feat: migrate to esm

Author: twoeths

README.md

@@ -20,7 +20,7 @@ or
 ### Usage
 
 ```js
-const is_ip_private = require('private-ip')
+import is_ip_private from 'private-ip'
 
 is_ip_private('10.0.0.0')
 // => true

index.js

@@ -1,3 +1,4 @@
 'use strict'
 
-module.exports = require('./lib').default
+import is_ip_private from './lib/index.js'
+export default is_ip_private

package.json

@@ -2,7 +2,8 @@
   "name": "private-ip",
   "version": "2.3.4",
   "description": "Check if IP address is private.",
-  "main": "index.js",
+  "exports": "./index.js",
+  "type": "module",
   "types": "lib/index.d.ts",
   "repository": {
     "type": "git",
@@ -54,5 +55,8 @@
     "ipaddr.js": "^2.0.1",
     "@chainsafe/is-ip": "^2.0.1",
     "netmask": "^2.0.2"
+  },
+  "engines": {
+    "node": ">=14.16"
   }
 }

src/index.ts

@@ -1,7 +1,8 @@
 import { Netmask } from 'netmask'
 import ip_regex from 'ip-regex'
 import { isIP } from '@chainsafe/is-ip'
-import { isValid as is_valid, parse, IPv4 } from 'ipaddr.js'
+import ipaddr, { IPv4 } from 'ipaddr.js'
+const { isValid: is_valid, parse } = ipaddr
 
 const PRIVATE_IP_RANGES = [
   '0.0.0.0/8',

test.js

@@ -1,5 +1,5 @@
-const test = require('ava')
-const is_ip_private = require('./')
+import test from 'ava'
+import is_ip_private from './index.js'
 
 const pub_ips = [
   '44.37.112.180',

tsconfig.json

@@ -1,7 +1,8 @@
 {
   "compilerOptions": {
-    "target": "es6",
-    "module": "commonjs",
+    "target": "ES2020",
+    "module": "ES2020",
+    "moduleResolution": "node",
     "esModuleInterop": true,
     "declaration": true
   }