v5.5.3

CHANGELOG.md

@@ -13,6 +13,19 @@ _Note: Gaps between patch versions are faulty/broken releases._
 
 See [CHANGELOG - 6to5](CHANGELOG-6to5.md) for the pre-4.0.0 version changelog.
 
+## 5.5.3
+
+ * **Bug Fix**
+  * Fix weird state bug when traversing overa  `node` `ClassProperty` instead of `path` in the `es6.classes` transformer.
+
+## 5.5.2
+
+ * **Bug Fix**
+  * Fix `NodePath#isPure` on `Property` nodes.
+  * Use cwd instead of entry file directory when working out relative directory for `babel/register`.
+ * **Internal**
+  * Add scary warning for those few who choose to use the WIP experimental transformers.
+
 ## 5.5.1
 
  * **Bug Fix**

package.json

@@ -1,7 +1,7 @@
 {
   "name": "babel-core",
   "description": "A compiler for writing next generation JavaScript",
-  "version": "5.5.1",
+  "version": "5.5.3",
   "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": "5.5.0",
+  "version": "5.5.2",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://babeljs.io/",
   "license": "MIT",
   "repository": "babel/babel",
   "preferGlobal": true,
   "dependencies": {
-    "babel-core": "^5.5.0",
+    "babel-core": "^5.5.2",
     "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": "5.5.0",
+  "version": "5.5.2",
   "license": "MIT",
   "repository": "babel/babel",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",

src/babel/api/register/node.js

@@ -38,7 +38,7 @@ var only;
 var oldHandlers   = {};
 var maps          = {};
 
-var cwd = require.main ? require.main.filename : process.cwd();
+var cwd = process.cwd();
 
 var getRelativePath = function (filename){
   return path.relative(cwd, filename);

src/babel/transformation/file/logger.js

@@ -16,6 +16,10 @@ export default class Logger {
     return parts;
   }
 
+  warn(msg) {
+    console.warn(this._buildMessage(msg));
+  }
+
   error(msg: string, Constructor = Error) {
     throw new Constructor(this._buildMessage(msg));
   }

src/babel/transformation/file/options.json

@@ -47,7 +47,8 @@
   },
 
   "experimental": {
-    "deprecated": "use `--stage 0`/`{ stage: 0 }` instead"
+    "description": "allow use of experimental transformers",
+    "default": false
   },
 
   "highlightCode": {

src/babel/transformation/transformer-pass.js

@@ -13,6 +13,12 @@ export default class TransformerPass {
     this.handlers    = transformer.handlers;
     this.file        = file;
     this.key         = transformer.key;
+
+    if (this.canTransform() && transformer.metadata.experimental && !file.opts.experimental) {
+      file.log.warn(`THE TRANSFORMER ${this.key} HAS BEEN MARKED AS EXPERIMENTAL AND IS WIP. USE AT YOUR OWN RISK. ` +
+                    "THIS WILL HIGHLY LIKELY BREAK YOUR CODE SO USE WITH **EXTREME** CAUTION. ENABLE THE " +
+                    "`experimental` OPTION TO IGNORE THIS WARNING.");
+    }
   }
 
   canTransform(): boolean {

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

@@ -293,7 +293,7 @@ class ClassTransformer {
           this.pushMethod(node, path);
         }
       } else if (t.isClassProperty(node)) {
-        this.pushProperty(node);
+        this.pushProperty(node, path);
       }
     }
 
@@ -478,8 +478,8 @@ class ClassTransformer {
    * Description
    */
 
-  pushProperty(node: { type: "ClassProperty" }) {
-    this.scope.traverse(node, collectPropertyReferencesVisitor, {
+  pushProperty(node: { type: "ClassProperty" }, path: NodePath) {
+    path.traverse(collectPropertyReferencesVisitor, {
       references: this.instancePropRefs,
       scope:      this.scope
     });

src/babel/transformation/transformers/minification/constant-folding.js

@@ -2,7 +2,8 @@ import * as t from "../../../types";
 
 export var metadata = {
   optional: true,
-  group: "builtin-prepass"
+  group: "builtin-prepass",
+  experimental: true
 };
 
 export function AssignmentExpression() {

src/babel/transformation/transformers/minification/dead-code-elimination.js

@@ -19,7 +19,8 @@ function toStatements(node) {
 
 export var metadata = {
   optional: true,
-  group: "builtin-pre"
+  group: "builtin-pre",
+  experimental: true
 };
 
 export function ReferencedIdentifier(node, parent, scope) {

src/babel/traversal/path/resolution.js

@@ -190,6 +190,10 @@ export function _inferTypeAnnotation(force?: boolean): ?Object {
     return t.genericTypeAnnotation(t.identifier("Function"));
   }
 
+  if (path.isTemplateLiteral()) {
+    return t.stringTypeAnnotation();
+  }
+
   if (path.isUnaryExpression()) {
     let operator = node.operator;
 
@@ -273,8 +277,11 @@ export function _inferTypeAnnotation(force?: boolean): ?Object {
     if (node.regex) return t.genericTypeAnnotation(t.identifier("RegExp"));
   }
 
-  if (path.isCallExpression()) {
-    var callee = path.get("callee").resolve();
+  var callPath;
+  if (path.isCallExpression()) callPath = path.get("callee");
+  if (path.isTaggedTemplateExpression()) callPath = path.get("tag");
+  if (callPath) {
+    var callee = callPath.resolve();
     // todo: read typescript/flow interfaces
     if (callee.isNodeType("Function")) return callee.node.returnType;
   }

src/babel/traversal/scope/index.js

@@ -585,8 +585,8 @@ export default class Scope {
       }
       return true;
     } else if (t.isProperty(node)) {
-      if (node.computed && !t.isPure(node.key, constantsOnly)) return false;
-      return t.isPure(node.value, constantsOnly);
+      if (node.computed && !this.isPure(node.key, constantsOnly)) return false;
+      return this.isPure(node.value, constantsOnly);
     } else {
       return t.isPure(node);
     }

test/core/fixtures/transformation/minification.dead-code-elimination/completion-statements/actual.js

@@ -0,0 +1,13 @@
+for (var key in foo) {
+  break;
+  foo();
+}
+
+function bar() {
+  yes();
+  bar();
+  return "wow";
+  nomore();
+}
+
+bar();

test/core/fixtures/transformation/minification.dead-code-elimination/completion-statements/expected.js

@@ -0,0 +1,13 @@
+"use strict";
+
+for (var key in foo) {
+  break;
+}
+
+function bar() {
+  yes();
+  bar();
+  return "wow";
+}
+
+bar();

test/core/fixtures/transformation/minification.dead-code-elimination/options.json

@@ -1,4 +1,5 @@
 {
+  "experimental": true,
   "externalHelpers": true,
   "noCheckAst": true,
   "blacklist": ["regenerator"],