rollup.config.mjs

import typescript from '@rollup/plugin-typescript';
import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import wasm from '@rollup/plugin-wasm';
import copy from 'rollup-plugin-copy';
import { resolve as resolvePath } from 'path';
import { fileURLToPath } from 'url';
import { dirname } from 'path';

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
const wasmSource = resolvePath(__dirname, 'node_modules/@privyid/ghostscript/dist/gs.wasm');

export default [
  {
    // Main library
    input: 'src/thumbnailer.ts',
    output: [
      {
        file: 'dist/thumbnailer.js',
        format: 'es',
        sourcemap: true
      },
      {
        file: 'dist/thumbnailer.umd.js',
        format: 'umd',
        name: 'Thumbnailer',
        sourcemap: true
      }
    ],
    external: ['@privyid/ghostscript'],
    plugins: [
      typescript(),
      resolve({ browser: true, extensions: ['.js', '.ts', '.tsx', '.wasm'] }),
      commonjs(),
      wasm({
        targetEnv: 'auto'
      })
    ]
  },
  {
    // Worker
    input: 'src/worker.ts',
    output: {
      file: 'dist/worker.js',
      format: 'es',
      sourcemap: true,
    },
    plugins: [
      typescript(),
      resolve({ browser: true, extensions: ['.js', '.ts', '.tsx', '.wasm'] }),
      commonjs(),
      wasm({
        targetEnv: 'auto'
      }),
      copy({
        targets: [
          { src: wasmSource, dest: 'dist' },
        ]
      })
    ]
  },
  {
    // Demo application
    input: 'demo/demo.ts',
    output: {
      file: 'demo/demo.js',
      format: 'iife',
      sourcemap: true
    },
    plugins: [
      typescript({
        tsconfig: './tsconfig.demo.json'
      }),
      resolve({ browser: true }),
      commonjs()
    ]
  }
];