Merge pull request #26 from github/modern-js

Update for modern browsers

Author: mislav

.babelrc

@@ -1,20 +1,13 @@
 {
   "env": {
     "esm": {
-      "plugins": [
-        "transform-custom-element-classes"
-      ],
-      "presets": [
-        ["@babel/env", {"modules": false}],
-        "@babel/flow"
-      ]
+      "presets": ["github"]
     },
     "umd": {
       "plugins": [
-        "transform-custom-element-classes",
         "@babel/plugin-transform-modules-umd"
       ],
-      "presets": ["@babel/env", "@babel/flow"]
+      "presets": ["github"]
     }
   }
 }

.eslintrc.json

@@ -1,7 +1,25 @@
 {
   "extends": [
+    "plugin:github/browser",
     "plugin:github/es6",
-    "plugin:github/browser"
+    "plugin:github/flow"
   ],
-  "parser": "babel-eslint"
+  "overrides": [
+    {
+      "files": "test/**/*.js",
+      "rules": {
+        "flowtype/require-valid-file-annotation": "off"
+      }
+    },
+    {
+      "files": "test/**/*.js",
+      "excludedFiles": "test/karma.config.js",
+      "env": {
+        "mocha": true
+      },
+      "globals": {
+        "assert": true
+      }
+    }
+  ]
 }

README.md

@@ -92,7 +92,6 @@ Browsers without native [custom element support][support] require a [polyfill][]
 - Chrome
 - Firefox
 - Safari
-- Internet Explorer 11
 - Microsoft Edge
 
 [support]: https://caniuse.com/#feat=custom-elementsv1

index.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict */
 
 class DetailsMenuElement extends HTMLElement {
   constructor() {

index.js.flow

@@ -1,8 +1,12 @@
-/* @flow */
+/* @flow strict */
 
 declare class DetailsMenuElement extends HTMLElement {
   get preload(): boolean;
   set preload(value: boolean): void;
   get src(): string;
   set src(url: string): void;
 }
+
+declare module '@github/details-menu-element' {
+  declare export default typeof DetailsMenuElement
+}