Update for modern browsers

README.md

@@ -63,7 +63,6 @@ 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

package.json

@@ -7,7 +7,7 @@
   "module": "dist/index.esm.js",
   "scripts": {
     "clean": "rm -rf dist",
-    "lint": "eslint src/ test/ && flow check",
+    "lint": "eslint . && flow check",
     "prebuild": "npm run clean && npm run lint",
     "build": "rollup -c && cp src/task-lists-element.js.flow dist/index.esm.js.flow && cp src/task-lists-element.js.flow dist/index.umd.js.flow",
     "pretest": "npm run build",
@@ -24,12 +24,10 @@
   ],
   "devDependencies": {
     "@babel/core": "^7.2.2",
-    "@babel/preset-env": "^7.2.3",
-    "@babel/preset-flow": "^7.0.0",
-    "babel-plugin-transform-custom-element-classes": "^0.1.0",
+    "babel-preset-github": "^2.1.1",
     "chai": "^4.2.0",
     "eslint": "^5.12.0",
-    "eslint-plugin-github": "^1.6.1",
+    "eslint-plugin-github": "^1.9.0",
     "flow-bin": "^0.92.1",
     "karma": "^4.0.0",
     "karma-chai": "^0.1.0",
@@ -39,5 +37,8 @@
     "mocha": "^5.2.0",
     "rollup": "^1.0.2",
     "rollup-plugin-babel": "^4.2.0"
-  }
+  },
+  "eslintIgnore": [
+    "dist/"
+  ]
 }

rollup.config.js

@@ -19,8 +19,7 @@ export default {
   ],
   plugins: [
     babel({
-      plugins: ['transform-custom-element-classes'],
-      presets: ['@babel/env', '@babel/flow']
+      presets: ['github']
     })
   ]
 }

src/index.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict */
 
 import TaskListsElement from './task-lists-element'
 export {TaskListsElement as default}

src/sortable.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict */
 
 type SortStartHandler = (srcList: Element) => mixed
 type SortEndHandler = ({

src/task-lists-element.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict */
 
 import {isDragging, sortable} from './sortable'
 

src/task-lists-element.js.flow

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict */
 
 declare class TaskListsElement extends HTMLElement {
   get disabled(): boolean;