feat: Add @types/chart.js types in typescript definitions (#536)

use @types/chart.js types in typescript definitions

Author: apertureless

package.json

@@ -68,6 +68,7 @@
     "@babel/core": "^7.0.0-beta.42",
     "@babel/preset-env": "^7.0.0-beta.42",
     "@babel/preset-stage-2": "^7.0.0-beta.42",
+    "@types/chart.js": "^2.7.55",
     "babel-loader": "8.0.0-beta.0",
     "chai": "^3.5.0",
     "chart.js": "^2.8.0",

types/components.d.ts

@@ -1,7 +1,8 @@
 import Vue from 'vue'
+import { ChartData, ChartOptions } from 'chart.js';
 
 /** vue-chartjs component common definition */
 export declare class BaseChart extends Vue {
   addPlugin (plugin?: string[]): void
-  renderChart (chartData: any, options?: any): void
+  renderChart (chartData: ChartData, options?: ChartOptions): void
 }

types/mixins.d.ts

@@ -1,9 +1,10 @@
-import Vue from 'vue'
+import Vue from 'vue';
+import { ChartData } from 'chart.js';
 
 export declare class ReactiveDataMixin extends Vue {
-  chartData: any;
+  chartData: ChartData;
 }
 
 export declare class ReactivePropMixin extends Vue {
-  readonly chartData: any;
+  readonly chartData: ChartData;
 }