Store the async-await compiled pub code directly in the repo.

sdk/lib/_internal/pub_generated/lib/src/command/run.dart

+library pub.command.run;
+import 'dart:async';
+import 'package:path/path.dart' as p;
+import '../command.dart';
+import '../executable.dart';
+import '../io.dart';
+import '../utils.dart';
+class RunCommand extends PubCommand {
+  bool get takesArguments => true;
+  bool get allowTrailingOptions => false;
+  String get description =>
+      "Run an executable from a package.\n"
+          "NOTE: We are currently optimizing this command's startup time.";
+  String get usage => "pub run <executable> [args...]";
+  Future onRun() {
+    final completer0 = new Completer();
+    scheduleMicrotask(() {
+      try {
+        join0() {
+          var package = entrypoint.root.name;
+          var executable = commandOptions.rest[0];
+          var args = commandOptions.rest.skip(1).toList();
+          join1() {
+            runExecutable(entrypoint, package, executable, args).then((x0) {
+              try {
+                var exitCode = x0;
+                flushThenExit(exitCode).then((x1) {
+                  try {
+                    x1;
+                    completer0.complete(null);
+                  } catch (e1) {
+                    completer0.completeError(e1);
+                  }
+                }, onError: (e2) {
+                  completer0.completeError(e2);
+                });
+              } catch (e0) {
+                completer0.completeError(e0);
+              }
+            }, onError: (e3) {
+              completer0.completeError(e3);
+            });
+          }
+          if (executable.contains(":")) {
+            var components = split1(executable, ":");
+            package = components[0];
+            executable = components[1];
+            join2() {
+              join1();
+            }
+            if (p.split(executable).length > 1) {
+              usageError(
+                  "Cannot run an executable in a subdirectory of a " + "dependency.");
+              join2();
+            } else {
+              join2();
+            }
+          } else {
+            join1();
+          }
+        }
+        if (commandOptions.rest.isEmpty) {
+          usageError("Must specify an executable to run.");
+          join0();
+        } else {
+          join0();
+        }
+      } catch (e4) {
+        completer0.completeError(e4);
+      }
+    });
+    return completer0.future;
+  }
+}