Use ESM

index.js

@@ -1,17 +1,15 @@
-'use strict'
-
-var minify = require('rehype-minify-whitespace')({newlines: true})
-var visit = require('unist-util-visit-parents')
-var embedded = require('hast-util-embedded')
-var phrasing = require('hast-util-phrasing')
-var whitespace = require('hast-util-whitespace')
-var is = require('hast-util-is-element')
-var sensitive = require('html-whitespace-sensitive-tag-names')
-var repeat = require('repeat-string')
-
-module.exports = format
-
-function format(options) {
+import rehypeMinifyWhitespace from 'rehype-minify-whitespace'
+import visit from 'unist-util-visit-parents'
+import embedded from 'hast-util-embedded'
+import phrasing from 'hast-util-phrasing'
+import whitespace from 'hast-util-whitespace'
+import is from 'hast-util-is-element'
+import {whitespaceSensitiveTagNames} from 'html-whitespace-sensitive-tag-names'
+import repeat from 'repeat-string'
+
+const minify = rehypeMinifyWhitespace({newlines: true})
+
+export default function rehypeFormat(options) {
   var settings = options || {}
   var indent = settings.indent || 2
   var indentInitial = settings.indentInitial
@@ -51,7 +49,7 @@ function format(options) {
         head = null
       }
 
-      if (is(node, sensitive)) {
+      if (is(node, whitespaceSensitiveTagNames)) {
         return visit.SKIP
       }
 

package.json

@@ -24,6 +24,9 @@
   "contributors": [
     "Titus Wormer <tituswormer@gmail.com> (https://wooorm.com)"
   ],
+  "sideEffects": false,
+  "type": "module",
+  "main": "index.js",
   "files": [
     "index.js"
   ],
@@ -32,13 +35,12 @@
     "hast-util-is-element": "^1.0.0",
     "hast-util-phrasing": "^1.0.0",
     "hast-util-whitespace": "^1.0.0",
-    "html-whitespace-sensitive-tag-names": "^1.0.0",
+    "html-whitespace-sensitive-tag-names": "^2.0.0",
     "rehype-minify-whitespace": "^4.0.0",
     "repeat-string": "^1.0.0",
     "unist-util-visit-parents": "^3.0.0"
   },
   "devDependencies": {
-    "bail": "^1.0.0",
     "c8": "^7.0.0",
     "is-hidden": "^1.0.0",
     "negate": "^1.0.0",
@@ -48,12 +50,12 @@
     "remark-preset-wooorm": "^8.0.0",
     "tape": "^5.0.0",
     "to-vfile": "^6.0.0",
-    "xo": "^0.36.0"
+    "xo": "^0.38.0"
   },
   "scripts": {
     "format": "remark . -qfo && prettier . -w --loglevel warn && xo --fix",
-    "test-api": "node --conditions development test.js",
-    "test-coverage": "c8 --check-coverage --branches 100 --functions 100 --lines 100 --statements 100 --reporter lcov node --conditions development test.js",
+    "test-api": "node --conditions development test/index.js",
+    "test-coverage": "c8 --check-coverage --branches 100 --functions 100 --lines 100 --statements 100 --reporter lcov node --conditions development test/index.js",
     "test": "npm run format && npm run test-coverage"
   },
   "prettier": {
@@ -66,8 +68,9 @@
   },
   "xo": {
     "prettier": true,
-    "esnext": false,
     "rules": {
+      "no-var": "off",
+      "prefer-arrow-callback": "off",
       "unicorn/explicit-length-check": "off",
       "unicorn/no-fn-reference-in-iterator": "off",
       "unicorn/prefer-includes": "off",

test/index.js

@@ -1,25 +1,23 @@
-'use strict'
-
-var fs = require('fs')
-var path = require('path')
-var bail = require('bail')
-var test = require('tape')
-var rehype = require('rehype')
-var vfile = require('to-vfile')
-var negate = require('negate')
-var hidden = require('is-hidden')
-var fmt = require('..')
+import fs from 'fs'
+import path from 'path'
+import test from 'tape'
+import rehype from 'rehype'
+import vfile from 'to-vfile'
+import negate from 'negate'
+import hidden from 'is-hidden'
+import fmt from '../index.js'
 
 test('format', function (t) {
-  var root = path.join(__dirname, 'fixtures')
+  var root = path.join('test', 'fixtures')
 
-  fs.readdir(root, function (err, files) {
-    bail(err)
-    files = files.filter(negate(hidden))
-    t.plan(files.length)
+  const files = fs.readdirSync(root).filter(negate(hidden))
 
-    files.forEach(one)
-  })
+  t.plan(files.length)
+
+  let index = -1
+  while (++index < files.length) {
+    one(files[index])
+  }
 
   function one(fixture) {
     var base = path.join(root, fixture)
@@ -34,10 +32,10 @@ test('format', function (t) {
 
     proc = rehype().use(fmt, config)
 
-    proc.process(input, function (err) {
+    proc.process(input, function (error) {
       t.test(fixture, function (t) {
         t.plan(3)
-        t.ifErr(err, 'shouldn’t throw')
+        t.ifErr(error, 'shouldn’t throw')
         t.equal(input.messages.length, 0, 'shouldn’t warn')
         t.equal(String(input), String(output), 'should match')
       })