rebuild

Author: goto-bus-stop

lib/object-spread/index.js

@@ -56,30 +56,46 @@ module.exports = function(acorn) {
       return nextMethod.apply(this, arguments)
     }; })
     instance.extend("checkLVal", getCheckLVal)
-    instance.extend("toAssignable", function (nextMethod) { return function(node, isBinding) {
+
+    // This backports toAssignable from 5.3.0 to 5.2.x
+    instance.extend("toAssignable", function (nextMethod) { return function(node, isBinding, refDestructuringErrors) {
       var this$1 = this;
 
       if (this.options.ecmaVersion >= 6 && node) {
         if (node.type == "ObjectExpression") {
           node.type = "ObjectPattern"
+          if (refDestructuringErrors) { this.checkPatternErrors(refDestructuringErrors, true) }
           for (var i = 0, list = node.properties; i < list.length; i += 1)
             {
             var prop = list[i];
 
-            this$1.toAssignable(prop, isBinding)
+            this$1.toAssignable(prop, isBinding, refDestructuringErrors)
           }
           return node
         } else if (node.type === "Property") {
           // AssignmentProperty has type == "Property"
           if (node.kind !== "init") { this.raise(node.key.start, "Object pattern can't contain getter or setter") }
-          return this.toAssignable(node.value, isBinding)
+          return this.toAssignable(node.value, isBinding, refDestructuringErrors)
         } else if (node.type === "SpreadElement") {
           node.type = "RestElement"
-          return this.toAssignable(node.argument, isBinding)
+          this.toAssignable(node.argument, isBinding, refDestructuringErrors)
+          if (node.argument.type === "AssignmentPattern")
+            { this.raise(node.argument.start, "Rest elements cannot have a default value") }
+          return
         }
       }
       return nextMethod.apply(this, arguments)
     }; })
+    instance.extend("toAssignableList", function (nextMethod) { return function (exprList, isBinding) {
+      var result = nextMethod.call(this, exprList, isBinding)
+      if (exprList.length && exprList[exprList.length - 1] && exprList[exprList.length - 1].type === "RestElement") {
+        // Backport check from 5.3.0
+        if (exprList[exprList.length - 1].argument.type === "AssignmentPattern")
+          { this.raise(exprList[exprList.length - 1].argument.start, "Rest elements cannot have a default value") }
+      }
+      return result
+    }; })
+
     instance.extend("checkPatternExport", function (nextMethod) { return function(exports, pat) {
       var this$1 = this;