v5.1.9

This reverts commit dd84b554e6.

CHANGELOG.md

@@ -13,6 +13,41 @@ _Note: Gaps between patch versions are faulty/broken releases._
 
 See [CHANGELOG - 6to5](CHANGELOG-6to5.md) for the pre-4.0.0 version changelog.
 
+## 5.1.9
+
+ * **Bug Fix**
+  * Fix class property initializers with `undefined` values not being correctly writable.
+  * Fix self inferring generators incorrectly causing a stack error.
+ * **Internal**
+  * Upgrade to latest `acorn`.
+ * **Polish**
+  * Make invalid LHS pattern error messages nicer.
+
+## 5.1.8
+
+ * **Bug Fix**
+  * Only make parenthesized object pattern LHS illegal.
+
+## 5.1.7
+
+ * **Internal**
+  * Add `parse` node API.
+
+## 5.1.6
+
+ * **Bug Fix**
+  * Fix `runtime` built-in catchall not properly checking for local variables.
+
+## 5.1.5
+
+ * **Internal**
+  * Bump `core-js` version.
+
+## 5.1.4
+
+ * **Polish**
+  * Add missing `Reflect` methods to runtime transformer.
+
 ## 5.1.3
 
  * **Internal**

package.json

@@ -1,7 +1,7 @@
 {
   "name": "babel-core",
   "description": "Turn ES6 code into readable vanilla ES5 with source maps",
-  "version": "5.1.3",
+  "version": "5.1.9",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://babeljs.io/",
   "repository": "babel/babel",
@@ -30,7 +30,7 @@
     "ast-types": "~0.7.0",
     "chalk": "^1.0.0",
     "convert-source-map": "^1.0.0",
-    "core-js": "^0.8.1",
+    "core-js": "^0.8.3",
     "debug": "^2.1.1",
     "detect-indent": "^3.0.0",
     "estraverse": "^3.0.0",

packages/babel-cli/package.json

@@ -1,13 +1,13 @@
 {
   "name": "babel",
   "description": "Turn ES6 code into readable vanilla ES5 with source maps",
-  "version": "5.1.2",
+  "version": "5.1.8",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://babeljs.io/",
   "repository": "babel/babel",
   "preferGlobal": true,
   "dependencies": {
-    "babel-core": "^5.1.2",
+    "babel-core": "^5.1.8",
     "chokidar": "^1.0.0",
     "commander": "^2.6.0",
     "fs-readdir-recursive": "^0.1.0",

packages/babel-runtime/package.json

@@ -1,7 +1,7 @@
 {
   "name": "babel-runtime",
   "description": "babel selfContained runtime",
-  "version": "5.1.2",
+  "version": "5.1.8",
   "repository": "babel/babel",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "dependencies": {

src/acorn/src/expression.js

@@ -104,10 +104,14 @@ pp.parseMaybeAssign = function(noIn, refShorthandDefaultPos, afterLeftParse) {
     refShorthandDefaultPos.start = 0 // reset because shorthand default was used correctly
     this.checkLVal(left)
     if (left.parenthesizedExpression) {
+      let errorMsg
       if (left.type === "ObjectPattern") {
-        this.raise(left.start, "You're trying to assign to a parenthesized expression, instead of `({ foo }) = {}` use `({ foo } = {})`");
-      } else {
-        this.raise(left.start, "Parenthesized left hand expressions are illegal");
+        errorMsg = "`({a}) = 0` use `({a} = 0)`"
+      } else if (left.type === "ArrayPattern") {
+        errorMsg = "`([a]) = 0` use `([a] = 0)`"
+      }
+      if (errorMsg) {
+        this.raise(left.start, `You're trying to assign to a parenthesized expression, eg. instead of ${errorMsg}`)
       }
     }
     this.next()

src/acorn/src/statement.js

@@ -691,7 +691,6 @@ pp.parseImport = function(node) {
   if (this.type === tt.string) {
     node.specifiers = empty
     node.source = this.parseExprAtom()
-    node.kind = ""
   } else {
     node.specifiers = []
     this.parseImportSpecifiers(node)

src/acorn/src/tokentype.js

@@ -116,7 +116,7 @@ kw("do", {isLoop: true})
 kw("else", beforeExpr)
 kw("finally")
 kw("for", {isLoop: true})
-kw("function")
+kw("function", startsExpr)
 kw("if")
 kw("return", beforeExpr)
 kw("switch")

src/babel/api/node.js

@@ -4,12 +4,11 @@ import * as acorn from "../../acorn";
 import * as util from "../util";
 import fs from "fs";
 
-export { util, acorn };
+export { util, acorn, transform };
 export { canCompile } from "../util";
 
 export { default as options } from "../transformation/file/options";
 export { default as Transformer } from "../transformation/transformer";
-export { default as transform } from "../transformation";
 export { default as traverse } from "../traversal";
 export { default as buildExternalHelpers } from "../tools/build-external-helpers";
 export { version } from "../../../package";
@@ -54,3 +53,19 @@ export function transformFileSync(filename: string, opts?: Object = {}) {
   opts.filename = filename;
   return transform(fs.readFileSync(filename), opts);
 }
+
+export function parse(code, opts = {}) {
+  opts.sourceType = "module";
+  opts.ecmaVersion = Infinity;
+  opts.plugins = {
+    flow: true,
+    jsx:  true
+  };
+  opts.features = {};
+
+  for (var key in transform.transformers) {
+    opts.features[key] = true;
+  }
+
+  return acorn.parse(code, opts);
+}

src/babel/tools/resolve-rc.js

@@ -44,11 +44,10 @@ export default function (loc, opts = {}) {
       find(up, rel);
     }
   }
-  
+
   if (opts.breakConfig !== true) {
     find(loc, rel);
   }
-  
 
   return opts;
 };

src/babel/transformation/modules/_default.js

@@ -49,11 +49,12 @@ var remapVisitor = {
     if (node._skipModulesRemap) {
       return this.skip();
     }
+  },
 
+  exit(node, parent, scope, formatter) {
     if (t.isAssignmentExpression(node) && !node._ignoreModulesRemap) {
       var exported = formatter.getExport(node.left, scope);
       if (exported) {
-        this.skip();
         return formatter.remapExportAssignment(node, exported);
       }
     }

src/babel/transformation/modules/amd.js

@@ -105,6 +105,7 @@ export default class AMDFormatter extends DefaultFormatter {
 
   exportSpecifier(specifier, node, nodes) {
     if (this.doDefaultExportInterop(specifier)) {
+      this.passModuleArg = true;
       nodes.push(util.template("exports-default-assign", {
         VALUE: specifier.local
       }, true));

src/babel/transformation/templates/property-method-assignment-wrapper-generator.js

@@ -1,6 +1,6 @@
 (function (FUNCTION_KEY) {
   function* FUNCTION_ID() {
-    return yield* FUNCTION_ID.apply(this, arguments);
+    return yield* FUNCTION_KEY.apply(this, arguments);
   }
 
   FUNCTION_ID.toString = function () {

src/babel/transformation/transformers/es6/block-scoping.js

@@ -465,14 +465,14 @@ class BlockScoping {
     var declar;
 
     //
-    for (var i = 0; i < declarators.length; i++) {
+    for (let i = 0; i < declarators.length; i++) {
       declar = declarators[i];
       extend(this.outsideLetReferences, t.getBindingIdentifiers(declar));
     }
 
     //
     if (block.body) {
-      for (i = 0; i < block.body.length; i++) {
+      for (let i = 0; i < block.body.length; i++) {
         declar = block.body[i];
         if (isLet(declar, block)) {
           declarators = declarators.concat(declar.declarations);
@@ -481,7 +481,7 @@ class BlockScoping {
     }
 
     //
-    for (i = 0; i < declarators.length; i++) {
+    for (let i = 0; i < declarators.length; i++) {
       declar = declarators[i];
       var keys = t.getBindingIdentifiers(declar);
       extend(this.letReferences, keys);

src/babel/transformation/transformers/es6/classes.js

@@ -552,6 +552,11 @@ class ClassTransformer {
         this.instancePropBody.push(t.expressionStatement(
           t.assignmentExpression("=", t.memberExpression(t.thisExpression(), node.key), node.value)
         ));
+
+        node.value = null;
+      }
+
+      if (!node.value) {
         node.value = t.identifier("undefined");
       }
 

src/babel/transformation/transformers/optimisation/react.constant-elements.js

@@ -29,14 +29,13 @@ var immutabilityVisitor = {
 };
 
 export function JSXElement(node, parent, scope, file) {
-  if (node._ignoreConstant) return;
+  if (node._hoisted) return;
 
   var state = { isImmutable: true };
   this.traverse(immutabilityVisitor, state);
   this.skip();
 
-  if (state.isImmutable) {
-    this.hoist();
-    node._ignoreConstant = true;
-  }
+  if (state.isImmutable) this.hoist();
+
+  node._hoisted = true;
 }

src/babel/transformation/transformers/other/runtime/definitions.json

@@ -41,6 +41,7 @@
       "unshift": "array/unshift",
       "values": "array/values"
     },
+
     "Object": {
       "assign": "object/assign",
       "classof": "object/classof",
@@ -65,13 +66,16 @@
       "setPrototypeOf": "object/set-prototype-of",
       "values": "object/values"
     },
+
     "RegExp": {
       "escape": "regexp/escape"
     },
+
     "Function": {
       "only": "function/only",
       "part": "function/part"
     },
+
     "Math": {
       "acosh": "math/acosh",
       "asinh": "math/asinh",
@@ -92,11 +96,13 @@
       "tanh": "math/tanh",
       "trunc": "math/trunc"
     },
+
     "Date": {
       "addLocale": "date/add-locale",
       "formatUTC": "date/format-utc",
       "format": "date/format"
     },
+
     "Symbol": {
       "for": "symbol/for",
       "hasInstance": "symbol/for-instance",
@@ -112,6 +118,7 @@
       "toStringTag": "symbol/to-string-tag",
       "unscopables": "symbol/unscopables"
     },
+
     "String": {
       "at": "string/at",
       "codePointAt": "string/code-point-at",
@@ -124,8 +131,9 @@
       "startsWith": "string/starts-with",
       "unescapeHTML": "string/unescape-html"
     },
+
     "Number": {
-      "epsilon": "number/epsilon",
+      "EPSILON": "number/epsilon",
       "isFinite": "number/is-finite",
       "isInteger": "number/is-integer",
       "isNaN": "number/is-nan",
@@ -135,6 +143,23 @@
       "parseFloat": "number/parse-float",
       "parseInt": "number/parse-int",
       "random": "number/random"
+    },
+
+    "Reflect": {
+      "apply": "reflect/apply",
+      "construct": "reflect/construct",
+      "defineProperty": "reflect/define-property",
+      "deleteProperty": "reflect/delete-property",
+      "enumerate": "reflect/enumerate",
+      "getOwnPropertyDescriptor": "reflect/get-own-property-descriptor",
+      "getPrototypeOf": "reflect/get-prototype-of",
+      "get": "reflect/get",
+      "has": "reflect/has",
+      "isExtensible": "reflect/is-extensible",
+      "ownKeys": "reflect/own-keys",
+      "preventExtensions": "reflect/prevent-extensions",
+      "setPrototypeOf": "reflect/set-prototype-of",
+      "set": "reflect/set"
     }
   }
 }

src/babel/transformation/transformers/other/runtime/index.js

@@ -81,6 +81,7 @@ var astVisitor = traverse.explode({
       var obj  = node.object;
 
       if (!has(definitions.builtins, obj.name)) return;
+      if (scope.getBindingIdentifier(obj.name)) return;
 
       var modulePath = definitions.builtins[obj.name];
       return t.memberExpression(

src/babel/traversal/path/hoister.js

@@ -19,7 +19,6 @@ var referenceVisitor = {
         if (bindingInfo && bindingInfo.constant) {
           state.bindings[node.name] = bindingInfo;
         } else {
-          scope.dump();
           state.foundIncompatible = true;
           this.stop();
         }
@@ -90,6 +89,10 @@ export default class PathHoister {
   }
 
   run() {
+    var node = this.path.node;
+    if (node._hoisted) return;
+    this.path._hoisted = true;
+
     this.path.traverse(referenceVisitor, this);
     if (this.foundIncompatible) return;
 

src/babel/types/index.js

@@ -25,7 +25,7 @@ function registerType(type: string, skipAliasCheck?: boolean) {
 }
 
 export var STATEMENT_OR_BLOCK_KEYS = ["consequent", "body", "alternate"];
-export var NATIVE_TYPE_NAMES       = ["Array", "Object", "Number", "Boolean", "Date", "Array", "String", "Promise", "Set", "Map", "WeakMap", "WeakSet", "Uint16Array", "ArrayBuffer", "DataView", "Int8Array", "Uint8Array", "Uint8ClampedArray", "Uint32Array", "Int32Array", "Float32Array", "Int16Array", "Float64Array"];
+export var NATIVE_TYPE_NAMES       = ["Array", "ArrayBuffer", "Boolean", "DataView", "Date", "Error", "EvalError", "Float32Array", "Float64Array", "Function", "Int8Array", "Int16Array", "Int32Array", "Map", "Number", "Object", "Proxy", "Promise", "RangeError", "ReferenceError", "RegExp", "Set", "String", "Symbol", "SyntaxError", "TypeError", "Uint8Array", "Uint8ClampedArray", "Uint16Array", "Uint32Array", "URIError", "WeakMap", "WeakSet"];
 export var FLATTENABLE_KEYS        = ["body", "expressions"];
 export var FOR_INIT_KEYS           = ["left", "init"];
 export var COMMENT_KEYS            = ["leadingComments", "trailingComments"];

test/acorn/tests-babel.js

@@ -2,6 +2,14 @@ var test = require("./driver.js").test;
 var testFail = require("./driver.js").testFail;
 var testAssert = require("./driver.js").testAssert;
 
+testFail("({a}) = 2;", "You're trying to assign to a parenthesized expression, eg. instead of `({a}) = 0` use `({a} = 0)` (1:1)", {
+  ecmaVersion: 6
+});
+
+testFail("([a]) = 2;", "You're trying to assign to a parenthesized expression, eg. instead of `([a]) = 0` use `([a] = 0)` (1:1)", {
+  ecmaVersion: 6
+});
+
 // ES7: Exponentiation Operator
 
 test('a **= 2;', {

test/core/fixtures/transformation/es6.modules-amd/export-specifier-default/actual.js

@@ -0,0 +1,2 @@
+var a = 1;
+export { a as default };

test/core/fixtures/transformation/es6.modules-amd/export-specifier-default/expected.js

@@ -0,0 +1,6 @@
+define(["exports", "module"], function (exports, module) {
+  "use strict";
+
+  var a = 1;
+  module.exports = a;
+});

test/core/fixtures/transformation/es7.class-properties/instance-undefined/actual.js

@@ -0,0 +1,3 @@
+class Foo {
+  bar;
+}

test/core/fixtures/transformation/es7.class-properties/instance-undefined/expected.js

@@ -0,0 +1,14 @@
+"use strict";
+
+var Foo = (function () {
+  function Foo() {
+    babelHelpers.classCallCheck(this, Foo);
+  }
+
+  babelHelpers.createClass(Foo, [{
+    key: "bar",
+    value: undefined,
+    enumerable: true
+  }]);
+  return Foo;
+})();

test/core/fixtures/transformation/es7.class-properties/static-undefined/actual.js

@@ -0,0 +1,3 @@
+class Foo {
+  static bar;
+}

test/core/fixtures/transformation/es7.class-properties/static-undefined/exec.js

@@ -0,0 +1,6 @@
+class Foo {
+  static num;
+}
+
+assert.equal("num" in Foo, true);
+assert.equal(Foo.num, undefined);

test/core/fixtures/transformation/es7.class-properties/static-undefined/expected.js

@@ -0,0 +1,14 @@
+"use strict";
+
+var Foo = (function () {
+  function Foo() {
+    babelHelpers.classCallCheck(this, Foo);
+  }
+
+  babelHelpers.createClass(Foo, null, [{
+    key: "bar",
+    value: undefined,
+    enumerable: true
+  }]);
+  return Foo;
+})();