/**
 * Copyright 2022 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import glob from 'glob';
import dts from 'rollup-plugin-dts';
import resolve from 'rollup-plugin-node-resolve';

export default ['cjs', 'esm'].flatMap(outputType => {
  const configs = [];
  // Note we don't use path.join here. We cannot since `glob` does not support
  // the backslash path separator.
  const thirdPartyPath = `lib/${outputType}/third_party`;
  for (const jsFile of glob.sync(`${thirdPartyPath}/**/*.js`)) {
    configs.push({
      input: jsFile,
      output: {file: jsFile, format: outputType},
      plugins: [resolve()],
    });
  }
  for (const typesFile of glob.sync(`${thirdPartyPath}/**/*.d.ts`)) {
    configs.push({
      input: typesFile,
      output: {file: typesFile, format: outputType},
      plugins: [dts({respectExternal: true})],
    });
  }
  return configs;
});