From 53255dc9640126fe9c291fbbd2512d8f885617ab Mon Sep 17 00:00:00 2001
From: Luc Patiny <luc@patiny.com>
Date: Tue, 13 Aug 2019 19:03:23 +0200
Subject: [PATCH] deal with array of empty exclusions

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

diff --git a/src/Spectra.js b/src/Spectra.js
index 5ed68fc..24166e6 100644
--- a/src/Spectra.js
+++ b/src/Spectra.js
@@ -14,7 +14,7 @@ export class Spectra {
           scaleSD: true,
           exclusions: []
         }
-        : options.normalization;
+        : JSON.parse(JSON.stringify(options.normalization));
     if (this.normalizationOptions.from > this.normalizationOptions.to) {
       [this.normalizationOptions.from, this.normalizationOptions.to] = [
         this.normalizationOptions.to,
@@ -23,7 +23,7 @@ export class Spectra {
     }
     if (Array.isArray(this.normalizationOptions.exclusions)) {
       this.normalizationOptions.exclusions = this.normalizationOptions.exclusions.filter(
-        (exclusion) => !exclusion.ignore
+        (exclusion) => exclusion && !exclusion.ignore
       );
     }
     this.data = [];