lint: apply standard 13 style

.travis.yml

@@ -27,8 +27,8 @@ before_install:
   # Setup Node.js version-specific dependencies
   - |
     # eslint for linting
-    # - remove on Node.js < 6
-    if [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -lt 6 ]]; then
+    # - remove on Node.js < 8
+    if [[ "$(cut -d. -f1 <<< "$TRAVIS_NODE_VERSION")" -lt 8 ]]; then
       node -pe 'Object.keys(require("./package").devDependencies).join("\n")' | \
         grep -E '^eslint(-|$)' | \
         xargs npm rm --save-dev

package.json

@@ -18,12 +18,12 @@
   },
   "devDependencies": {
     "deep-equal": "1.0.1",
-    "eslint": "5.16.0",
-    "eslint-config-standard": "12.0.0",
-    "eslint-plugin-import": "2.17.3",
+    "eslint": "6.0.1",
+    "eslint-config-standard": "13.0.1",
+    "eslint-plugin-import": "2.18.0",
     "eslint-plugin-markdown": "1.0.0",
-    "eslint-plugin-node": "7.0.1",
-    "eslint-plugin-promise": "4.1.1",
+    "eslint-plugin-node": "9.1.0",
+    "eslint-plugin-promise": "4.2.1",
     "eslint-plugin-standard": "4.0.0",
     "istanbul": "0.4.5",
     "mocha": "6.1.4",

test/cookieParser.js

@@ -272,7 +272,7 @@ describe('cookieParser.signedCookies(obj, secret)', function () {
         fizz: 's:foobar.JTCAgiMWsnuZpN3mrYnEUjXlGxmDi4POCBnWbRxse88'
       }
 
-      deepEqual(cookieParser.signedCookies(obj, [ 'keyboard cat', 'nyan cat' ]), {
+      deepEqual(cookieParser.signedCookies(obj, ['keyboard cat', 'nyan cat']), {
         buzz: 'foobar',
         fizz: 'foobar'
       })