code: function startCreateDefaultReExportEsms() {
  
    return globby([_path.resolve(`${inputLibOpenflPath}`, `**/*.js`)]).then(paths => {
  
      for (let path of paths) {
  
        // Skip the barrel index.js and index.esm.js files
        if (path.match(/index(\.js|\.d\.ts)$/) != null) {
          continue;
        }
        
  
        let content = delayFS.readFileSyncUTF8(path);
        let esmFilePath = path.replace(fullInputLibDirPath + '/', fullOutputLibDirPath + '/');
        
        
        let result = createDefaultReExportEsm(content, path);
        delayFS.mkDirByPathSync(_path.dirname(esmFilePath));
        
        if (path.indexOf('AssetLibrary') > -1) {
          delayFS.writeFileSyncUTF8(esmFilePath, result, {tags: 'rexport', createOnly: true});
        } else {
          delayFS.writeFileSyncUTF8(esmFilePath, result, 'rexport');
        }
      }
    });
  }
docs: The generated es2015 module will contain: export { default } from "./../../_gen/openfl/display/Sprite");