Remove gulp, update deps, use chartjs-test-utils (#421)

Author: kurkle

.eslintrc.yml

@@ -1,10 +1,32 @@
-extends: chartjs
 
-parserOptions:
-  sourceType: module
+extends:
+  - chartjs
+  - plugin:es/no-new-in-es2019
 
 env:
+  es6: true
   browser: true
   node: true
 
-plugins: ['html']
+parserOptions:
+  ecmaVersion: 2018
+  sourceType: module
+  ecmaFeatures:
+    impliedStrict: true
+    modules: true
+
+plugins: ['html', 'es']
+
+rules:
+  class-methods-use-this: "off"
+  complexity: ["warn", 10]
+  max-statements: ["warn", 30]
+  no-empty-function: "off"
+  no-use-before-define: ["error", { "functions": false }]
+  # disable everything, except Rest/Spread Properties in ES2018
+  es/no-async-iteration: "error"
+  es/no-malformed-template-literals: "error"
+  es/no-regexp-lookbehind-assertions: "error"
+  es/no-regexp-named-capture-groups: "error"
+  es/no-regexp-s-flag: "error"
+  es/no-regexp-unicode-property-escapes: "error"

gulpfile.js

@@ -44,16 +44,17 @@ module.exports = function(karma) {
 		},
 
 		files: [
-//			{pattern: 'test/fixtures/**/*.js', included: false},
-//			{pattern: 'test/fixtures/**/*.json', included: false},
-//			{pattern: 'test/fixtures/**/*.png', included: false},
-			'node_modules/chart.js/dist/chart.js',
-			'test/index.js',
-			'src/index.js'
-		].concat(args.inputs),
+			// {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: 'test/index.js'},
+			{pattern: 'src/index.js'},
+			{pattern: 'test/specs/**/*.js'}
+		],
 
 		preprocessors: {
-//			'test/fixtures/**/*.js': ['fixtures'],
+			// 'test/fixtures/**/*.js': ['fixtures'],
 			'test/specs/**/*.js': ['rollup'],
 			'test/index.js': ['rollup'],
 			'src/index.js': ['sources']