Merge pull request #37 from ThaUnknown/esm

BREAKING CHANGE: ESM only

feat: esm

Author: ThaUnknown

README.md

@@ -30,7 +30,7 @@ Given one of the following:
 this module loads the ip set (downloading from the network, if necessary) and returns an [ip-set](https://www.npmjs.org/package/ip-set) object. An `ip-set` is just a mutable set data structure optimized for use with IPv4 and IPv6 addresses.
 
 ```js
-const loadIPSet = require('load-ip-set')
+import loadIPSet from 'load-ip-set'
 loadIPSet('http://example.com/list.txt', (err, ipSet) => {
   if (err) throw err
   ipSet.contains('1.2.3.4') //=> true

index.js

@@ -1,11 +1,11 @@
 /*! load-ip-set. MIT License. WebTorrent LLC <https://webtorrent.io/opensource> */
-const fs = require('fs')
-const get = require('simple-get')
-const IPSet = require('ip-set')
-const Netmask = require('netmask').Netmask
-const once = require('once')
-const split = require('split')
-const zlib = require('zlib')
+import fs from 'fs'
+import get from 'simple-get'
+import IPSet from 'ip-set'
+import { Netmask } from 'netmask'
+import once from 'once'
+import split from 'split'
+import zlib from 'zlib'
 
 // Match single IPs and IP ranges (IPv4 and IPv6), with or without a description
 const ipSetRegex = /^\s*(?:[^#].*?\s*:\s*)?([a-f0-9.:]+)(?:\s*-\s*([a-f0-9.:]+))?\s*$/
@@ -56,4 +56,4 @@ function loadIPSet (input, opts, cb) {
   }
 }
 
-module.exports = loadIPSet
+export default loadIPSet

package.json

@@ -13,6 +13,7 @@
   "bugs": {
     "url": "https://github.com/webtorrent/load-ip-set/issues"
   },
+  "type": "module",
   "dependencies": {
     "ip-set": "^2.1.0",
     "netmask": "^2.0.1",
@@ -37,7 +38,12 @@
     "webtorrent"
   ],
   "license": "MIT",
-  "main": "index.js",
+  "engines": {
+    "node": ">=12.20.0"
+  },
+  "exports": {
+    "import": "./index.js"
+  },
   "repository": {
     "type": "git",
     "url": "git://github.com/webtorrent/load-ip-set.git"

test/basic.js

@@ -1,9 +1,13 @@
-const fs = require('fs')
-const http = require('http')
-const loadIPSet = require('../')
-const path = require('path')
-const test = require('tape')
-const zlib = require('zlib')
+import fs from 'fs'
+import http from 'http'
+import loadIPSet from '../index.js'
+import path, { dirname } from 'path'
+import test from 'tape'
+import zlib from 'zlib'
+import { fileURLToPath } from 'url'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = dirname(__filename)
 
 test('array of IPs', t => {
   t.plan(5)