message: refactor(ivy): ngcc - remove unused check for format support
  Now that `ngcc` supports all `EntryPointFormat`s, there is no need to
  check if a format is supported, so this operation was a no-op.
  PR Close
diff: * found in the LICENSE file at https://angular.io/license
  */
  import {AbsoluteFsPath, FileSystem, absoluteFrom, dirname, getFileSystem, resolve} from '../../src/ngtsc/file_system';
  +
  import {CommonJsDependencyHost} from './dependencies/commonjs_dependency_host';
  import {DependencyResolver, InvalidEntryPoint, SortedEntryPointsInfo} from './dependencies/dependency_resolver';
  import {EsmDependencyHost} from './dependencies/esm_dependency_host';
  @@ -17,7 +18,7 @@ import {ConsoleLogger, LogLevel} from './logging/console_logger';
  import {Logger} from './logging/logger';
  import {hasBeenProcessed, markAsProcessed} from './packages/build_marker';
  import {NgccConfiguration} from './packages/configuration';
  -import {EntryPoint, EntryPointFormat, EntryPointJsonProperty, SUPPORTED_FORMAT_PROPERTIES, getEntryPointFormat} from './packages/entry_point';
  +import {EntryPoint, EntryPointJsonProperty, SUPPORTED_FORMAT_PROPERTIES, getEntryPointFormat} from './packages/entry_point';
  import {makeEntryPointBundle} from './packages/entry_point_bundle';
  import {Transformer} from './packages/transformer';
  import {PathMappings} from './utils';
  @@ -25,6 +26,7 @@ import {FileWriter} from './writing/file_writer';
  import {InPlaceFileWriter} from './writing/in_place_file_writer';
  import {NewEntryPointFileWriter} from './writing/new_entry_point_file_writer';
  +
  /**
  * The options to configure the ngcc compiler.
  */
  @@ -68,8 +70,6 @@ export interface NgccOptions {
  fileSystem?: FileSystem;
  }
  -const SUPPORTED_FORMATS: EntryPointFormat[] = ['esm5', 'esm2015', 'umd', 'commonjs'];
  -
  /**
  * This is the main entry-point into ngcc (aNGular Compatibility Compiler).
  *
  @@ -110,14 +110,14 @@ export function mainNgcc(
  const hasProcessedDts = hasBeenProcessed(entryPointPackageJson, 'typings');
  - for (let i = 0; i < propertiesToConsider.length; i++) {
  - const property = propertiesToConsider[i] as EntryPointJsonProperty;
  + for (const property of propertiesToConsider as EntryPointJsonProperty[]) {
  const formatPath = entryPointPackageJson[property];
  const format = getEntryPointFormat(fileSystem, entryPoint, property);
  // No format then this property is not supposed to be compiled.
  - if (!formatPath || !format || SUPPORTED_FORMATS.indexOf(format) === -1) continue;
  + if (!formatPath || !format) continue;
  + // The `formatPath` which the property maps to is already processed - nothing to do.
  if (hasBeenProcessed(entryPointPackageJson, property)) {
  compiledFormats.add(formatPath);
  logger.debug(`Skipping ${entryPoint.name} : ${property} (already compiled).`);
  