Update dev-dependencies

Author: wooorm

.prettierignore

@@ -1,3 +1,5 @@
 coverage/
 hast-util-is-element.js
 hast-util-is-element.min.js
+*.json
+*.md

package.json

@@ -30,15 +30,15 @@
   "devDependencies": {
     "browserify": "^16.0.0",
     "nyc": "^15.0.0",
-    "prettier": "^1.0.0",
-    "remark-cli": "^7.0.0",
-    "remark-preset-wooorm": "^6.0.0",
-    "tape": "^4.0.0",
+    "prettier": "^2.0.0",
+    "remark-cli": "^8.0.0",
+    "remark-preset-wooorm": "^7.0.0",
+    "tape": "^5.0.0",
     "tinyify": "^2.0.0",
-    "xo": "^0.27.0"
+    "xo": "^0.32.0"
   },
   "scripts": {
-    "format": "remark . -qfo && prettier --write \"**/*.js\" && xo --fix",
+    "format": "remark . -qfo && prettier . --write && xo --fix",
     "build-bundle": "browserify . -s hastUtilIsElement > hast-util-is-element.js",
     "build-mangle": "browserify . -s hastUtilIsElement -p tinyify > hast-util-is-element.min.js",
     "build": "npm run build-bundle && npm run build-mangle",

test.js

@@ -3,19 +3,19 @@
 var test = require('tape')
 var isElement = require('.')
 
-test('isElement', function(t) {
+test('isElement', function (t) {
   t.equal(isElement(), false, 'should return `false` without node')
   t.equal(isElement(null), false, 'should return `false` with `null`')
 
   t.throws(
-    function() {
+    function () {
       isElement(null, true)
     },
     'Expected `string` or `Array.<string>` for `tagNames`, not `true`',
     'should throw when the second parameter is invalid'
   )
 
-  t.test('isElement(node)', function(st) {
+  t.test('isElement(node)', function (st) {
     st.equal(
       isElement({type: 'text'}),
       false,
@@ -37,7 +37,7 @@ test('isElement', function(t) {
     st.end()
   })
 
-  t.test('isElement(node, tagName)', function(st) {
+  t.test('isElement(node, tagName)', function (st) {
     st.equal(
       isElement({type: 'text'}, 'div'),
       false,
@@ -65,7 +65,7 @@ test('isElement', function(t) {
     st.end()
   })
 
-  t.test('isElement(node, tagNames)', function(st) {
+  t.test('isElement(node, tagNames)', function (st) {
     st.equal(
       isElement({type: 'text'}, ['div']),
       false,