Refactor code-style

package.json

@@ -44,10 +44,6 @@
   },
   "xo": {
     "prettier": true,
-    "rules": {
-      "no-var": "off",
-      "prefer-arrow-callback": "off"
-    },
     "ignores": [
       "**/types"
     ]

packages/remark-cli/test.js

@@ -2,16 +2,16 @@ import url from 'url'
 import execa from 'execa'
 import test from 'tape'
 
-test('remark-cli', function (t) {
+test('remark-cli', (t) => {
   t.plan(2)
 
-  t.test('should show help on `--help`', function (st) {
+  t.test('should show help on `--help`', (t) => {
     const bin = url.fileURLToPath(new URL('./cli.js', import.meta.url))
 
-    st.plan(1)
+    t.plan(1)
 
-    execa(bin, ['--help']).then(function (result) {
-      st.equal(
+    execa(bin, ['--help']).then((result) => {
+      t.equal(
         result.stdout,
         [
           'Usage: remark [options] [path | glob ...]',
@@ -62,18 +62,18 @@ test('remark-cli', function (t) {
     })
   })
 
-  t.test('should show version on `--version`', function (st) {
+  t.test('should show version on `--version`', (t) => {
     const bin = url.fileURLToPath(new URL('./cli.js', import.meta.url))
 
-    st.plan(2)
+    t.plan(2)
 
-    execa(bin, ['--version']).then(function (result) {
-      st.ok(
+    execa(bin, ['--version']).then((result) => {
+      t.ok(
         /remark: \d+\.\d+\.\d+/.test(result.stdout),
         'should include remark version'
       )
 
-      st.ok(
+      t.ok(
         /remark-cli: \d+\.\d+\.\d+/.test(result.stdout),
         'should include remark-cli version'
       )

packages/remark-parse/index.js

@@ -1,19 +1,15 @@
 import {fromMarkdown} from 'mdast-util-from-markdown'
 
 export default function remarkParse(options) {
-  var self = this
-
-  this.Parser = parse
-
-  function parse(doc) {
+  this.Parser = (doc) => {
     return fromMarkdown(
       doc,
-      Object.assign({}, self.data('settings'), options, {
+      Object.assign({}, this.data('settings'), options, {
         // Note: these options are not in the readme.
         // The goal is for them to be set by plugins on `data` instead of being
         // passed by users.
-        extensions: self.data('micromarkExtensions') || [],
-        mdastExtensions: self.data('fromMarkdownExtensions') || []
+        extensions: this.data('micromarkExtensions') || [],
+        mdastExtensions: this.data('fromMarkdownExtensions') || []
       })
     )
   }

packages/remark-parse/test.js

@@ -5,23 +5,23 @@ import {gfmFromMarkdown} from 'mdast-util-gfm'
 import {removePosition} from 'unist-util-remove-position'
 import remarkParse from './index.js'
 
-test('remarkParse', function (t) {
+test('remarkParse', (t) => {
   t.equal(
     unified().use(remarkParse).parse('Alfred').children.length,
     1,
     'should accept a `string`'
   )
 
-  t.test('extensions', function (st) {
-    var tree = unified()
+  t.test('extensions', (t) => {
+    const tree = unified()
       .data('micromarkExtensions', [gfm()])
       .data('fromMarkdownExtensions', [gfmFromMarkdown])
       .use(remarkParse)
       .parse('* [x] contact@example.com ~~strikethrough~~')
 
     removePosition(tree, true)
 
-    st.deepEqual(
+    t.deepEqual(
       tree,
       {
         type: 'root',
@@ -62,7 +62,7 @@ test('remarkParse', function (t) {
       'should work'
     )
 
-    st.end()
+    t.end()
   })
 
   t.end()

packages/remark-stringify/index.js

@@ -1,18 +1,14 @@
 import {toMarkdown} from 'mdast-util-to-markdown'
 
 export default function remarkStringify(options) {
-  var self = this
-
-  this.Compiler = compile
-
-  function compile(tree) {
+  this.Compiler = (tree) => {
     return toMarkdown(
       tree,
-      Object.assign({}, self.data('settings'), options, {
+      Object.assign({}, this.data('settings'), options, {
         // Note: this option is not in the readme.
         // The goal is for it to be set by plugins on `data` instead of being
         // passed by users.
-        extensions: self.data('toMarkdownExtensions') || []
+        extensions: this.data('toMarkdownExtensions') || []
       })
     )
   }