))
          console.error(chalk.yellow('[Hint] Self-import is not allowed'))
          process.exit(1)
        }
      } else {
        // warn(msg)
      }
    },
    treeshake: {
      annotations: true,
      moduleSideEffects: false,
    },
  })
}

if (process.env.TARGET) {
  module.exports = createConfig(process.env.TARGET)
} else {
  module.exports = createConfig
}