rollup.config.js

import scss from 'rollup-plugin-scss';
import postcss from 'postcss';
import autoprefixer from 'autoprefixer';
import typescript from 'rollup-plugin-typescript2';
import terser from '@rollup/plugin-terser';

// Dual CJS + ESM (so existing require() consumers keep working — this is a non-breaking minor).
// react / react-dom / zod / the core are external (peer or dependency), resolved at the
// consumer rather than bundled in.
const isExternal = (id) =>
  id === 'react' ||
  id === 'react-dom' ||
  id === 'zod' ||
  id === '@tanstack/ai' ||
  id === '@simplepdf/embed' ||
  id.startsWith('@simplepdf/embed/');

export default {
  // Three entries mirroring the core: the zod-free root, plus the opt-in agentic /ai-sdk
  // (pulls zod) and /tanstack-ai (pulls zod + @tanstack/ai). The root loads neither.
  input: { index: 'src/index.tsx', 'ai-sdk': 'src/ai-sdk.tsx', 'tanstack-ai': 'src/tanstack-ai.tsx' },
  output: [
    {
      dir: 'dist',
      format: 'cjs',
      exports: 'named',
      sourcemap: true,
      entryFileNames: '[name].cjs',
      chunkFileNames: 'chunks/[name]-[hash].cjs',
    },
    {
      dir: 'dist',
      format: 'es',
      exports: 'named',
      sourcemap: true,
      entryFileNames: '[name].esm.js',
      chunkFileNames: 'chunks/[name]-[hash].esm.js',
    },
  ],
  plugins: [
    scss({
      processor: () => postcss([autoprefixer()]),
      outputStyle: 'compressed',
      insert: true,
    }),
    // Build excludes test files so type-only `*.test-d.ts` assertions (still type-checked by
    // test:types) never emit declarations into dist / ship to npm.
    typescript({
      tsconfigOverride: {
        exclude: ['node_modules', 'src/**/*.test.ts', 'src/**/*.test.tsx', 'src/**/*.test-d.ts', 'vitest.setup.ts'],
      },
    }),
    terser({
      format: {
        comments: false,
      },
    }),
  ],
  external: isExternal,
};