Require Node.js 16 (#47)

.github/workflows/main.yml

@@ -4,16 +4,21 @@ on:
   - pull_request
 jobs:
   test:
-    name: Node.js ${{ matrix.node-version }}
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
+        os:
+          - ubuntu-20.04
+          - ubuntu-22.04
+          - macOS-latest
+          - windows-latest
         node-version:
+          - 18
           - 16
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm install

browser.js

@@ -1,6 +1,6 @@
 /* eslint-env browser */
 import pEvent from 'p-event';
-import isIp from 'is-ip';
+import {isIPv4, isIPv6} from 'is-ip';
 
 const getIp = async ({isSecondTry = false} = {}) => {
 	try {
@@ -51,14 +51,14 @@ const getIp = async ({isSecondTry = false} = {}) => {
 
 export async function internalIpV6() {
 	const result = await getIp();
-	if (isIp.v6(result)) {
+	if (isIPv6(result)) {
 		return result;
 	}
 }
 
 export async function internalIpV4() {
 	const result = await getIp();
-	if (isIp.v4(result)) {
+	if (isIPv4(result)) {
 		return result;
 	}
 }

index.js

@@ -1,49 +1,38 @@
 import {networkInterfaces} from 'node:os';
-import defaultGateway from 'default-gateway';
-import ip from 'ipaddr.js';
+import {gateway4async, gateway4sync, gateway6async, gateway6sync} from 'default-gateway';
+import {contains, normalize} from 'cidr-tools';
 
-function findIp(gateway) {
-	const gatewayIp = ip.parse(gateway);
-
-	// Look for the matching interface in all local interfaces.
+function findIp({gateway}) {
+	// Look for the matching interface in all local interfaces
 	for (const addresses of Object.values(networkInterfaces())) {
 		for (const {cidr} of addresses) {
-			const net = ip.parseCIDR(cidr);
-
-			// eslint-disable-next-line unicorn/prefer-regexp-test
-			if (net[0] && net[0].kind() === gatewayIp.kind() && gatewayIp.match(net)) {
-				return net[0].toString();
+			if (contains(cidr, gateway)) {
+				return normalize(cidr).split('/')[0];
 			}
 		}
 	}
 }
 
-async function async(family) {
+export async function internalIpV6() {
 	try {
-		const {gateway} = await defaultGateway[family]();
-		return findIp(gateway);
+		return findIp((await gateway6async()));
 	} catch {}
 }
 
-function sync(family) {
+export async function internalIpV4() {
 	try {
-		const {gateway} = defaultGateway[family].sync();
-		return findIp(gateway);
+		return findIp((await gateway4async()));
 	} catch {}
 }
 
-export async function internalIpV6() {
-	return async('v6');
-}
-
-export async function internalIpV4() {
-	return async('v4');
-}
-
 export function internalIpV6Sync() {
-	return sync('v6');
+	try {
+		return findIp(gateway6sync());
+	} catch {}
 }
 
 export function internalIpV4Sync() {
-	return sync('v4');
+	try {
+		return findIp(gateway4sync());
+	} catch {}
 }

package.json

@@ -11,12 +11,13 @@
 		"url": "https://sindresorhus.com"
 	},
 	"type": "module",
+	"sideEffects": false,
 	"exports": {
 		"node": "./index.js",
 		"default": "./browser.js"
 	},
 	"engines": {
-		"node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+		"node": ">=16"
 	},
 	"scripts": {
 		"test": "xo && ava && tsd"
@@ -40,9 +41,9 @@
 		"gateway"
 	],
 	"dependencies": {
-		"default-gateway": "^6.0.3",
-		"ipaddr.js": "^2.0.1",
-		"is-ip": "^3.1.0",
+		"cidr-tools": "^6.4.1",
+		"default-gateway": "^7.2.2",
+		"is-ip": "^5.0.0",
 		"p-event": "^4.2.0"
 	},
 	"devDependencies": {

test.js

@@ -1,34 +1,32 @@
 import {isIPv4, isIPv6} from 'node:net';
-import process from 'node:process';
+import {env} from 'node:process';
+import {platform} from 'node:os';
 import test from 'ava';
 import {internalIpV6, internalIpV4, internalIpV6Sync, internalIpV4Sync} from './index.js';
 
-const isCI = Boolean(process.env.CI);
+// Only Darwin has IPv6 on GitHub Actions
+const canTestV6 = env.CI ? platform() === 'darwin' : true;
 
 test('IPv6 - async', async t => {
-	const ip = await internalIpV6();
-	if (isCI) {
-		t.is(ip, undefined);
+	if (canTestV6) {
+		t.true(isIPv6(await internalIpV6()));
 	} else {
-		t.true(isIPv6(ip));
+		t.is(await internalIpV6(), undefined);
 	}
 });
 
 test('IPv4 - async', async t => {
-	const ip = await internalIpV4();
-	t.true(isIPv4(ip));
+	t.true(isIPv4(await internalIpV4()));
 });
 
 test('IPv6 - sync', t => {
-	const ip = internalIpV6Sync();
-	if (isCI) {
-		t.is(ip, undefined);
+	if (canTestV6) {
+		t.true(isIPv6(internalIpV6Sync()));
 	} else {
-		t.true(isIPv6(ip));
+		t.is(internalIpV6Sync(), undefined);
 	}
 });
 
 test('IPv4 - sync', t => {
-	const ip = internalIpV4Sync();
-	t.true(isIPv4(ip));
+	t.true(isIPv4(internalIpV4Sync()));
 });