Initial support for TypeScript in Recast via Babylon 7 parser

.gitignore

@@ -1 +1,3 @@
 /node_modules
+/test/data/babylon-typescript-fixtures
+/test/data/graphql-tools-src

lib/fast-path.js

@@ -426,8 +426,20 @@ function containsCallExpression(node) {
 
 FPp.canBeFirstInStatement = function() {
   var node = this.getNode();
-  return !n.FunctionExpression.check(node)
-    && !n.ObjectExpression.check(node);
+
+  if (n.FunctionExpression.check(node)) {
+    return false;
+  }
+
+  if (n.ObjectExpression.check(node)) {
+    return false;
+  }
+
+  if (n.ClassExpression.check(node)) {
+    return false;
+  }
+
+  return true;
 };
 
 FPp.firstInStatement = function() {