Refactor code-style

Author: wooorm

index.js

@@ -10,15 +10,15 @@
 import {convert} from 'unist-util-is'
 
 /** @type {Array.<Node>} */
-var empty
+let empty
 
 /**
  * @param {Node} node
  * @param {null|undefined|Type|Props|TestFunctionAnything|Array<Type|Props|TestFunctionAnything>} [test]
  * @returns {number}
  */
 export function size(node, test) {
-  var is = convert(test)
+  const is = convert(test)
 
   return fastSize(node)
 
@@ -28,9 +28,9 @@ export function size(node, test) {
   function fastSize(node) {
     /** @type {Array.<Node>} */
     // @ts-ignore Looks like a parent.
-    var children = (node && node.children) || empty
-    var count = 0
-    var index = -1
+    const children = (node && node.children) || empty
+    let count = 0
+    let index = -1
 
     if (children && children.length > 0) {
       while (++index < children.length) {

package.json

@@ -64,11 +64,7 @@
     "trailingComma": "none"
   },
   "xo": {
-    "prettier": true,
-    "rules": {
-      "no-var": "off",
-      "prefer-arrow-callback": "off"
-    }
+    "prettier": true
   },
   "remarkConfig": {
     "plugins": [

readme.md

@@ -27,7 +27,7 @@ npm install unist-util-size
 import {h} from 'hastscript'
 import {size} from 'unist-util-size'
 
-var tree = h('div', [
+const tree = h('div', [
   h('p', [
     'Some ',
     h('strong', 'importance'),

test.js

@@ -2,8 +2,8 @@ import test from 'tape'
 import h from 'hastscript'
 import {size} from './index.js'
 
-test('unist-util-size', function (t) {
-  var tree = h('div', [
+test('unist-util-size', (t) => {
+  const tree = h('div', [
     h('p', [
       'Some ',
       h('strong', 'importance'),