add-v4-compatibility (#695)

* add-v4-compatibility

* fix typings

* fix ts

* Update actual peer dependency

* update date fns adapter

* Don't parse node modules

Author: LeeLenaleee

docs/.vuepress/config.js

@@ -74,6 +74,15 @@ module.exports = {
     }],
   ],
   chainWebpack: (config) => {
+    config.module
+      .rule('chart.js')
+      .include.add(path.resolve('node_modules/chart.js')).end()
+      .use('babel-loader')
+      .loader('babel-loader')
+      .options({
+        presets: ['@babel/preset-env']
+      })
+      .end();
     config.merge({
       resolve: {
         alias: {

karma.conf.js

@@ -59,7 +59,7 @@ module.exports = function(karma) {
       {pattern: 'test/fixtures/**/*.js', included: false},
       {pattern: 'test/fixtures/**/*.json', included: false},
       {pattern: 'test/fixtures/**/*.png', included: false},
-      {pattern: 'node_modules/chart.js/dist/chart.js'},
+      {pattern: 'node_modules/chart.js/dist/chart.umd.js'},
       {pattern: 'node_modules/hammer-simulator/index.js'},
       {pattern: 'node_modules/hammerjs/hammer.js'},
       {pattern: 'node_modules/chartjs-adapter-date-fns/dist/chartjs-adapter-date-fns.bundle.js'},