Refactor code-style

Author: wooorm

index.js

@@ -9,10 +9,10 @@
  * @returns {Style|null}
  */
 export function headingStyle(node, relative) {
-  var last = node.children[node.children.length - 1]
-  var depth = node.depth
-  var pos = node && node.position && node.position.end
-  var final = last && last.position && last.position.end
+  const last = node.children[node.children.length - 1]
+  const depth = node.depth
+  const pos = node && node.position && node.position.end
+  const final = last && last.position && last.position.end
 
   if (!pos) {
     return null

package.json

@@ -65,11 +65,7 @@
     "trailingComma": "none"
   },
   "xo": {
-    "prettier": true,
-    "rules": {
-      "no-var": "off",
-      "prefer-arrow-callback": "off"
-    }
+    "prettier": true
   },
   "remarkConfig": {
     "plugins": [

readme.md

@@ -24,11 +24,11 @@ npm install mdast-util-heading-style
 ## Use
 
 ```js
-import unified from 'unified'
-import remarkParse from 'remark-parse'
+import {unified} from 'unified'
 import {headingStyle} from 'mdast-util-heading-style'
+import remarkParse from 'remark-parse'
 
-var processor = unified().use(remarkParse)
+const processor = unified().use(remarkParse)
 
 headingStyle(processor.parse('# ATX').children[0]) // => 'atx'
 headingStyle(processor.parse('# ATX #\n').children[0]) // => 'atx-closed'

test.js

@@ -7,8 +7,8 @@ import test from 'tape'
 import remark from 'remark'
 import {headingStyle} from './index.js'
 
-test('headingStyle', function (t) {
-  t.throws(function () {
+test('headingStyle', (t) => {
+  t.throws(() => {
     // @ts-ignore runtime.
     headingStyle()
   }, 'should fail without node')