Merge pull request #12850 from plainheart/fix-lines-mergeOption-12836

fix(lines): lines series shouldn't disappear after `setOption({})`. (#12836)
apache · Aug 4, 2020 · 419336e · 419336e
2 parents 57914fb + 42ba17f
commit 419336e
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diff --git a/src/chart/lines/LinesSeries.js b/src/chart/lines/LinesSeries.js
@@ -80,8 +80,6 @@ var LinesSeries = SeriesModel.extend({
     },
 
     mergeOption: function (option) {
-        // The input data may be null/undefined.
-        option.data = option.data || [];
 
         compatEc2(option);
 
@@ -333,4 +331,4 @@ var LinesSeries = SeriesModel.extend({
     }
 });
 
-export default LinesSeries;
+export default LinesSeries;
diff --git a/test/lines-mergeOption.html b/test/lines-mergeOption.html