feat: support clearLockedPorts

index.d.ts

@@ -60,3 +60,8 @@ console.log(await getPort({port: portNumbers(3000, 3100)}));
 ```
 */
 export function portNumbers(from: number, to: number): Iterable<number>;
+
+/**
+Clear the internal cache of locked ports.
+ */
+export function clearLockedPorts(): void;

index.js

@@ -178,3 +178,8 @@ export function portNumbers(from, to) {
 
 	return generator(from, to);
 }
+
+export function clearLockedPorts() {
+	lockedPorts.old.clear();
+	lockedPorts.young.clear();
+}

test.js

@@ -1,7 +1,7 @@
 import {promisify} from 'node:util';
 import net from 'node:net';
 import test from 'ava';
-import getPort, {portNumbers} from './index.js';
+import getPort, {portNumbers, clearLockedPorts} from './index.js';
 
 test('port can be bound when promise resolves', async t => {
 	const port = await getPort();
@@ -193,3 +193,18 @@ test('preferred ports is bound up with different hosts', async t => {
 
 	t.is(port, desiredPorts[3]);
 });
+
+test('clear locked ports by lockedPorts', async t => {
+	const desiredPort = 8088;
+	const port1 = await getPort({port: desiredPort});
+	t.is(port1, desiredPort);
+
+	const port2 = await getPort({port: desiredPort});
+	// Port1 is locked
+	t.not(port2, desiredPort);
+
+	// Clear locked ports
+	clearLockedPorts();
+	const port3 = await getPort({port: desiredPort});
+	t.is(port3, desiredPort);
+});