Put limit on AST display as string.

(AST itself has no nesting limits.  BUt this prevents a crash
due to recursion in util.inspect.)

See #272.

1 files changed, 1 insertions, 1 deletions

diff --git a/js/lib/index.js b/js/lib/index.js
index f1023c1..8b26946 100755
--- a/js/lib/index.js
+++ b/js/lib/index.js
@@ -14,7 +14,7 @@
 var util = require('util');
 
 var renderAST = function(tree) {
-    return util.inspect(tree.toAST(), {depth: null});
+    return util.inspect(tree.toAST(), {depth: 20});
 };
 
 module.exports.Node = require('./node');