fix #27607, add dev_compiler summary to the SDK and move JS files

pkg/dev_compiler/lib/src/analyzer/context.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:args/args.dart' show ArgParser, ArgResults;
 import 'package:analyzer/file_system/file_system.dart'
     show ResourceProvider, ResourceUriResolver;
 import 'package:analyzer/file_system/physical_file_system.dart'
     show PhysicalResourceProvider;
 import 'package:analyzer/source/custom_resolver.dart';
@@ skipping 37 matching lines @@
 
   AnalyzerOptions(
       {this.summaryPaths: const [],
       String dartSdkPath,
       this.dartSdkSummaryPath,
       this.customUrlMappings: const {},
       this.packageRoot: null,
       this.packagePaths: const []})
       : dartSdkPath = dartSdkPath ?? getSdkDir().path;
 
-  AnalyzerOptions.fromArguments(ArgResults args)
-      : summaryPaths = args['summary'] as List<String>,
-        dartSdkPath = args['dart-sdk'] ?? getSdkDir().path,
-        dartSdkSummaryPath = args['dart-sdk-summary'],
-        customUrlMappings = _parseUrlMappings(args['url-mapping']),
-        packageRoot = args['package-root'],
-        packagePaths = (args['package-paths'] as String)?.split(',') ?? [];
+  factory AnalyzerOptions.fromArguments(ArgResults args) {
+    var sdkPath = args['dart-sdk'] ?? getSdkDir().path;
+    var sdkSummaryPath = args['dart-sdk-summary'];
+
+    if (sdkSummaryPath == null) {
+      sdkSummaryPath = path.join(sdkPath, 'lib', '_internal', 'ddc_sdk.sum');
+    } else if (sdkSummaryPath == 'build') {
+      // For building the SDK, we explicitly set the path to none.
+      sdkSummaryPath = null;
+    }
+
+    return new AnalyzerOptions(
+        summaryPaths: args['summary'] as List<String>,
+        dartSdkPath: sdkPath,
+        dartSdkSummaryPath: sdkSummaryPath,
+        customUrlMappings: _parseUrlMappings(args['url-mapping']),
+        packageRoot: args['package-root'],
+        packagePaths: (args['package-paths'] as String)?.split(',') ?? []);
+  }
 
   /// Whether to resolve 'package:' uris using the multi-package resolver.
   bool get useMultiPackage => packagePaths.isNotEmpty;
 
   static void addArguments(ArgParser parser) {
     parser
       ..addOption('summary',
           abbr: 's', help: 'summary file(s) to include', allowMultiple: true)
-      ..addOption('dart-sdk', help: 'Dart SDK Path', defaultsTo: null)
+      ..addOption('dart-sdk',
+          help: 'Dart SDK Path', defaultsTo: null, hide: true)
       ..addOption('dart-sdk-summary',
-          help: 'Dart SDK Summary Path', defaultsTo: null)
+          help: 'Dart SDK Summary Path', defaultsTo: null, hide: true)
       ..addOption('package-root',
           abbr: 'p', help: 'Package root to resolve "package:" imports')
       ..addOption('url-mapping',
           help: '--url-mapping=libraryUri,/path/to/library.dart uses\n'
               'library.dart as the source for an import of of "libraryUri".',
           allowMultiple: true,
           splitCommas: false)
       ..addOption('package-paths',
           help: 'use a list of directories to resolve "package:" imports');
   }
@@ skipping 80 matching lines @@
   return sdk;
 }
 
 /// Creates a [DartUriResolver] that uses the SDK at the given [sdkPath].
 DartUriResolver createSdkPathResolver(String sdkSummaryPath, String sdkPath) {
   var sdk = (sdkSummaryPath != null)
       ? new SummaryBasedDartSdk(sdkSummaryPath, true)
       : _createFolderBasedDartSdk(sdkPath);
   return new DartUriResolver(sdk);
 }