message: perf(ngcc): only load  if it is needed
  PR Close
diff: @@ -44,7 +44,6 @@ import {NgccConfiguration} from './packages/configuration';
  import {EntryPoint, EntryPointJsonProperty, EntryPointPackageJson, getEntryPointFormat, SUPPORTED_FORMAT_PROPERTIES} from './packages/entry_point';
  import {makeEntryPointBundle} from './packages/entry_point_bundle';
  import {EntryPointManifest, InvalidatingEntryPointManifest} from './packages/entry_point_manifest';
  -import {Transformer} from './packages/transformer';
  import {PathMappings} from './utils';
  import {cleanOutdatedPackages} from './writing/cleaning/package_cleaner';
  import {FileWriter} from './writing/file_writer';
  @@ -315,6 +314,7 @@ export function mainNgcc({
  const createCompileFn: CreateCompileFn = onTaskCompleted => {
  const fileWriter = getFileWriter(
  fileSystem, logger, pkgJsonUpdater, createNewEntryPointFormats, errorOnFailedEntryPoint);
  + const {Transformer} = require('./packages/transformer');
  const transformer = new Transformer(fileSystem, logger, tsConfig);
  return (task: Task) => {
  