rollup.config.mjs

import commonjs from '@rollup/plugin-commonjs'
import copy from 'rollup-plugin-copy'
import typescript from '@rollup/plugin-typescript'
import { nodeResolve } from '@rollup/plugin-node-resolve'
import replace from '@rollup/plugin-replace'

export default [
  // electron
  {
    input: 'main-src/main.ts',
    strictDeprecations: true,
    output: [
      {
        file: 'build/main.js',
        format: 'cjs',
        sourcemap: false
      },
    ],
    plugins: [
      typescript({
        tsconfig: './main.tsconfig.json'
      }),
      copy({
        targets: [
          { src: './assets/*', dest: './build/' },
        ]
      }),
    ]
  },
  // preload
  {
    input: 'preload-src/preload.ts',
    strictDeprecations: true,
    output: [
      {
        file: 'build/preload.js',
        format: 'cjs',
        sourcemap: false
      }  
    ],
    plugins: [
      typescript({
        tsconfig: './preload.tsconfig.json'
      }),
    ]
  },
  // renderer
  {
    input: 'renderer-src/index.tsx',
    strictDeprecations: true,
    output: [
      {
        file: 'build/index.js',
        format: 'module',
        sourcemap: true,
        globals: [
          'react',
        ],
      },
    ],
    plugins: [
      typescript({
        tsconfig: './renderer.tsconfig.json'
      }),
      commonjs({
        include: './node_modules/**',
      }),
      nodeResolve(),
      replace({
        'process.env.NODE_ENV': JSON.stringify('production'),
        preventAssignment: true,
      }),
    ]
  },
  {
    input: 'renderer-src/settings.tsx',
    output: [
      {
        file: 'build/settings.js',
        format: 'module',
        sourcemap: true,
        globals: [
          'react',
        ],
      },
    ],
    plugins: [
      typescript({
        tsconfig: './renderer.tsconfig.json'
      }),
      commonjs({
        include: './node_modules/**',
      }),
      nodeResolve(),
      replace({
        'process.env.NODE_ENV': JSON.stringify('production'),
        preventAssignment: true,
      }),
    ]
  }
]