v3.3.3

CHANGELOG.md

@@ -11,6 +11,13 @@
 
 _Note: Gaps between patch versions are faulty/broken releases._
 
+## 3.3.3
+
+ * **Bug Fix**
+  * Remap top level `this` to `undefined` instead of throwing an error.
+  * Run `selfContained` transformer over the regenerator runtime when building `6to5-runtime`.
+  * Fix `t.isReferenced` not properly allowing `value` nodes.
+
 ## 3.3.1
 
  * **Bug Fix**

lib/6to5/transformation/transformers/other/use-strict.js

@@ -16,6 +16,6 @@ exports.FunctionExpression = function (node, parent, scope, context) {
   context.skip();
 };
 
-exports.ThisExpression = function (node, parent, scope, context, file) {
-  throw file.errorWithNode(node, "Top level `this` is `undefined` in strict mode", ReferenceError);
+exports.ThisExpression = function () {
+  return t.identifier("undefined");
 };

lib/6to5/types/index.js

@@ -257,8 +257,9 @@ t.isReferenced = function (node, parent) {
   }
 
   // yes: { [NODE]: "" }
-  if (t.isProperty(parent)) {
-    return parent.key === node && parent.computed;
+  // no: { NODE: "" }
+  if (t.isProperty(parent) && parent.key === node) {
+    return parent.computed;
   }
 
   // no: var NODE = init;
@@ -407,10 +408,11 @@ t.ensureBlock = function (node, key) {
  * parsed nodes of `React.createClass` and `React["createClass"]`.
  *
  * @param {String} match Dot delimetered string
+ * @param {Boolean} [allowPartial] Allow a partial match
  * @returns {Function}
  */
 
-t.buildMatchMemberExpression = function (match) {
+t.buildMatchMemberExpression = function (match, allowPartial) {
   var parts = match.split(".");
 
   return function (member) {
@@ -445,7 +447,11 @@ t.buildMatchMemberExpression = function (match) {
 
       // too many parts
       if (++i > parts.length) {
-        return false;
+        if (allowPartial) {
+          return true;
+        } else {
+          return false;
+        }
       }
     }
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "6to5",
   "description": "Turn ES6 code into readable vanilla ES5 with source maps",
-  "version": "3.3.2",
+  "version": "3.3.3",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://6to5.org/",
   "repository": "6to5/6to5",

packages/6to5-runtime/package.json

@@ -1,7 +1,7 @@
 {
   "name": "6to5-runtime",
   "description": "6to5 selfContained runtime",
-  "version": "3.3.1",
+  "version": "3.3.2",
   "repository": "6to5/6to5",
   "author": "Sebastian McKenzie <sebmck@gmail.com>"
 }

packages/build-runtime.js

@@ -30,6 +30,12 @@ var updatePackage = function () {
   writeFile("package.json", JSON.stringify(pkg, null, 2));
 };
 
+var selfContainify = function (code) {
+  return transform(code, {
+    optional: ["selfContained"]
+  }).code;
+};
+
 var buildHelpers2 = function () {
   var body = [];
   var tree = t.program(body);
@@ -44,5 +50,5 @@ var buildHelpers2 = function () {
 writeFile("helpers.js", buildHelpers2());
 writeFile("core-js.js", readFile("core-js/library"));
 writeFile("regenerator/index.js", readFile("regenerator-6to5/runtime-module"));
-writeFile("regenerator/runtime.js", readFile("regenerator-6to5/runtime"));
+writeFile("regenerator/runtime.js", selfContainify(readFile("regenerator-6to5/runtime")));
 updatePackage();

test/fixtures/transformation/use-strict/illegal-this-arrow-function/options.json

@@ -1,3 +0,0 @@
-{
-  "throws": "Top level `this` is `undefined` in strict mode"
-}

test/fixtures/transformation/use-strict/illegal-this-root-call/options.json

@@ -1,3 +0,0 @@
-{
-  "throws": "Top level `this` is `undefined` in strict mode"
-}

test/fixtures/transformation/use-strict/illegal-this-root-declaration/options.json

@@ -1,3 +0,0 @@
-{
-  "throws": "Top level `this` is `undefined` in strict mode"
-}

test/fixtures/transformation/use-strict/illegal-this-root-reference/options.json

@@ -1,3 +0,0 @@
-{
-  "throws": "Top level `this` is `undefined` in strict mode"
-}

test/fixtures/transformation/use-strict/undefined-this-arrow-function/expected.js

@@ -0,0 +1,5 @@
+"use strict";
+
+var foo = function () {
+  return undefined;
+};

test/fixtures/transformation/use-strict/undefined-this-root-call/expected.js

@@ -0,0 +1,3 @@
+"use strict";
+
+undefined.foo();

test/fixtures/transformation/use-strict/undefined-this-root-declaration/expected.js

@@ -0,0 +1,3 @@
+"use strict";
+
+var self = undefined;

test/fixtures/transformation/use-strict/undefined-this-root-reference/expected.js

@@ -0,0 +1,3 @@
+"use strict";
+
+undefined;