Fix iteration over undefined values

Allow for iteration on undefined values, but special case undefined and null to prevent rendering errors when not running in strict mode. Fixes #1093
2015-09-23 21:17:57 -05:00
parent 08781798f5
commit fffb5a985f
3 changed files with 24 additions and 9 deletions
@@ -984,13 +984,14 @@ JavaScriptCompiler.prototype = {
  setupHelper: function(paramSize, name, blockHelper) {
    let params = [],
        paramsInit = this.setupHelperArgs(name, paramSize, params, blockHelper);
-    let foundHelper = this.nameLookup('helpers', name, 'helper');
+    let foundHelper = this.nameLookup('helpers', name, 'helper'),
+        callContext = this.aliasable(`${this.contextName(0)} != null ? ${this.contextName(0)} : {}`);

    return {
      params: params,
      paramsInit: paramsInit,
      name: foundHelper,
-      callParams: [this.contextName(0)].concat(params)
+      callParams: [callContext].concat(params)
    };
  },