Drop legacy browser support

.browserslistrc

@@ -1,4 +1,4 @@
-> 0.5%
-last 2 versions
-Firefox ESR
-not dead
+defaults
+not IE 11
+not IE_Mob 11
+maintained node versions

.eslintrc.yml

@@ -7,8 +7,6 @@ env:
   browser: true
   node: true
 
-parser: babel-eslint
-
 parserOptions:
   ecmaVersion: 7
   sourceType: module

docs/docs/developers/index.md

@@ -22,13 +22,14 @@ Latest builds are available for testing at:
 
 ## Browser support
 
-Chart.js offers support for the following browsers:
+All modern and up-to-date browsers are supported, including, but not limited to:
 
-- Chrome 50+
-- Firefox 45+
-- Internet Explorer 11
-- Edge 14+
-- Safari 9+
+Chrome
+Edge
+Firefox
+Safari
+
+As of version 3, we have dropped Internet Explorer 11 support.
 
 Browser support for the canvas element is available in all modern & major mobile browsers. [CanIUse](https://caniuse.com/#feat=canvas)
 

karma.conf.js

@@ -1,12 +1,12 @@
 /* eslint-disable import/no-commonjs */
 
 const commonjs = require('@rollup/plugin-commonjs');
+const istanbul = require('rollup-plugin-istanbul');
 const json = require('@rollup/plugin-json');
 const resolve = require('@rollup/plugin-node-resolve').default;
 const builds = require('./rollup.config');
 const yargs = require('yargs');
 
-
 module.exports = function(karma) {
 	const args = yargs
 		.option('verbose', {default: false})
@@ -101,12 +101,10 @@ module.exports = function(karma) {
 		browserDisconnectTolerance: 3
 	});
 
-	// https://swizec.com/blog/how-to-run-javascript-tests-in-chrome-on-travis/swizec/6647
-	if (process.env.TRAVIS) {
-		karma.customLaunchers.chrome.flags.push('--no-sandbox');
-	}
-
 	if (args.coverage) {
+		build.plugins.push(istanbul({
+			exclude: 'node_modules/**/*.js'
+		}));
 		karma.reporters.push('coverage');
 		karma.coverageReporter = {
 			dir: 'coverage/',