instantsearch/packages/react-instantsearch/rollup.config.mjs at 671ad53678710b8b8d3f6a7bcf91b8f62b2fb8ea · algolia/instantsearch · GitHub

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import {
  createESMConfig,
  createCJSConfig,
  createUMDConfig,
  createBanner,
  collectSourceEntries,
} from '../../scripts/build/rollup.base.mjs';
import pkg from './package.json' with { type: 'json' };

const moduleInput = collectSourceEntries();
const umdInput = 'src/index.ts';
const isESM = process.env.BUILD_FORMAT === 'esm';
const isCJS = process.env.BUILD_FORMAT === 'cjs';
const isUMD = process.env.BUILD_FORMAT === 'umd';

const banner = createBanner({
  name: 'React InstantSearch',
  version: pkg.version,
});

// When BUILD_FORMAT is set, only build that format
// Otherwise, build all (for watch mode)
const configs = [];

if (isESM || (!isESM && !isCJS && !isUMD)) {
  configs.push(
    createESMConfig({
      input: moduleInput,
      pkg,
      outputDir: 'dist/es',
      preserveModules: true,
    })
  );
}

if (isCJS || (!isESM && !isCJS && !isUMD)) {
  configs.push(
    createCJSConfig({
      input: moduleInput,
      pkg,
      outputDir: 'dist/cjs',
      preserveModules: true,
      replaceImports: {
        'instantsearch.js/es': 'instantsearch.js/cjs',
      },
    })
  );
}

if (isUMD || (!isESM && !isCJS && !isUMD)) {
  configs.push(
    ...createUMDConfig({
      input: umdInput,
      pkg,
      name: 'ReactInstantSearch',
      banner,
      outputDir: 'dist/umd',
      fileName: 'ReactInstantSearch',
      legacyFileNames: true,
      globals: {
        react: 'React',
      },
    })
  );
}

export default configs;