v5.6.4

CHANGELOG.md

@@ -13,6 +13,22 @@ _Note: Gaps between patch versions are faulty/broken releases._
 
 See [CHANGELOG - 6to5](CHANGELOG-6to5.md) for the pre-4.0.0 version changelog.
 
+## 5.6.4
+
+ * **Internal**
+  * Add `ParenthesizedExpression` node type.
+
+## 5.6.3
+
+ * **Bug Fix**
+  * Fix rest parameter array allocation loop being incorrectly aliased.
+
+## 5.6.2
+
+ * **Bug Fix**
+  * Fix method key literals not turning into computed member expression in loose mode.
+  * Elect rest parameters in spread element position as candidates instead of replacing them in place.
+
 ## 5.6.0
 
  * **Bug Fix**

package.json

@@ -1,7 +1,7 @@
 {
   "name": "babel-core",
   "description": "A compiler for writing next generation JavaScript",
-  "version": "5.6.2",
+  "version": "5.6.4",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://babeljs.io/",
   "license": "MIT",

packages/babel-cli/package.json

@@ -1,14 +1,14 @@
 {
   "name": "babel",
   "description": "Turn ES6 code into readable vanilla ES5 with source maps",
-  "version": "5.6.1",
+  "version": "5.6.3",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://babeljs.io/",
   "license": "MIT",
   "repository": "babel/babel",
   "preferGlobal": true,
   "dependencies": {
-    "babel-core": "^5.6.1",
+    "babel-core": "^5.6.3",
     "chokidar": "^1.0.0",
     "commander": "^2.6.0",
     "convert-source-map": "^1.1.0",

packages/babel-runtime/package.json

@@ -1,7 +1,7 @@
 {
   "name": "babel-runtime",
   "description": "babel selfContained runtime",
-  "version": "5.6.1",
+  "version": "5.6.3",
   "license": "MIT",
   "repository": "babel/babel",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",

src/babel/generation/generators/expressions.js

@@ -24,6 +24,12 @@ export function DoExpression(node, print) {
   print.plain(node.body);
 }
 
+export function ParenthesizedExpression(node, print) {
+  this.push("(");
+  print.plain(node.expression);
+  this.push(")");
+}
+
 export function UpdateExpression(node, print) {
   if (node.prefix) {
     this.push(node.operator);

src/babel/transformation/transformers/es6/parameters.rest.js

@@ -100,7 +100,6 @@ export var visitor = {
     }
 
     // check and optimise for extremely common cases
-
     var state = {
       references: [],
       offset:     node.params.length,
@@ -135,6 +134,9 @@ export var visitor = {
       state.references = state.references.concat(state.candidates);
     }
 
+    // deopt shadowed functions as transforms like regenerator may try touch the allocation loop
+    state.deopted = state.deopted || !!node.shadow;
+
     //
 
     var start = t.literal(node.params.length);
@@ -173,13 +175,13 @@ export var visitor = {
       LEN:        len
     });
 
-    if (!state.deopted) {
+    if (state.deopted) {
+      loop._blockHoist = node.params.length + 1;
+      node.body.body.unshift(loop);
+    } else {
       // perform allocation at the lowest common denominator of all references
+      loop._blockHoist = 1;
       this.getEarliestCommonAncestorFrom(state.references).getStatementParent().insertBefore(loop);
-      return;
     }
-
-    loop._blockHoist = node.params.length + 1;
-    node.body.body.unshift(loop);
   }
 };

src/babel/traversal/path/replacement.js

@@ -92,14 +92,14 @@ export function replaceWith(replacement, whateverAllowed) {
     return;
   }
 
+  if (this.isProgram() && !t.isProgram(replacement)) {
+    throw new Error("You can only replace a Program root node with another Program node");
+  }
+
   // normalise inserting an entire AST
   if (t.isProgram(replacement) && !this.isProgram()) {
     replacement = replacement.body;
     whateverAllowed = true;
-  } else {
-    if (this.isProgram()) {
-      throw new Error("You can only replace a Program root node with another Program node");
-    }
   }
 
   if (Array.isArray(replacement)) {

src/babel/types/alias-keys.json

@@ -71,6 +71,7 @@
   "MetaProperty":              ["Expression"],
   "NewExpression":             ["Expression"],
   "ObjectExpression":          ["Expression"],
+  "ParenthesizedExpression":   ["Expression"],
   "SequenceExpression":        ["Expression"],
   "TaggedTemplateExpression":  ["Expression"],
   "ThisExpression":            ["Expression"],

src/babel/types/visitor-keys.json

@@ -46,6 +46,7 @@
   "Noop":                      [],
   "ObjectExpression":          ["properties"],
   "ObjectPattern":             ["properties", "typeAnnotation"],
+  "ParenthesizedExpression":   ["expression"],
   "Program":                   ["body"],
   "Property":                  ["key", "value", "decorators"],
   "RestElement":               ["argument", "typeAnnotation"],

test/core/fixtures/transformation/es6.parameters.rest/async-function/actual.js

@@ -0,0 +1,7 @@
+var fn = async (...rest) => rest;
+
+var fn = async (...rest) => {
+  if (true) {
+    rest;
+  }
+};

test/core/fixtures/transformation/es6.parameters.rest/async-function/expected.js

@@ -0,0 +1,39 @@
+"use strict";
+
+var _this = this;
+
+var fn = function fn() {
+  for (var _len = arguments.length, rest = Array(_len), _key = 0; _key < _len; _key++) {
+    rest[_key] = arguments[_key];
+  }
+
+  return regeneratorRuntime.async(function fn$(context$1$0) {
+    while (1) switch (context$1$0.prev = context$1$0.next) {
+      case 0:
+        return context$1$0.abrupt("return", rest);
+
+      case 1:
+      case "end":
+        return context$1$0.stop();
+    }
+  }, null, _this);
+};
+
+var fn = function fn() {
+  for (var _len2 = arguments.length, rest = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
+    rest[_key2] = arguments[_key2];
+  }
+
+  return regeneratorRuntime.async(function fn$(context$1$0) {
+    while (1) switch (context$1$0.prev = context$1$0.next) {
+      case 0:
+        if (true) {
+          rest;
+        }
+
+      case 1:
+      case "end":
+        return context$1$0.stop();
+    }
+  }, null, _this);
+};

test/core/fixtures/transformation/es6.parameters.rest/async-function/options.json

@@ -0,0 +1,3 @@
+{
+  "stage": 0
+}