Fix ESLint warnings

.eslintrc.json

@@ -1,7 +1,8 @@
 {
   "extends": "eslint:recommended",
   "parserOptions": {
-    "ecmaVersion": 6
+    "ecmaVersion": 6,
+    "sourceType": "module"
   },
   "rules": {
     "no-console": "off",

test/unit/dom-bind.html

@@ -26,7 +26,7 @@
 import '../../polymer-legacy.js';
 import './dom-bind-elements1.js';
 import './dom-bind-elements2.js';
-/* global earlyDomBind earlyBoundChild declaredXBasic1 declaredXBasic2 declarativeDomBind boundTextDiv container needsHost nonUpgrade*/
+/* global earlyDomBind */
 earlyDomBind.value = 'hi!';
 </script>
 
@@ -79,6 +79,7 @@
 
 suite('dom-bind touched before upgrade', function() {
   test('value binds top-down', function() {
+    /* global earlyBoundChild*/
     assert.equal(earlyBoundChild.textContent, 'hi!');
   });
 });
@@ -90,6 +91,7 @@
   var el2;
 
   setup(function() {
+    /* global declarativeDomBind declaredXBasic1 declaredXBasic2 */
     domBind = declarativeDomBind;
     el1 = declaredXBasic1;
     el2 = declaredXBasic2;
@@ -129,6 +131,7 @@
 
   test('initial value notifies to dom-bind', function() {
     assert.equal(domBind.boundText, 'this text is bound');
+    /* global boundTextDiv */
     assert.equal(boundTextDiv.textContent, 'this text is bound');
   });
 
@@ -208,6 +211,7 @@
   });
 
   test('move dom-bind', function( ) {
+    /* global container */
     container.appendChild(domBind);
 
     assert.equal(container.firstElementChild, el1);
@@ -262,7 +266,7 @@
   });
 
 });
-
+/* global needsHost nonUpgrade */
 suite('timing', function() {
 
   test('late-loaded import should block stamping', function() {

test/unit/globals.html

@@ -15,7 +15,6 @@
   <script src="../../../../@webcomponents/webcomponentsjs/webcomponents-lite.js"></script>
   <script type="module">
 import '../../polymer-legacy.js';
-/* global origOwnProps:true */
 window.origOwnProps = Object.getOwnPropertyNames(window).reduce(function(props, prop) {
   return props[prop] = true && props;
 }, {});
@@ -64,8 +63,9 @@
 
 <script type="module">
 import '../../polymer-legacy.js';
-import { Polymer } from '../../lib/legacy/polymer-fn.js';
+import '../../lib/legacy/polymer-fn.js';
 
+/* global origOwnProps */
 suite('globals', function() {
 
   var expected = {

util/minimalDocument.js

@@ -8,8 +8,6 @@
  * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
  */
 
-'use strict';
-
 const dom5 = require('dom5');
 const parse5 = require('parse5');
 const {Transform} = require('stream');