Fix handling of base64-encoded legendrank in get_legend_data.js

Author: my-tien

src/components/legend/get_legend_data.js

@@ -1,5 +1,6 @@
 'use strict';
 
+const { isArrayOrTypedArray } = require('../../lib/array');
 var Registry = require('../../registry');
 var helpers = require('./helpers');
 
@@ -101,7 +102,7 @@ module.exports = function getLegendData(calcdata, opts, hasMultipleLegends) {
         var groupMinRank = Infinity;
         for(j = 0; j < legendData[i].length; j++) {
             var legendrank = legendData[i][j].trace.legendrank;
-            var rank = Array.isArray(legendrank) ? Math.min(legendrank) : legendrank;
+            var rank = isArrayOrTypedArray(legendrank) ? Math.min(legendrank) : legendrank;
             if(groupMinRank > rank) groupMinRank = rank;
         }
 
@@ -118,8 +119,8 @@ module.exports = function getLegendData(calcdata, opts, hasMultipleLegends) {
     };
 
     var orderFn2 = function(a, b) {
-        var a_rank = Array.isArray(a.trace.legendrank) ? a.trace.legendrank[a.i] : a.trace.legendrank;
-        var b_rank = Array.isArray(b.trace.legendrank) ? b.trace.legendrank[b.i] : b.trace.legendrank;
+        var a_rank = isArrayOrTypedArray(a.trace.legendrank) ? a.trace.legendrank[a.i] : a.trace.legendrank;
+        var b_rank = isArrayOrTypedArray(b.trace.legendrank) ? b.trace.legendrank[b.i] : b.trace.legendrank;
         return (
             (a_rank - b_rank) ||
             (a._preSort - b._preSort) // fallback for old Chrome < 70 https://bugs.chromium.org/p/v8/issues/detail?id=90