fixes #168, dart:js implementation with a test

R=vsm@google.com

Review URL: https://codereview.chromium.org/1200233004.

pkg/dev_compiler/lib/runtime/_operations.js

@@ -28,7 +28,7 @@ dart_library.library('dart_runtime/_operations', null, /* Imports */[
   const slice = [].slice;
 
   function _canonicalFieldName(obj, name, args, displayName) {
-    name = classes.canonicalMember(obj, name)
+    name = classes.canonicalMember(obj, name);
     if (name) return name;
     // TODO(jmesserly): in the future we might have types that "overlay" Dart
     // methods while also exposing the full native API, e.g. dart:html vs
@@ -112,7 +112,7 @@ dart_library.library('dart_runtime/_operations', null, /* Imports */[
     if (!(f instanceof Function)) {
       // We're not a function (and hence not a method either)
       // Grab the `call` method if it's not a function.
-      if (f !== null) {
+      if (f != null) {
         ftype = classes.getMethodType(f, 'call');
         f = f.call;
       }

pkg/dev_compiler/lib/runtime/dart/_foreign_helper.js

@@ -39,12 +39,6 @@ dart_library.library('dart/_foreign_helper', null, /* Imports */[
   function JS_CALL_IN_ISOLATE(isolate, func) {
   }
   dart.fn(JS_CALL_IN_ISOLATE, dart.dynamic, [dart.dynamic, core.Function]);
-  function DART_CLOSURE_TO_JS(func) {
-  }
-  dart.fn(DART_CLOSURE_TO_JS, dart.dynamic, [core.Function]);
-  function RAW_DART_FUNCTION_REF(func) {
-  }
-  dart.fn(RAW_DART_FUNCTION_REF, dart.dynamic, [core.Function]);
   function JS_SET_CURRENT_ISOLATE(isolate) {
   }
   dart.fn(JS_SET_CURRENT_ISOLATE, dart.void, [dart.dynamic]);
@@ -132,8 +126,6 @@ dart_library.library('dart/_foreign_helper', null, /* Imports */[
   exports.JS_CURRENT_ISOLATE_CONTEXT = JS_CURRENT_ISOLATE_CONTEXT;
   exports.IsolateContext = IsolateContext;
   exports.JS_CALL_IN_ISOLATE = JS_CALL_IN_ISOLATE;
-  exports.DART_CLOSURE_TO_JS = DART_CLOSURE_TO_JS;
-  exports.RAW_DART_FUNCTION_REF = RAW_DART_FUNCTION_REF;
   exports.JS_SET_CURRENT_ISOLATE = JS_SET_CURRENT_ISOLATE;
   exports.JS_CREATE_ISOLATE = JS_CREATE_ISOLATE;
   exports.JS_DART_OBJECT_CONSTRUCTOR = JS_DART_OBJECT_CONSTRUCTOR;

pkg/dev_compiler/lib/runtime/dart/_isolate_helper.js

@@ -506,7 +506,7 @@ dart_library.library('dart/_isolate_helper', null, /* Imports */[
         return function(e) {
           f(a, e);
         };
-      }(_foreign_helper.DART_CLOSURE_TO_JS(IsolateNatives._processWorkerMessage), this.mainManager);
+      }(IsolateNatives._processWorkerMessage, this.mainManager);
       self.onmessage = func;
       self.dartPrint = self.dartPrint || function(serialize) {
         return function(object) {
@@ -516,7 +516,7 @@ dart_library.library('dart/_isolate_helper', null, /* Imports */[
             self.postMessage(serialize(object));
           }
         };
-      }(_foreign_helper.DART_CLOSURE_TO_JS(_Manager._serializePrintMessage));
+      }(_Manager._serializePrintMessage);
     }
     static _serializePrintMessage(object) {
       return _serializeMessage(dart.map({command: "print", msg: object}));
@@ -1180,14 +1180,14 @@ dart_library.library('dart/_isolate_helper', null, /* Imports */[
         return function(e) {
           return f(e, u, c);
         };
-      }(_foreign_helper.DART_CLOSURE_TO_JS(IsolateNatives.workerOnError), uri, onError);
+      }(IsolateNatives.workerOnError, uri, onError);
       worker.onerror = onerrorTrampoline;
       let processWorkerMessageTrampoline = function(f, a) {
         return function(e) {
           e.onerror = null;
           return f(a, e);
         };
-      }(_foreign_helper.DART_CLOSURE_TO_JS(IsolateNatives._processWorkerMessage), worker);
+      }(IsolateNatives._processWorkerMessage, worker);
       worker.onmessage = processWorkerMessageTrampoline;
       let o = exports._globalState;
       let workerId = o.nextManagerId;
@@ -1459,7 +1459,7 @@ dart_library.library('dart/_isolate_helper', null, /* Imports */[
         };
         dart.fn(internalCallback, dart.void, []);
         enterJsAsync();
-        this[_handle] = self.setTimeout(_js_helper.convertDartClosureToJS(internalCallback, 0), milliseconds);
+        this[_handle] = self.setTimeout(internalCallback, milliseconds);
       } else {
         dart.assert(dart.notNull(milliseconds) > 0);
         throw new core.UnsupportedError("Timer greater than 0.");
@@ -1471,9 +1471,9 @@ dart_library.library('dart/_isolate_helper', null, /* Imports */[
       this[_handle] = null;
       if (dart.notNull(hasTimer())) {
         enterJsAsync();
-        this[_handle] = self.setInterval(_js_helper.convertDartClosureToJS(dart.fn(() => {
+        this[_handle] = self.setInterval(dart.fn(() => {
           callback(this);
-        }), 0), milliseconds);
+        }), milliseconds);
       } else {
         throw new core.UnsupportedError("Periodic timer.");
       }

pkg/dev_compiler/lib/runtime/dart/_js_helper.js

@@ -1033,10 +1033,6 @@ dart_library.library('dart/_js_helper', null, /* Imports */[
     return result;
   }
   dart.fn(fillLiteralMap, dart.dynamic, [dart.dynamic, core.Map]);
-  function convertDartClosureToJS(closure, arity) {
-    return closure;
-  }
-  dart.fn(convertDartClosureToJS, dart.dynamic, [dart.dynamic, core.int]);
   function jsHasOwnProperty(jsObject, property) {
     return jsObject.hasOwnProperty(property);
   }
@@ -1187,7 +1183,6 @@ dart_library.library('dart/_js_helper', null, /* Imports */[
   exports.getTraceFromException = getTraceFromException;
   exports.objectHashCode = objectHashCode;
   exports.fillLiteralMap = fillLiteralMap;
-  exports.convertDartClosureToJS = convertDartClosureToJS;
   exports.jsHasOwnProperty = jsHasOwnProperty;
   exports.jsPropertyAccess = jsPropertyAccess;
   exports.getFallThroughError = getFallThroughError;

pkg/dev_compiler/lib/runtime/dart/async.js

@@ -4,9 +4,8 @@ dart_library.library('dart/async', null, /* Imports */[
   'dart/_internal',
   'dart/collection'
 ], /* Lazy imports */[
-  'dart/_isolate_helper',
-  'dart/_js_helper'
-], function(exports, dart, core, _internal, collection, _isolate_helper, _js_helper) {
+  'dart/_isolate_helper'
+], function(exports, dart, core, _internal, collection, _isolate_helper) {
   'use strict';
   let dartx = dart.dartx;
   function _invokeErrorHandler(errorHandler, error, stackTrace) {
@@ -2788,7 +2787,7 @@ dart_library.library('dart/async', null, /* Imports */[
         };
         dart.fn(internalCallback);
         ;
-        let observer = new self.MutationObserver(_js_helper.convertDartClosureToJS(internalCallback, 1));
+        let observer = new self.MutationObserver(internalCallback);
         observer.observe(div, {childList: true});
         return dart.fn(callback => {
           dart.assert(storedCallback == null);
@@ -2809,7 +2808,7 @@ dart_library.library('dart/async', null, /* Imports */[
       dart.fn(internalCallback);
       ;
       _isolate_helper.enterJsAsync();
-      self.scheduleImmediate(_js_helper.convertDartClosureToJS(internalCallback, 0));
+      self.scheduleImmediate(internalCallback);
     }
     static _scheduleImmediateWithSetImmediate(callback) {
       let internalCallback = () => {
@@ -2819,7 +2818,7 @@ dart_library.library('dart/async', null, /* Imports */[
       dart.fn(internalCallback);
       ;
       _isolate_helper.enterJsAsync();
-      self.setImmediate(_js_helper.convertDartClosureToJS(internalCallback, 0));
+      self.setImmediate(internalCallback);
     }
     static _scheduleImmediateWithTimer(callback) {
       Timer._createTimer(core.Duration.ZERO, callback);