wip: Refactor mixin in seperate functions

src/mixins/index.js

@@ -1,7 +1,14 @@
+/* eslint-disable */
+
 function dataHandler (newData, oldData) {
   if (oldData) {
-    let chart = this.$data._chart
+    const chart = this.$data._chart
+    _checkChanges(newData, oldData, chart)
+  } else {
+    _destroyAndRenderChart(chart)
+}
 
+function _checkChanges (newData, oldData, chart) {
   // Get new and old DataSet Labels
   let newDatasetLabels = newData.datasets.map((dataset) => {
     return dataset.label
@@ -51,16 +58,16 @@ function dataHandler (newData, oldData) {
     }
     chart.update()
   } else {
+    _destroyAndRenderChart(chart)
+  }
+}
+
+function _destroyAndRenderChart (chart) {
+  if (chart) {
     chart.destroy()
-      this.renderChart(this.chartData, this.options)
-    }
-  } else {
-    if (this.$data._chart) {
-      this.$data._chart.destroy()
   }
   this.renderChart(this.chartData, this.options)
 }
-}
 
 export const reactiveData = {
   data () {
@@ -77,7 +84,6 @@ export const reactiveData = {
 export const reactiveProp = {
   props: {
     chartData: {
-      type: Object,
       required: true,
       default: () => {}
     }
@@ -91,3 +97,4 @@ export default {
   reactiveData,
   reactiveProp
 }
+