From 23cab771b281bad773ad3ed27678f75eef886dae Mon Sep 17 00:00:00 2001
From: Zachary Bluedorn <zachary.bluedorn@gmail.com>
Date: Thu, 1 Oct 2020 11:19:46 -0400
Subject: [PATCH] Don't overwrite variables if the key is present. Affects
 variables with randomness

---
 src/eval.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/eval.ts b/src/eval.ts
index bc4b8c7..e6476a7 100644
--- a/src/eval.ts
+++ b/src/eval.ts
@@ -276,9 +276,9 @@ function aggregateResults(results: Evaluation[][]): Evaluation[] {
       (acc, evaluation) =>
         didFail(evaluation)
           ? (acc[evaluation.variable] = 'Error - check this variable\'s code', acc)
-          : acc[evaluation.variable]
+          : acc.hasOwnProperty(evaluation.variable)
             ? acc
-            : (acc[evaluation.variable] = evaluation.result || '', acc),
+            : (acc[evaluation.variable] = evaluation.result as string, acc),
       map);
 
   const eitherErrorOrEvaluationsMap = (evaluations: Evaluation[]) =>