Fix text interpolation, Fixes #8

package.json

@@ -1,7 +1,7 @@
 {
   "name": "babel-plugin-jsx-dom-expressions",
   "description": "A JSX to DOM plugin that wraps expressions for fine grained change detection",
-  "version": "0.7.3",
+  "version": "0.7.4",
   "author": "Ryan Carniato",
   "license": "MIT",
   "repository": {

src/index.js

@@ -98,13 +98,7 @@ export default (babel) => {
   }
 
   function trimWhitespace(text) {
-    return text.split('\n').map((t, i) => {
-      if (/^\s*$/.test(t)) return '';
-      if (i === 0) return t.replace(/\s+/g, ' ');
-      return t
-        .replace(/^\s+/g, '')
-        .replace(/\s+/g, ' ');
-    }).join('');
+    return text.replace(/\n\s*/g, '').replace(/\s+/g, ' ');
   }
 
   function checkLength(children) {
@@ -337,8 +331,9 @@ export default (babel) => {
       transformChildren(path, jsx, opts, results);
       return results;
     } else if (t.isJSXText(jsx)) {
-      if (/^\s*$/.test(jsx.value)) return null;
-      let results = { template: trimWhitespace(jsx.value), decl: [], exprs: [] };
+      const text = trimWhitespace(jsx.value);
+      if (!text.length) return null;
+      const results = { template: text, decl: [], exprs: [] };
       if (!info.skipId) results.id = path.scope.generateUidIdentifier("el$")
       return results;
     } else if (t.isJSXExpressionContainer(jsx)) {

test/__fixtures__/textInterpolation/code.js

@@ -0,0 +1,23 @@
+const name = 'Jake',
+  greeting = 'Welcome';
+
+const trailing = <span>Hello </span>;
+const leading = <span> John</span>;
+const extraSpaces = <span>Hello   John</span>;
+
+const trailingExpr = <span>Hello {name}</span>;
+const leadingExpr = <span>{greeting} John</span>;
+
+const multiExpr = <span>{greeting} {name}</span>;
+const multiExprSpaced = <span> {greeting} {name} </span>;
+
+const multiLine = <span>
+
+  Hello
+
+</span>
+
+const multiLineTrailingSpace = <span>
+  Hello 
+  John
+</span>

test/__fixtures__/textInterpolation/output.js

@@ -0,0 +1,87 @@
+const _tmpl$9 = document.createElement("template");
+
+_tmpl$9.innerHTML = "<span>Hello John</span>";
+
+const _tmpl$8 = document.createElement("template");
+
+_tmpl$8.innerHTML = "<span>Hello</span>";
+
+const _tmpl$7 = document.createElement("template");
+
+_tmpl$7.innerHTML = "<span> <!--15--> <!--17--> </span>";
+
+const _tmpl$6 = document.createElement("template");
+
+_tmpl$6.innerHTML = "<span><!--10--> <!--12--></span>";
+
+const _tmpl$5 = document.createElement("template");
+
+_tmpl$5.innerHTML = "<span><!--8--> John</span>";
+
+const _tmpl$4 = document.createElement("template");
+
+_tmpl$4.innerHTML = "<span>Hello <!--6--></span>";
+
+const _tmpl$3 = document.createElement("template");
+
+_tmpl$3.innerHTML = "<span>Hello John</span>";
+
+const _tmpl$2 = document.createElement("template");
+
+_tmpl$2.innerHTML = "<span> John</span>";
+
+const _tmpl$ = document.createElement("template");
+
+_tmpl$.innerHTML = "<span>Hello </span>";
+const name = 'Jake',
+      greeting = 'Welcome';
+
+const trailing = _tmpl$.content.firstChild.cloneNode(true);
+
+const leading = _tmpl$2.content.firstChild.cloneNode(true);
+
+const extraSpaces = _tmpl$3.content.firstChild.cloneNode(true);
+
+const trailingExpr = function () {
+  const _el$4 = _tmpl$4.content.firstChild.cloneNode(true),
+        _el$5 = _el$4.firstChild,
+        _el$6 = _el$5.nextSibling;
+
+  r.insert(_el$4, name, null, _el$6);
+  return _el$4;
+}();
+
+const leadingExpr = function () {
+  const _el$7 = _tmpl$5.content.firstChild.cloneNode(true),
+        _el$8 = _el$7.firstChild;
+
+  r.insert(_el$7, greeting, null, _el$8);
+  return _el$7;
+}();
+
+const multiExpr = function () {
+  const _el$9 = _tmpl$6.content.firstChild.cloneNode(true),
+        _el$10 = _el$9.firstChild,
+        _el$11 = _el$10.nextSibling,
+        _el$12 = _el$11.nextSibling;
+
+  r.insert(_el$9, greeting, null, _el$10);
+  r.insert(_el$9, name, null, _el$12);
+  return _el$9;
+}();
+
+const multiExprSpaced = function () {
+  const _el$13 = _tmpl$7.content.firstChild.cloneNode(true),
+        _el$14 = _el$13.firstChild,
+        _el$15 = _el$14.nextSibling,
+        _el$16 = _el$15.nextSibling,
+        _el$17 = _el$16.nextSibling;
+
+  r.insert(_el$13, greeting, null, _el$15);
+  r.insert(_el$13, name, null, _el$17);
+  return _el$13;
+}();
+
+const multiLine = _tmpl$8.content.firstChild.cloneNode(true);
+
+const multiLineTrailingSpace = _tmpl$9.content.firstChild.cloneNode(true);