Fix IE8 for-in loops using babelHelpers.sanitizeForInObject.

Upgraded meteor-babel to 0.5.4 for sanitizeForInObject support.

packages/babel-compiler/.npm/package/npm-shrinkwrap.json

@@ -1,10 +1,10 @@
 {
   "dependencies": {
     "meteor-babel": {
-      "version": "0.5.2",
+      "version": "0.5.4",
       "dependencies": {
         "babel-core": {
-          "version": "5.8.3",
+          "version": "5.8.20",
           "dependencies": {
             "babel-plugin-constant-folding": {
               "version": "1.0.1"
@@ -28,7 +28,7 @@
               "version": "1.0.1"
             },
             "babel-plugin-proto-to-assign": {
-              "version": "1.0.3"
+              "version": "1.0.4"
             },
             "babel-plugin-react-constant-elements": {
               "version": "1.0.3"
@@ -57,7 +57,7 @@
               "version": "1.1.6"
             },
             "babylon": {
-              "version": "5.8.3"
+              "version": "5.8.20"
             },
             "bluebird": {
               "version": "2.9.34"
@@ -93,7 +93,7 @@
               }
             },
             "core-js": {
-              "version": "0.9.18"
+              "version": "1.0.1"
             },
             "debug": {
               "version": "2.2.0",
@@ -166,6 +166,9 @@
             "js-tokens": {
               "version": "1.0.1"
             },
+            "json5": {
+              "version": "0.4.0"
+            },
             "line-numbers": {
               "version": "0.2.0",
               "dependencies": {
@@ -219,7 +222,7 @@
               "version": "0.1.6"
             },
             "regenerator": {
-              "version": "0.8.34",
+              "version": "0.8.35",
               "dependencies": {
                 "commoner": {
                   "version": "0.10.3",
@@ -325,16 +328,13 @@
                   }
                 },
                 "esprima-fb": {
-                  "version": "13001.1.0-dev-harmony-fb"
+                  "version": "15001.1.0-dev-harmony-fb"
                 },
                 "recast": {
-                  "version": "0.10.18",
+                  "version": "0.10.24",
                   "dependencies": {
-                    "esprima-fb": {
-                      "version": "14001.1.0-dev-harmony-fb"
-                    },
                     "ast-types": {
-                      "version": "0.8.2"
+                      "version": "0.8.5"
                     }
                   }
                 },
@@ -347,13 +347,13 @@
               "version": "1.2.0",
               "dependencies": {
                 "recast": {
-                  "version": "0.10.21",
+                  "version": "0.10.26",
                   "dependencies": {
                     "esprima-fb": {
                       "version": "15001.1.0-dev-harmony-fb"
                     },
                     "ast-types": {
-                      "version": "0.8.3"
+                      "version": "0.8.7"
                     }
                   }
                 },
@@ -416,14 +416,14 @@
                 }
               }
             },
-            "strip-json-comments": {
-              "version": "1.0.2"
-            },
             "to-fast-properties": {
               "version": "1.0.1"
             },
             "trim-right": {
               "version": "1.0.1"
+            },
+            "try-resolve": {
+              "version": "1.0.1"
             }
           }
         },

packages/babel-compiler/babel.js

@@ -11,7 +11,9 @@ function getDefaultOptions(extraFeatures) {
       // Modify options to enable async/await syntax powered by Fibers.
       meteorAsyncAwait: Match.Optional(Boolean),
       // Modify options to enable React/JSX syntax.
-      react: Match.Optional(Boolean)
+      react: Match.Optional(Boolean),
+      // Improve compatibility in older versions of Internet Explorer.
+      jscript: Match.Optional(Boolean)
     });
   }
 

packages/babel-compiler/package.js

@@ -3,11 +3,11 @@ Package.describe({
   summary: "Parser/transpiler for ECMAScript 2015+ syntax",
   // Tracks the npm version below.  Use wrap numbers to increment
   // without incrementing the npm version.
-  version: '5.8.3-plugins.0_5'
+  version: '5.8.20-plugins.0'
 });
 
 Npm.depends({
-  'meteor-babel': '0.5.2'
+  'meteor-babel': '0.5.4'
 });
 
 Package.onUse(function (api) {

packages/babel-runtime/babel-runtime.js

@@ -1,8 +1,50 @@
 var hasOwn = Object.prototype.hasOwnProperty;
 
+function canDefineNonEnumerableProperties() {
+  var testObj = {};
+  var testPropName = "t";
+
+  try {
+    Object.defineProperty(testObj, testPropName, {
+      enumerable: false,
+      value: testObj
+    });
+
+    for (var k in testObj) {
+      if (k === testPropName) {
+        return false;
+      }
+    }
+  } catch (e) {
+    return false;
+  }
+
+  return testObj[testPropName] === testObj;
+}
+
 // The name `babelHelpers` is hard-coded in Babel.  Otherwise we would make it
 // something capitalized and more descriptive, like `BabelRuntime`.
 babelHelpers = {
+  // Meteor-specific runtime helper for wrapping the object of for-in
+  // loops, so that inherited Array methods defined by es5-shim can be
+  // ignored in browsers where they cannot be defined as non-enumerable.
+  sanitizeForInObject: canDefineNonEnumerableProperties()
+    ? function (value) { return value; }
+    : function (obj) {
+      if (Array.isArray(obj)) {
+        var newObj = {};
+        var keys = Object.keys(obj);
+        var keyCount = keys.length;
+        for (var i = 0; i < keyCount; ++i) {
+          var key = keys[i];
+          newObj[key] = obj[key];
+        }
+        return newObj;
+      }
+
+      return obj;
+    },
+
   // es6.templateLiterals
   // Constructs the object passed to the tag function in a tagged
   // template literal.

packages/babel-runtime/package.js

@@ -1,7 +1,7 @@
 Package.describe({
   name: "babel-runtime",
   summary: "Runtime support for output of Babel transpiler",
-  version: '0.1.2',
+  version: '0.1.3',
   documentation: 'README.md'
 });
 

packages/ecmascript/package.js

@@ -1,6 +1,6 @@
 Package.describe({
   name: 'ecmascript',
-  version: '0.1.3-plugins.1',
+  version: '0.1.3-plugins.2',
   summary: 'Compiler plugin that supports ES2015+ in all .js files',
   documentation: 'README.md'
 });
@@ -13,7 +13,7 @@ Package.registerBuildPlugin({
 
 Package.onUse(function (api) {
   api.use('isobuild:compiler-plugin@1.0.0');
-  api.imply('babel-runtime@0.1.2');
+  api.imply('babel-runtime@0.1.3');
   api.imply('promise@0.4.1');
 });
 

packages/ecmascript/plugin.js

@@ -18,23 +18,21 @@ BCp.processFilesForTarget = function (inputFiles) {
     };
 
     if (fileOptions.transpile !== false) {
-      var babelOptions = Babel.getDefaultOptions();
+      var targetCouldBeInternetExplorer8 =
+        inputFile.getArch() === "web.browser";
+
+      var babelOptions = Babel.getDefaultOptions({
+        // Perform some additional transformations to improve
+        // compatibility in older browsers (e.g. wrapping named function
+        // expressions, per http://kiro.me/blog/nfe_dilemma.html).
+        jscript: targetCouldBeInternetExplorer8
+      });
 
       babelOptions.sourceMap = true;
       babelOptions.filename = inputFilePath;
       babelOptions.sourceFileName = "/" + inputFilePath;
       babelOptions.sourceMapName = "/" + outputFilePath + ".map";
 
-      var targetCouldBeInternetExplorer8 =
-        inputFile.getArch() === "web.browser";
-
-      if (targetCouldBeInternetExplorer8) {
-        // Perform some additional transformations to improve
-        // compatibility in older browsers (e.g. wrapping named function
-        // expressions, per http://kiro.me/blog/nfe_dilemma.html).
-        babelOptions.whitelist.push("jscript");
-      }
-
       try {
         var result = Babel.compile(source, babelOptions);
       } catch (e) {