element-plus/build/rollup.config.js

import vue from 'rollup-plugin-vue'
import typescript from 'rollup-plugin-typescript2'
import css from 'rollup-plugin-css-only'
import { nodeResolve } from '@rollup/plugin-node-resolve'
import commonjs from '@rollup/plugin-commonjs'
import { terser } from 'rollup-plugin-terser'
import path from 'path'
import { getPackagesSync } from '@lerna/project'

const inputs = getPackagesSync()
  .map(pkg => pkg.name)
  .filter(name =>
    name.includes('@element-plus') &&
    !name.includes('transition') &&
    !name.includes('utils'),
  )

export default inputs.map(name => ({
  input: path.resolve(__dirname, `../packages/${name.split('@element-plus/')[1]}/index.ts`),
  output: {
    format: 'es',
    file: `lib/${name.split('@element-plus/')[1]}/index.js`,
    paths(id) {
      if (/^@element-plus/.test(id)) {
        return id.replace('@element-plus', '..')
      }
    },
  },
  plugins: [
    terser({
      module: true,
      compress: {
        ecma: 2015,
        pure_getters: true,
      },
    }),
    nodeResolve(),
    commonjs(),
    typescript({
      tsconfigOverride: {
        compilerOptions: {
          declaration: false,
        },
      },
      abortOnError: false,
    }),
    css(),
    vue({
      target: 'browser',
      css: false,
    }),
  ],
  external(id) {
    return /^vue/.test(id) || /^@element-plus/.test(id)
  },
}))