1 files changed, 25 insertions, 0 deletions
diff --git a/src/js/binaryen.js-post.js b/src/js/binaryen.js-post.js
index 44dc7174b..7bd88fadc 100644
--- a/src/js/binaryen.js-post.js
+++ b/src/js/binaryen.js-post.js
@@ -485,6 +485,13 @@ function initializeConstants() {
   ].forEach(function(name) {
     Module['SideEffects'][name] = Module['_BinaryenSideEffect' + name]();
   });
+
+  // ExpressionRunner flags
+  Module['ExpressionRunner']['Flags'] = {
+    'Default': Module['_ExpressionRunnerFlagsDefault'](),
+    'PreserveSideeffects': Module['_ExpressionRunnerFlagsPreserveSideeffects'](),
+    'TraverseCalls': Module['_ExpressionRunnerFlagsTraverseCalls']()
+  };
 }
 
 // 'Module' interface
@@ -2427,6 +2434,24 @@ Module['Relooper'] = function(module) {
   };
 };
 
+// 'ExpressionRunner' interface
+Module['ExpressionRunner'] = function(module, flags, maxDepth, maxLoopIterations) {
+  var runner = Module['_ExpressionRunnerCreate'](module['ptr'], flags, maxDepth, maxLoopIterations);
+  this['ptr'] = runner;
+
+  this['setLocalValue'] = function(index, valueExpr) {
+    return Boolean(Module['_ExpressionRunnerSetLocalValue'](runner, index, valueExpr));
+  };
+  this['setGlobalValue'] = function(name, valueExpr) {
+    return preserveStack(function() {
+      return Boolean(Module['_ExpressionRunnerSetGlobalValue'](runner, strToStack(name), valueExpr));
+    });
+  };
+  this['runAndDispose'] = function(expr) {
+    return Module['_ExpressionRunnerRunAndDispose'](runner, expr);
+  };
+};
+
 function getAllNested(ref, numFn, getFn) {
   var num = numFn(ref);
   var ret = new Array(num);