From 32e6b2da78b439c1aef79835d42b2f20c6f90ecd Mon Sep 17 00:00:00 2001
From: Julia Friesel <julia.friesel@gmail.com>
Date: Fri, 28 Sep 2018 18:05:17 +0200
Subject: [PATCH] Add back cervix value filter

---
 lib/sympto/cervix.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/sympto/cervix.js b/lib/sympto/cervix.js
index 1f012b32..15c990a2 100644
--- a/lib/sympto/cervix.js
+++ b/lib/sympto/cervix.js
@@ -2,6 +2,7 @@ export default function (cycleDays, tempEvalEndIndex) {
   const notDetected = { detected: false }
   const cervixDays = cycleDays
     .filter(day => day.cervix && !day.cervix.exclude)
+    .filter(day => typeof day.cervix.opening === 'number' && typeof day.cervix.firmness === 'number')
 
   // we search for the day of cervix peak, which must:
   // * have fertile cervix values
-- 
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