fixes #40, extension methods for primitive types

lib/runtime/dart/isolate.js

 var isolate = dart.defineLibrary(isolate, {});
 var core = dart.import(core);
 var _isolate_helper = dart.lazyImport(_isolate_helper);
 var async = dart.import(async);
 (function(exports, core, _isolate_helper, async) {
   'use strict';
   class Capability extends core.Object {
     static new() {
       return new _isolate_helper.CapabilityImpl();
     }
@@ skipping 35 matching lines @@
       }
 
     }
     static spawnUri(uri, args, message, opts) {
       let paused = opts && 'paused' in opts ? opts.paused : false;
       let packageRoot = opts && 'packageRoot' in opts ? opts.packageRoot : null;
       if (packageRoot != null)
         throw new core.UnimplementedError("packageRoot");
       try {
         if (dart.is(args, core.List)) {
-          for (let i = 0; dart.notNull(i) < dart.notNull(args[core.$length]); i = dart.notNull(i) + 1) {
-            if (!(typeof args[core.$get](i) == 'string')) {
+          for (let i = 0; dart.notNull(i) < dart.notNull(args.length); i = dart.notNull(i) + 1) {
+            if (!(typeof args[dartx.get](i) == 'string')) {
               throw new core.ArgumentError(`Args must be a list of Strings ${args}`);
             }
           }
         } else if (args != null) {
           throw new core.ArgumentError(`Args must be a list of Strings ${args}`);
         }
         return dart.as(_isolate_helper.IsolateNatives.spawnUri(uri, args, message, paused).then(dart.fn(msg => new Isolate(dart.as(dart.dindex(msg, 1), SendPort), {pauseCapability: dart.as(dart.dindex(msg, 2), Capability), terminateCapability: dart.as(dart.dindex(msg, 3), Capability)}), Isolate, [core.Object])), async.Future$(Isolate));
       } catch (e) {
         let st = dart.stackTrace(e);
         return async.Future$(Isolate).error(e, st);
       }
 
     }
     pause(resumeCapability) {
       if (resumeCapability === void 0)
         resumeCapability = null;
       if (resumeCapability == null)
         resumeCapability = Capability.new();
       this[_pause](resumeCapability);
       return resumeCapability;
     }
     [_pause](resumeCapability) {
       let message = core.List.new(3);
-      message[core.$set](0, "pause");
-      message[core.$set](1, this.pauseCapability);
-      message[core.$set](2, resumeCapability);
+      message[dartx.set](0, "pause");
+      message[dartx.set](1, this.pauseCapability);
+      message[dartx.set](2, resumeCapability);
       this.controlPort.send(message);
     }
     resume(resumeCapability) {
       let message = core.List.new(2);
-      message[core.$set](0, "resume");
-      message[core.$set](1, resumeCapability);
+      message[dartx.set](0, "resume");
+      message[dartx.set](1, resumeCapability);
       this.controlPort.send(message);
     }
     addOnExitListener(responsePort) {
       let message = core.List.new(2);
-      message[core.$set](0, "add-ondone");
-      message[core.$set](1, responsePort);
+      message[dartx.set](0, "add-ondone");
+      message[dartx.set](1, responsePort);
       this.controlPort.send(message);
     }
     removeOnExitListener(responsePort) {
       let message = core.List.new(2);
-      message[core.$set](0, "remove-ondone");
-      message[core.$set](1, responsePort);
+      message[dartx.set](0, "remove-ondone");
+      message[dartx.set](1, responsePort);
       this.controlPort.send(message);
     }
     setErrorsFatal(errorsAreFatal) {
       let message = core.List.new(3);
-      message[core.$set](0, "set-errors-fatal");
-      message[core.$set](1, this.terminateCapability);
-      message[core.$set](2, errorsAreFatal);
+      message[dartx.set](0, "set-errors-fatal");
+      message[dartx.set](1, this.terminateCapability);
+      message[dartx.set](2, errorsAreFatal);
       this.controlPort.send(message);
     }
     kill(priority) {
       if (priority === void 0)
         priority = Isolate.BEFORE_NEXT_EVENT;
       this.controlPort.send(["kill", this.terminateCapability, priority]);
     }
     ping(responsePort, pingType) {
       if (pingType === void 0)
         pingType = Isolate.IMMEDIATE;
       let message = core.List.new(3);
-      message[core.$set](0, "ping");
-      message[core.$set](1, responsePort);
-      message[core.$set](2, pingType);
+      message[dartx.set](0, "ping");
+      message[dartx.set](1, responsePort);
+      message[dartx.set](2, pingType);
       this.controlPort.send(message);
     }
     addErrorListener(port) {
       let message = core.List.new(2);
-      message[core.$set](0, "getErrors");
-      message[core.$set](1, port);
+      message[dartx.set](0, "getErrors");
+      message[dartx.set](1, port);
       this.controlPort.send(message);
     }
     removeErrorListener(port) {
       let message = core.List.new(2);
-      message[core.$set](0, "stopErrors");
-      message[core.$set](1, port);
+      message[dartx.set](0, "stopErrors");
+      message[dartx.set](1, port);
       this.controlPort.send(message);
     }
     get errors() {
       let controller = null;
       let port = null;
       let handleError = message => {
         let errorDescription = dart.as(dart.dindex(message, 0), core.String);
         let stackDescription = dart.as(dart.dindex(message, 1), core.String);
         let error = new RemoteError(errorDescription, stackDescription);
         controller.addError(error, error.stackTrace);
@@ skipping 65 matching lines @@
   dart.setSignature(RawReceivePort, {
     constructors: () => ({new: [RawReceivePort, [], [dart.functionType(dart.void, [dart.bottom])]]})
   });
   class _IsolateUnhandledException extends core.Object {
     _IsolateUnhandledException(message, source, stackTrace) {
       this.message = message;
       this.source = source;
       this.stackTrace = stackTrace;
     }
     toString() {
-      return 'IsolateUnhandledException: exception while handling message: ' + `${this.message} \n  ` + `${dart.toString(this.source).replaceAll("\n", "\n  ")}\n` + 'original stack trace:\n  ' + `${dart.toString(this.stackTrace).replaceAll("\n", "\n  ")}`;
+      return 'IsolateUnhandledException: exception while handling message: ' + `${this.message} \n  ` + `${dart.toString(this.source)[dartx.replaceAll]("\n", "\n  ")}\n` + 'original stack trace:\n  ' + `${dart.toString(this.stackTrace)[dartx.replaceAll]("\n", "\n  ")}`;
     }
   }
   _IsolateUnhandledException[dart.implements] = () => [core.Exception];
   dart.setSignature(_IsolateUnhandledException, {
     constructors: () => ({_IsolateUnhandledException: [_IsolateUnhandledException, [core.Object, core.Object, core.StackTrace]]})
   });
   let _description = Symbol('_description');
   class RemoteError extends core.Object {
     RemoteError(description, stackDescription) {
       this[_description] = description;
@@ skipping 22 matching lines @@
   });
   // Exports:
   exports.Capability = Capability;
   exports.IsolateSpawnException = IsolateSpawnException;
   exports.Isolate = Isolate;
   exports.SendPort = SendPort;
   exports.ReceivePort = ReceivePort;
   exports.RawReceivePort = RawReceivePort;
   exports.RemoteError = RemoteError;
 })(isolate, core, _isolate_helper, async);