✨ Add reactiveData mixin

src/mixins/reactiveData.js

@@ -0,0 +1,34 @@
+module.exports = {
+  data () {
+    return {
+      chartData: null
+    }
+  },
+  watch: {
+    'chartData': {
+      handler (newData, oldData) {
+        if (oldData) {
+          let chart = this._chart
+
+          let newDataLabels = newData.datasets.map((dataset) => {
+            return dataset.label
+          })
+
+          let oldDataLabels = oldData.datasets.map((dataset) => {
+            return dataset.label
+          })
+
+          if (JSON.stringify(newDataLabels) === JSON.stringify(oldDataLabels)) {
+            newData.datasets.forEach((dataset, i) => {
+              chart.data.datasets[i].data = dataset.data
+            })
+            chart.data.labels = newData.labels
+            chart.update()
+          } else {
+            this.renderChart(this.chartData, this.options)
+          }
+        }
+      }
+    }
+  }
+}