move react children coercion to opening element visitor - fixes #1276

src/babel/transformation/helpers/build-react-transformer.js

@@ -57,6 +57,8 @@ export default function (exports, opts) {
 
   exports.JSXOpeningElement = {
     exit(node, parent, scope, file) {
+      parent.children = react.buildChildren(parent);
+
       var tagExpr = node.name;
       var args = [];
 
@@ -144,10 +146,6 @@ export default function (exports, opts) {
   };
 
   exports.JSXElement = {
-    enter(node) {
-      node.children = react.buildChildren(node);
-    },
-
     exit(node) {
       var callExpr = node.openingElement;
 

src/babel/transformation/helpers/react.js

@@ -34,9 +34,8 @@ function cleanJSXElementLiteralChild(child, args) {
   var lines = child.value.split(/\r\n|\n|\r/);
 
   var lastNonEmptyLine = 0;
-  var i;
 
-  for (i = 0; i < lines.length; i++) {
+  for (let i = 0; i < lines.length; i++) {
     if (lines[i].match(/[^ \t]/)) {
       lastNonEmptyLine = i;
     }
@@ -44,7 +43,7 @@ function cleanJSXElementLiteralChild(child, args) {
 
   var str = "";
 
-  for (i = 0; i < lines.length; i++) {
+  for (let i = 0; i < lines.length; i++) {
     var line = lines[i];
 
     var isFirstLine = i === 0;