update node devDependencies

.eslintrc.json

@@ -19,9 +19,11 @@
         "Boolean": "boolean",
         "Number": "number",
         "String": "string",
-        "object": "Object"
+        "object": "Object",
+        "array": "Array"
       }
-    }]
+    }],
+    "no-useless-escape": "off"
   },
   "env": {
     "browser": true,

lib/legacy/polymer.dom.html

@@ -198,9 +198,11 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
   function forwardMethods(proto, methods) {
     for (let i=0; i < methods.length; i++) {
       let method = methods[i];
+      /* eslint-disable valid-jsdoc */
       proto[method] = /** @this {DomApi} */ function() {
         return this.node[method].apply(this.node, arguments);
       };
+      /* eslint-enable */
     }
   }
 

package.json

@@ -9,27 +9,27 @@
   },
   "devDependencies": {
     "@polymer/gen-closure-declarations": "^0.4.0",
-    "@webcomponents/shadycss": "^1.0.6",
-    "@webcomponents/webcomponentsjs": "^1.0.14",
+    "@webcomponents/shadycss": "^1.1.0",
+    "@webcomponents/webcomponentsjs": "^1.0.20",
     "babel-preset-minify": "^0.2.0",
     "del": "^3.0.0",
     "dom5": "^2.3.0",
-    "eslint-plugin-html": "^2.0.1",
-    "google-closure-compiler": "^20170910.0.0",
+    "eslint-plugin-html": "^4.0.1",
+    "google-closure-compiler": "^20171112.0.0",
     "gulp": "^3.9.1",
     "gulp-babel": "^6.1.2",
-    "gulp-eslint": "^3.0.1",
+    "gulp-eslint": "^4.0.0",
     "gulp-if": "^2.0.1",
     "gulp-replace": "^0.6.1",
     "gulp-size": "^2.1.0",
     "gulp-vulcanize": "^6.0.1",
     "lazypipe": "^1.0.1",
     "merge-stream": "^1.0.1",
-    "parse5": "^3.0.2",
-    "polymer-build": "^2.1.0",
+    "parse5": "^3.0.3",
+    "polymer-build": "^2.1.1",
     "run-sequence": "^2.2.0",
     "through2": "^2.0.0",
-    "web-component-tester": "^6.3.0"
+    "web-component-tester": "^6.4.1"
   },
   "scripts": {
     "build": "gulp",