docs: add examples for internalIP and internalIPSync

examples/api/internal-ip-sync/README.md

@@ -0,0 +1,23 @@
+# internalIPSync(family: "v4" | "v6")
+
+Returns the internal IP address synchronously.
+
+```js
+const WebpackDevServer = require("webpack-dev-server");
+
+const localIPv4 = WebpackDevServer.internalIPSync("v4");
+const localIPv6 = WebpackDevServer.internalIPSync("v6");
+
+console.log("Local IPv4 address:", localIPv4);
+console.log("Local IPv6 address:", localIPv6);
+```
+
+Use the following command to run this example:
+
+```console
+node app.js
+```
+
+## What Should Happen
+
+- The script should log your local IPv4 and IPv6 address.

examples/api/internal-ip-sync/app.js

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+"use strict";
+
+const WebpackDevServer = require("../../../lib/Server");
+
+const localIPv4 = WebpackDevServer.internalIPSync("v4");
+const localIPv6 = WebpackDevServer.internalIPSync("v6");
+
+console.log("Local IPv4 address:", localIPv4);
+console.log("Local IPv6 address:", localIPv6);

examples/api/internal-ip/README.md

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+# internalIP(family: "v4" | "v6")
+
+Returns the internal IP address asynchronously.
+
+```js
+const WebpackDevServer = require("webpack-dev-server");
+
+const logInternalIPs = async () => {
+  const localIPv4 = await WebpackDevServer.internalIP("v4");
+  const localIPv6 = await WebpackDevServer.internalIP("v6");
+
+  console.log("Local IPv4 address:", localIPv4);
+  console.log("Local IPv6 address:", localIPv6);
+};
+
+logInternalIPs();
+```
+
+Use the following command to run this example:
+
+```console
+node app.js
+```
+
+## What Should Happen
+
+- The script should log your local IPv4 and IPv6 address.

examples/api/internal-ip/app.js

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+"use strict";
+
+const WebpackDevServer = require("../../../lib/Server");
+
+const logInternalIPs = async () => {
+  const localIPv4 = await WebpackDevServer.internalIP("v4");
+  const localIPv6 = await WebpackDevServer.internalIP("v6");
+
+  console.log("Local IPv4 address:", localIPv4);
+  console.log("Local IPv6 address:", localIPv6);
+};
+
+logInternalIPs();