Upgrade: ESLint v6.8

.eslintrc.yml

@@ -3,13 +3,12 @@ extends:
   - semistandard
   - plugin:prettier/recommended
 env:
-  node: yes
-  browser: yes
+  node: true
+  browser: true
 parserOptions:
   ecmaVersion: 5
   ecmaFeatures:
-    globalReturn: no
-    jsx: no
+    jsx: false
   sourceType: script
 rules:
   strict:
@@ -31,14 +30,14 @@ overrides:
     parserOptions:
       ecmaVersion: 2017
     env:
-      browser: no
+      browser: false
 
   - files:
       - test/**/*.{js,mjs}
     env:
-      mocha: yes
+      mocha: true
     globals:
-      expect: no
+      expect: readonly
   - files:
       - bin/*
       - lib/**/*.js

browser-entry.js

@@ -129,7 +129,7 @@ mocha.setup = function(opts) {
     opts = {ui: opts};
   }
   for (var opt in opts) {
-    if (opts.hasOwnProperty(opt)) {
+    if (Object.prototype.hasOwnProperty.call(opts, opt)) {
       this[opt](opts[opt]);
     }
   }