diff --git a/packages/squiggle-lang/src/rescript/Reducer/Reducer_Dispatch/Reducer_Dispatch_BuiltIn.res b/packages/squiggle-lang/src/rescript/Reducer/Reducer_Dispatch/Reducer_Dispatch_BuiltIn.res
index 47c39140..3e365fd4 100644
--- a/packages/squiggle-lang/src/rescript/Reducer/Reducer_Dispatch/Reducer_Dispatch_BuiltIn.res
+++ b/packages/squiggle-lang/src/rescript/Reducer/Reducer_Dispatch/Reducer_Dispatch_BuiltIn.res
@@ -53,6 +53,10 @@ let callInternal = (call: functionCall): result<'b, errorValue> => {
     value->Ok
   }
 
+  /*
+    NOTE: This function is cancelled. The related issue is
+    https://github.com/webpack/webpack/issues/13435
+  */
   let inspectPerformance = (value: expressionValue, label: string) => {
     // let _ = %raw("{performance} = require('perf_hooks')")
     // let start = %raw(`performance.now()`)